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Benoît Debord
GPPMM Group, Xlim Research Institute, CNRS UMR 7252, University of Limoges, France

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Journal article
Published: 18 September 2019 in Photonics Research
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Historically, nonlinear optical phenomena such as spectral broadening by harmonic generation have been associated with crystals owing to their strong nonlinear refractive indices, which are in the range of ∼10−14 cm2/W. This association was also the result of the limited optical power available from early lasers and the limited interaction length that the laser–crystal interaction architecture could offer. Consequently, these limitations disqualified a large number of materials whose nonlinear coefficient is lower than n2∼10−16 cm2/W as suitable materials for nonlinear optics applications. For example, it is a common practice in most of optical laboratories to consider ambient or atmospheric air as a “nonlinear optically” inert medium due to its very low nonlinear coefficient (∼10.10−19 cm2/W) and low density. Today, the wide spread of high-power ultra-short pulse lasers on one hand, and low transmission loss and high-power handling of Kagome hollow-core photonic crystal fiber on the other hand, provide the necessary ingredients to excite strong nonlinear optical effects in practically any gas media, regardless of how low its optical nonlinear response is. By using a single table-top 1 mJ ultra-short pulse laser and an air exposed inhibited-coupling guiding hollow-core photonic crystal fiber, we observed generation of supercontinuum and third harmonic generation when the laser pulse duration was set at 600 fs and Raman comb generation when the duration was 300 ps. The supercontinuum spectrum spans over ∼1000 THz and exhibits a typical spectral-density energy of 150 nJ/nm. The dispersion profile of inhibited-coupling hollow-core fiber imprints a distinctive sequence in the supercontinuum generation, which is triggered by the generation of a cascade of four-wave mixing lines and concluded by solitonic dynamics. The Raman comb spans over 300 THz and exhibits multiple sidebands originating from N2 vibrational and ro-vibrational Raman transitions. With the growing use of hollow-core photonic crystal fiber in different fields, the results can be applied to mitigate air nonlinear response when it is not desired or to use ambient air as a convenient nonlinear medium.

ACS Style

Benoit Debord; Martin Maurel; Frederic Gerome; Luca Vincetti; Anton Husakou; Fetah Benabid. Strong nonlinear optical effects in micro-confined atmospheric air. Photonics Research 2019, 7, 1134 -1141.

AMA Style

Benoit Debord, Martin Maurel, Frederic Gerome, Luca Vincetti, Anton Husakou, Fetah Benabid. Strong nonlinear optical effects in micro-confined atmospheric air. Photonics Research. 2019; 7 (10):1134-1141.

Chicago/Turabian Style

Benoit Debord; Martin Maurel; Frederic Gerome; Luca Vincetti; Anton Husakou; Fetah Benabid. 2019. "Strong nonlinear optical effects in micro-confined atmospheric air." Photonics Research 7, no. 10: 1134-1141.

Review
Published: 18 February 2019 in Fibers
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Since their inception, about 20 years ago, hollow-core photonic crystal fiber and its gas-filled form are now establishing themselves both as a platform in advancing our knowledge on how light is confined and guided in microstructured dielectric optical waveguides, and a remarkable enabler in a large and diverse range of fields. The latter spans from nonlinear and coherent optics, atom optics and laser metrology, quantum information to high optical field physics and plasma physics. Here, we give a historical account of the major seminal works, we review the physics principles underlying the different optical guidance mechanisms that have emerged and how they have been used as design tools to set the current state-of-the-art in the transmission performance of such fibers. In a second part of this review, we give a nonexhaustive, yet representative, list of the different applications where gas-filled hollow-core photonic crystal fiber played a transformative role, and how the achieved results are leading to the emergence of a new field, which could be coined “Gas photonics”. We particularly stress on the synergetic interplay between glass, gas, and light in founding this new fiber science and technology.

ACS Style

Benoît Debord; Foued Amrani; Luca Vincetti; Frédéric Gérôme; Fetah Benabid. Hollow-Core Fiber Technology: The Rising of “Gas Photonics”. Fibers 2019, 7, 16 .

AMA Style

Benoît Debord, Foued Amrani, Luca Vincetti, Frédéric Gérôme, Fetah Benabid. Hollow-Core Fiber Technology: The Rising of “Gas Photonics”. Fibers. 2019; 7 (2):16.

Chicago/Turabian Style

Benoît Debord; Foued Amrani; Luca Vincetti; Frédéric Gérôme; Fetah Benabid. 2019. "Hollow-Core Fiber Technology: The Rising of “Gas Photonics”." Fibers 7, no. 2: 16.

Journal article
Published: 11 January 2019 in Optics Letters
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Emission at 4.6 μm was observed from an N2O filled hollow core fiber laser. 8-ns pump pulses at 1.517 μm excited a vibrational overtone resulting in lasing on an R and P branch fundamental transition from the upper pump state. At optimum gas pressure of 80 Torr, photon conversion efficiency of 9% and slope efficiency of 3% were observed from a mirrorless laser. The laser threshold occurred at absorbed pump energy of 150 nJ in a 45-cm long fiber with 85 μm core diameter. The observed dependence of the laser output on gas pressure was shown to be a result of line broadening and relaxation rates.

ACS Style

F. B. A. Aghbolagh; V. Nampoothiri; B. Debord; F. Gerome; Luca Vincetti; F. Benabid; W. Rudolph. Mid IR hollow core fiber gas laser emitting at 46 μm. Optics Letters 2019, 44, 383 -386.

AMA Style

F. B. A. Aghbolagh, V. Nampoothiri, B. Debord, F. Gerome, Luca Vincetti, F. Benabid, W. Rudolph. Mid IR hollow core fiber gas laser emitting at 46 μm. Optics Letters. 2019; 44 (2):383-386.

Chicago/Turabian Style

F. B. A. Aghbolagh; V. Nampoothiri; B. Debord; F. Gerome; Luca Vincetti; F. Benabid; W. Rudolph. 2019. "Mid IR hollow core fiber gas laser emitting at 46 μm." Optics Letters 44, no. 2: 383-386.

Preprint
Published: 03 November 2018
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Emission at 4.6 um was observed from an N2O filled hollow core fiber laser. 8-ns pump pulses at 1.517 um excited a vibrational overtone resulting in lasing on an R and P branch fundamental transition from the upper pump state. At optimum gas pressure of 80 Torr a photon conversion efficiency of 9% and a slope efficiency of 3% was observed from a mirrorless laser. The laser threshold occurred at an absorbed pump energy of 150 nJ in a 45-cm long fiber with 85 {\mu}m core diameter. The observed dependence of the laser output on gas pressure is shown to be a result of line broadening and relaxation rates.

ACS Style

F. B. A. Aghbolagh; V. Nampoothiri; B. Debord; F. Gerome; L. Vincetti; F. Benabid; W. Rudolph. Mid IR hollow core fiber gas laser emitting at 4.6 um. 2018, 1 .

AMA Style

F. B. A. Aghbolagh, V. Nampoothiri, B. Debord, F. Gerome, L. Vincetti, F. Benabid, W. Rudolph. Mid IR hollow core fiber gas laser emitting at 4.6 um. . 2018; ():1.

Chicago/Turabian Style

F. B. A. Aghbolagh; V. Nampoothiri; B. Debord; F. Gerome; L. Vincetti; F. Benabid; W. Rudolph. 2018. "Mid IR hollow core fiber gas laser emitting at 4.6 um." , no. : 1.

Conference paper
Published: 01 January 2018 in Conference on Lasers and Electro-Optics
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We experimentally show how multiband dispersion properties of inhibited-coupling hollow-core fibers allow to control the spectral correlations of photon pairs generated through four-wave-mixing in a fiber filled with non-linear gas.

ACS Style

M. Cordier; A. Orieux; B. Debord; F. Gerome; A. Gorse; M. Chafer; E. Diamanti; P. Delaye; F. Benabid; I. Zaquine. Shaping photon-pairs time-frequency correlations in inhibited-coupling hollow-core fibers. Conference on Lasers and Electro-Optics 2018, FM4G.4 .

AMA Style

M. Cordier, A. Orieux, B. Debord, F. Gerome, A. Gorse, M. Chafer, E. Diamanti, P. Delaye, F. Benabid, I. Zaquine. Shaping photon-pairs time-frequency correlations in inhibited-coupling hollow-core fibers. Conference on Lasers and Electro-Optics. 2018; ():FM4G.4.

Chicago/Turabian Style

M. Cordier; A. Orieux; B. Debord; F. Gerome; A. Gorse; M. Chafer; E. Diamanti; P. Delaye; F. Benabid; I. Zaquine. 2018. "Shaping photon-pairs time-frequency correlations in inhibited-coupling hollow-core fibers." Conference on Lasers and Electro-Optics , no. : FM4G.4.

Conference paper
Published: 01 January 2018 in Conference on Lasers and Electro-Optics
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We report on mode transformation in an asymmetric tubular hollow fiber. We theoretically and experimentally show that LP01 and LP11 modes superposition entails an output profile with unusual spatially-separated orthogonal polarization sites.

ACS Style

J. H. Osorio; M. Chafer; B. Debord; F. Giovanardi; M. Cordier; F. Delahaye; L. Vincetti; F. Gerome; F. Benabid. Mode transformation in an inhibited-coupling guiding asymmetric tubular hollow fiber. Conference on Lasers and Electro-Optics 2018, SF1K.6 .

AMA Style

J. H. Osorio, M. Chafer, B. Debord, F. Giovanardi, M. Cordier, F. Delahaye, L. Vincetti, F. Gerome, F. Benabid. Mode transformation in an inhibited-coupling guiding asymmetric tubular hollow fiber. Conference on Lasers and Electro-Optics. 2018; ():SF1K.6.

Chicago/Turabian Style

J. H. Osorio; M. Chafer; B. Debord; F. Giovanardi; M. Cordier; F. Delahaye; L. Vincetti; F. Gerome; F. Benabid. 2018. "Mode transformation in an inhibited-coupling guiding asymmetric tubular hollow fiber." Conference on Lasers and Electro-Optics , no. : SF1K.6.

Conference paper
Published: 01 January 2018 in Conference on Lasers and Electro-Optics
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We report on a new in-situ technique to measure dwell-time of Rb at coated surfaces of the inner-wall core of Kagome HC-PCFs. Surfaces made with silica, Alumino-silicate, PDMS and OTS were measured using this technique.

ACS Style

X. M. Zheng; J. Jouin; M. Delgrange; C. Restoin; B. Debord; P. Thomas; F. Gerome; F. Benabid. In-situ dwell-time measurement of Rb at the inner-wall coated-surface of HC-PCF. Conference on Lasers and Electro-Optics 2018, SM3L.4 .

AMA Style

X. M. Zheng, J. Jouin, M. Delgrange, C. Restoin, B. Debord, P. Thomas, F. Gerome, F. Benabid. In-situ dwell-time measurement of Rb at the inner-wall coated-surface of HC-PCF. Conference on Lasers and Electro-Optics. 2018; ():SM3L.4.

Chicago/Turabian Style

X. M. Zheng; J. Jouin; M. Delgrange; C. Restoin; B. Debord; P. Thomas; F. Gerome; F. Benabid. 2018. "In-situ dwell-time measurement of Rb at the inner-wall coated-surface of HC-PCF." Conference on Lasers and Electro-Optics , no. : SM3L.4.

Conference paper
Published: 01 January 2018 in Conference on Lasers and Electro-Optics
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We compare electromagnetically induced transparencies in large-core anti-relaxation materials inner-wall coatings Kagome HC-PCF with thermal Rb confinement in situ. A minimum transparency linewidth of ~150 KHz in OTS coated fiber was observed.

ACS Style

X. M. Zheng; M. Delgrange; J. Jouin; P. Thomas; B. Debord; F. Gerome; F. Benabid. Narrow electromagnetically induced transparencies in Rb confined large-core core inner-wall coated Kagome HC-PCFs. Conference on Lasers and Electro-Optics 2018, SM3L.3 .

AMA Style

X. M. Zheng, M. Delgrange, J. Jouin, P. Thomas, B. Debord, F. Gerome, F. Benabid. Narrow electromagnetically induced transparencies in Rb confined large-core core inner-wall coated Kagome HC-PCFs. Conference on Lasers and Electro-Optics. 2018; ():SM3L.3.

Chicago/Turabian Style

X. M. Zheng; M. Delgrange; J. Jouin; P. Thomas; B. Debord; F. Gerome; F. Benabid. 2018. "Narrow electromagnetically induced transparencies in Rb confined large-core core inner-wall coated Kagome HC-PCFs." Conference on Lasers and Electro-Optics , no. : SM3L.3.

Conference paper
Published: 01 January 2018 in Conference on Lasers and Electro-Optics
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We report on the design and fabrication of the first double-clad hypocycloid core-contour Kagome fiber optimized for guidance in air-core at 1µm via Inhibited-Coupling and in a cladding silica ring via total-internal-reflection.

ACS Style

F. Delahaye; M. Maurel; M. Chafer; F. Amrani; B. Debord; F. Gérôme; F. Benabid. Double-clad hypocycloid core-contour Kagome hollow-core photonic crystal fiber. Conference on Lasers and Electro-Optics 2018, JTh2A.97 .

AMA Style

F. Delahaye, M. Maurel, M. Chafer, F. Amrani, B. Debord, F. Gérôme, F. Benabid. Double-clad hypocycloid core-contour Kagome hollow-core photonic crystal fiber. Conference on Lasers and Electro-Optics. 2018; ():JTh2A.97.

Chicago/Turabian Style

F. Delahaye; M. Maurel; M. Chafer; F. Amrani; B. Debord; F. Gérôme; F. Benabid. 2018. "Double-clad hypocycloid core-contour Kagome hollow-core photonic crystal fiber." Conference on Lasers and Electro-Optics , no. : JTh2A.97.

Conference paper
Published: 01 January 2018 in Conference on Lasers and Electro-Optics
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We report losses at the Rayleigh scattering limit of silica at 539 nm in a tubular HC-PCF with value of 13.8 dB/km. The fiber was drawn over 1 km with ± 0.6% fluctuation.

ACS Style

M. Chafer; F. Delahaye; F. Amrani; B. Debord; F. Gérôme; F. Benabid. 1 km long HC-PCF with losses at the fundamental Rayleigh scattering limit in the green wavelength range. Conference on Lasers and Electro-Optics 2018, SF1K.3 .

AMA Style

M. Chafer, F. Delahaye, F. Amrani, B. Debord, F. Gérôme, F. Benabid. 1 km long HC-PCF with losses at the fundamental Rayleigh scattering limit in the green wavelength range. Conference on Lasers and Electro-Optics. 2018; ():SF1K.3.

Chicago/Turabian Style

M. Chafer; F. Delahaye; F. Amrani; B. Debord; F. Gérôme; F. Benabid. 2018. "1 km long HC-PCF with losses at the fundamental Rayleigh scattering limit in the green wavelength range." Conference on Lasers and Electro-Optics , no. : SF1K.3.

Proceedings article
Published: 20 February 2017 in Nonlinear Frequency Generation and Conversion: Materials and Devices XVI
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Raman-gas filled HC-PCF has proved to be an outstanding Raman-convertor, as illustrated by the generation of more than 5 octaves wide Raman comb using a hydrogen-filled Kagome HC-PCF pumped with high power picosecond-laser, or the generation of multiline Raman-source in the UV-Vis using a very compact system pumped with micro-chip laser. Whilst these demonstrations are promising, a principal challenge for the industrialization of such a Raman source is its lifetime as the H2 diffusion through silica is high enough to leak out from the fiber within only a few months. Here, we report on a HC-PCF based Raman multiline source with a very long life-span. The system consists of hydrogen filled ultra-low loss HC-PCF contained in highly sealed box, coined CombBox, and pumped with a 532 nm micro-chip laser. This combination is a turnkey multiline Raman-source with a "shoe box" size. The CombBox is a robust and compact component that can be integrated and pumped with any common pulsed laser. When pumped with a 32 mW average power and 1 ns frequency-doubled Nd:Yag microchip laser, this Raman-source generates 24 lines spanning from 355 to 745 nm, and a peak power density per line of 260 mW/nm for the strongest lines. Both the output power and the spectrum remained constant over its monitoring duration of more than six months. The spectrum of this multiline laser superimposes with no less than 17 absorption peaks of fluorescent dyes from the Alexa Fluor family used as biological markers. © (2017) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.

ACS Style

M. Chafer; Q. Lekiefs; A. Gorse; B. Beaudou; B. Debord; F. Gérôme; F. Benabid; Q. Lequiefs. Compact, integrable, and long life time Raman multiline UV-Vis source based on hypocycloid core Kagome HC-PCF. Nonlinear Frequency Generation and Conversion: Materials and Devices XVI 2017, 10088, 1008805 .

AMA Style

M. Chafer, Q. Lekiefs, A. Gorse, B. Beaudou, B. Debord, F. Gérôme, F. Benabid, Q. Lequiefs. Compact, integrable, and long life time Raman multiline UV-Vis source based on hypocycloid core Kagome HC-PCF. Nonlinear Frequency Generation and Conversion: Materials and Devices XVI. 2017; 10088 ():1008805.

Chicago/Turabian Style

M. Chafer; Q. Lekiefs; A. Gorse; B. Beaudou; B. Debord; F. Gérôme; F. Benabid; Q. Lequiefs. 2017. "Compact, integrable, and long life time Raman multiline UV-Vis source based on hypocycloid core Kagome HC-PCF." Nonlinear Frequency Generation and Conversion: Materials and Devices XVI 10088, no. : 1008805.

Conference paper
Published: 20 February 2017 in Nonlinear Frequency Generation and Conversion: Materials and Devices XVI
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ACS Style

Aurélien Benoît; B. Beaudou; B. Debord; F. Gerome; F. Benabid. High power Raman-converter based on H2-filled inhibited coupling HC-PCF. Nonlinear Frequency Generation and Conversion: Materials and Devices XVI 2017, 100880H -100880H-5.

AMA Style

Aurélien Benoît, B. Beaudou, B. Debord, F. Gerome, F. Benabid. High power Raman-converter based on H2-filled inhibited coupling HC-PCF. Nonlinear Frequency Generation and Conversion: Materials and Devices XVI. 2017; ():100880H-100880H-5.

Chicago/Turabian Style

Aurélien Benoît; B. Beaudou; B. Debord; F. Gerome; F. Benabid. 2017. "High power Raman-converter based on H2-filled inhibited coupling HC-PCF." Nonlinear Frequency Generation and Conversion: Materials and Devices XVI , no. : 100880H-100880H-5.

Proceedings article
Published: 17 February 2017 in Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XVII
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We report on a Hollow Core-Photonic Crystal Fiber (HC-PCF) based high power ultra-short pulse laser beam delivery system (GLO-BDS) that combines ease-of-use, high laser-coupling efficiency, robustness and industrial compatible cabling. The GLO-BDS comprises a pre-aligned laser-injection head, a sheath cable protected HC-PCF and a modular fiber-output head. It enables fiber-core gas loading and evacuation in a hermetic fashion. 5 m long GLO-BDS were demonstrated for Yb USP laser, Ti:Sapphire laser and frequency-doubled Yb USP laser. They all exhibit a transmission coefficient larger than 80%, and a laser output profile close to single mode (M2 <1.3). © (2017) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.

ACS Style

M. Maurel; A. Gorse; B. Beaudou; Q. Lekiefs; M. Chafer; B. Debord; F. Gérôme; F. Benabid. Kagome fiber based industrial laser beam delivery. Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XVII 2017, 10094, 100941 .

AMA Style

M. Maurel, A. Gorse, B. Beaudou, Q. Lekiefs, M. Chafer, B. Debord, F. Gérôme, F. Benabid. Kagome fiber based industrial laser beam delivery. Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XVII. 2017; 10094 ():100941.

Chicago/Turabian Style

M. Maurel; A. Gorse; B. Beaudou; Q. Lekiefs; M. Chafer; B. Debord; F. Gérôme; F. Benabid. 2017. "Kagome fiber based industrial laser beam delivery." Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XVII 10094, no. : 100941.

Conference paper
Published: 17 February 2017 in Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XVII
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The dramatic progress in power-scaling of ultra-short pulse (USP) lasers and their growing use in industrial applications call for flexible and robust beam delivery systems (BDS) over several meters with no temporal or modal distortions. Inhibited coupling (IC) hypocycloid Kagome hollow-core photonic crystal fiber (HC-PCF) has recently proved to be an excellent solution for guiding these USP. In order to reduce further the attenuation of such fiber and then to increase the BDS capabilities, we report on an optimized IC Kagome HC-PCF exhibiting record loss level (8.5dB/km at 1030nm) associated with a 225nm wide 3-dB bandwidth and low bend sensitivity

ACS Style

B. Debord; M. Maurel; A. Amsanpally; M. Adnan; B. Beaudou; J. M. Blondy; L. Vincetti; F. Gérôme; F. Benabid. Ultra-low loss (8.5 dB/km @ Yb-laser wavelength range) inhibited-coupling Kagome HC-PCF for laser beam delivery applications. Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XVII 2017, 100941M -100941M-5.

AMA Style

B. Debord, M. Maurel, A. Amsanpally, M. Adnan, B. Beaudou, J. M. Blondy, L. Vincetti, F. Gérôme, F. Benabid. Ultra-low loss (8.5 dB/km @ Yb-laser wavelength range) inhibited-coupling Kagome HC-PCF for laser beam delivery applications. Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XVII. 2017; ():100941M-100941M-5.

Chicago/Turabian Style

B. Debord; M. Maurel; A. Amsanpally; M. Adnan; B. Beaudou; J. M. Blondy; L. Vincetti; F. Gérôme; F. Benabid. 2017. "Ultra-low loss (8.5 dB/km @ Yb-laser wavelength range) inhibited-coupling Kagome HC-PCF for laser beam delivery applications." Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XVII , no. : 100941M-100941M-5.

Journal article
Published: 08 February 2017 in Optica
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Attenuation in photonic bandgap guiding hollow-core photonic crystal fiber (HC-PCF) has not beaten the fundamental silica Rayleigh scattering limit (SRSL) of conventional step-index fibers due to strong core-cladding optical overlap, surface roughness at the silica cladding struts, and the presence of interface modes. Hope has been revived recently by the introduction of hypocycloid core contour (i.e., negative curvature) in inhibited-coupling guiding HC-PCF. We report on several fibers with a hypocycloid core contour and a cladding structure made of a single ring from a tubular amorphous lattice, including one with a record transmission loss of 7.7 dB/km at ∼750 nm (only a factor ∼2 above the SRSL) and a second with an ultrabroad fundamental band with loss in the range of 10–20 dB/km, spanning from 600 to 1200 nm. The reduction in confinement loss makes these fibers serious contenders for light transmission below the SRSL in the UV–VIS–NIR spectral range and could find application in high-energy pulse laser beam delivery or gas-based coherent and nonlinear optics.

ACS Style

B. Debord; A. Amsanpally; M. Chafer; Assaad Baz; M. Maurel; J. M. Blondy; E. Hugonnot; F. Scol; Luca Vincetti; F. Gérôme; F. Benabid. Ultralow transmission loss in inhibited-coupling guiding hollow fibers. Optica 2017, 4, 209 -217.

AMA Style

B. Debord, A. Amsanpally, M. Chafer, Assaad Baz, M. Maurel, J. M. Blondy, E. Hugonnot, F. Scol, Luca Vincetti, F. Gérôme, F. Benabid. Ultralow transmission loss in inhibited-coupling guiding hollow fibers. Optica. 2017; 4 (2):209-217.

Chicago/Turabian Style

B. Debord; A. Amsanpally; M. Chafer; Assaad Baz; M. Maurel; J. M. Blondy; E. Hugonnot; F. Scol; Luca Vincetti; F. Gérôme; F. Benabid. 2017. "Ultralow transmission loss in inhibited-coupling guiding hollow fibers." Optica 4, no. 2: 209-217.

Journal article
Published: 11 May 2016 in Optics Letters
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We report on a new and highly compact scheme for the generation and sustainment of microwave-driven plasmas inside the core of an inhibited coupling Kagome hollow-core photonic crystal fiber. The microwave plasma generator consists of a split-ring resonator that efficiently couples the microwave field into the gas-filled fiber. This coupling induces the concomitant generation of a microwave surface wave at the fiber core surround and a stable plasma column confined in the fiber core. The scheme allowed the generation of several centimeters long argon microplasma columns with a very low excitation power threshold. This result represents an important step toward highly compact plasma lasers or plasma-based photonic components.

ACS Style

Florian Vial; Katell Gadonna; Benoît Debord; Frédéric Delahaye; Foued Amrani; Olivier Leroy; Frédéric Gérôme; Fetah Benabid. Generation of surface-wave microwave microplasmas in hollow-core photonic crystal fiber based on a split-ring resonator. Optics Letters 2016, 41, 2286 -2289.

AMA Style

Florian Vial, Katell Gadonna, Benoît Debord, Frédéric Delahaye, Foued Amrani, Olivier Leroy, Frédéric Gérôme, Fetah Benabid. Generation of surface-wave microwave microplasmas in hollow-core photonic crystal fiber based on a split-ring resonator. Optics Letters. 2016; 41 (10):2286-2289.

Chicago/Turabian Style

Florian Vial; Katell Gadonna; Benoît Debord; Frédéric Delahaye; Foued Amrani; Olivier Leroy; Frédéric Gérôme; Fetah Benabid. 2016. "Generation of surface-wave microwave microplasmas in hollow-core photonic crystal fiber based on a split-ring resonator." Optics Letters 41, no. 10: 2286-2289.

Preprint
Published: 01 July 2015
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We report on the measurement of ground state atomic polarization relaxation tile of Rb vapor confined in five different hypocycloidal core shape Kagome hollow core photonic crystal fibers made with uncoated silica glass. We are able to distinguish between wall-collision and transit-time effects in optical waveguide and deduce the contribution of the atom's dwell time at the core wall surface. In contrast with convetional macroscopic atomic cell configuration, and in agreement with Monte Carlo simulations, the measured relaxation times were found to be at least one order of magnitude longer than the limit set by the atom-wall collisional relaxation from thermal atoms. This extended relaxation time is explained by the combination of a stronger contribution of the slow atoms in the atomic polarization build-up, and of the relatively significant contribution of dwell time to the relaxation process of the ground state polarization.

ACS Style

T. D. Bradley; E. Ilinova; J. J. McFerran; J. Jouin; B. Debord; M. Alharbi; P. Thomas; F. Gérôme; F. Benabid. Ground-state atomic polarization relaxation-time measurement of Rb filled hypocycloidal core-shaped Kagome HC-PCF. 2015, 1 .

AMA Style

T. D. Bradley, E. Ilinova, J. J. McFerran, J. Jouin, B. Debord, M. Alharbi, P. Thomas, F. Gérôme, F. Benabid. Ground-state atomic polarization relaxation-time measurement of Rb filled hypocycloidal core-shaped Kagome HC-PCF. . 2015; ():1.

Chicago/Turabian Style

T. D. Bradley; E. Ilinova; J. J. McFerran; J. Jouin; B. Debord; M. Alharbi; P. Thomas; F. Gérôme; F. Benabid. 2015. "Ground-state atomic polarization relaxation-time measurement of Rb filled hypocycloidal core-shaped Kagome HC-PCF." , no. : 1.

Preprint
Published: 03 June 2015
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Since the advent of atom laser-cooling, trapping or cooling natural molecules has been a long standing and challenging goal. Here, we demonstrate a method for laser-trapping molecules that is radically novel in its configuration, in its underlined physical dynamics and in its outcomes. It is based on self-optically spatially-nanostructured high pressure molecular hydrogen confined in hollow-core photonic-crystal-fibre. An accelerating molecular-lattice is formed by a periodic potential associated with Raman saturation except for a 1-dimentional array of nanometer wide and strongly-localizing sections. In these sections, molecules with a speed of as large as 1800 m/s are trapped, and stimulated Raman scattering in the Lamb-Dicke regime occurs to generate high power forward and backward-Stokes continuous-wave laser with sideband-resolved sub-Doppler emission spectrum. The spectrum exhibits a central line with a sub-recoil linewidth of as low as 14 kHz, more than 5 orders-of-magnitude narrower than in conventional Raman scattering, and sidebands comprising Mollow triplet, molecular motional-sidebands and four-wave-mixing.

ACS Style

M. Alharbi; A. Husakou; B. Debord; F. Gérôme; F. Benabid. Deeply-trapped molecules in self-nanostructured gas-phase material. 2015, 1 .

AMA Style

M. Alharbi, A. Husakou, B. Debord, F. Gérôme, F. Benabid. Deeply-trapped molecules in self-nanostructured gas-phase material. . 2015; ():1.

Chicago/Turabian Style

M. Alharbi; A. Husakou; B. Debord; F. Gérôme; F. Benabid. 2015. "Deeply-trapped molecules in self-nanostructured gas-phase material." , no. : 1.

Journal article
Published: 15 February 2015 in Optics Letters
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A V V Nampoothiri; B Debord; M Alharbi; F Gérôme; F Benabid; W Rudolph. CW hollow-core optically pumped I? fiber gas laser. Optics Letters 2015, 40, 1 .

AMA Style

A V V Nampoothiri, B Debord, M Alharbi, F Gérôme, F Benabid, W Rudolph. CW hollow-core optically pumped I? fiber gas laser. Optics Letters. 2015; 40 (4):1.

Chicago/Turabian Style

A V V Nampoothiri; B Debord; M Alharbi; F Gérôme; F Benabid; W Rudolph. 2015. "CW hollow-core optically pumped I? fiber gas laser." Optics Letters 40, no. 4: 1.

Journal article
Published: 11 February 2015 in Optics Letters
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Continuous wave lasing of a hollow-core fiber gas laser (HOFGLAS) is achieved with molecular iodine in the 1280–1340 nm region when optically pumped at 532 nm.

ACS Style

A. V. V. Nampoothiri; B. Debord; M. Alharbi; F. Gèrôme; F. Benabid; W. Rudolph. CW hollow-core optically pumped I_2 fiber gas laser. Optics Letters 2015, 40, 605 .

AMA Style

A. V. V. Nampoothiri, B. Debord, M. Alharbi, F. Gèrôme, F. Benabid, W. Rudolph. CW hollow-core optically pumped I_2 fiber gas laser. Optics Letters. 2015; 40 (4):605.

Chicago/Turabian Style

A. V. V. Nampoothiri; B. Debord; M. Alharbi; F. Gèrôme; F. Benabid; W. Rudolph. 2015. "CW hollow-core optically pumped I_2 fiber gas laser." Optics Letters 40, no. 4: 605.