Prof. Dr. Márcio A. R. C. Alencar
Departamento de Física, Universidade Federal de Sergipe, Aracaju, Sergipe, Brazil
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Academic Career Length
26Years (2001-Present)
(Calculated once Scilit publication data is synced: current year − year of first publication + 1)
Representative Publications
View All Publications7 June 2004 in Applied Physics Letters
Journal Article
Márcio A. R. C. AlencarGMGlauco S. Maciel
Glauco S. Maciel
CACid B. de Araújo
Cid B. de AraújoAPAmitava Patra
Amitava Patra
Frequency upconverted emissions centered at 526 and 547 nm from two thermodynamically coupled excited states of doped in nanocrystals were recorded in the temperature range from 322 to 466 K using a diode laser emitting at 980 nm as the excitation source. The ensemble measurements of the fluorescence intensity ratio (FIR) of the signals at 526 and 547 nm as a function of the temperature showed that the sensitivity (the rate in which the FIR changes with the temperature) of such sensor depends on the size of the nanocrystal. This is explained taking into consideration modifications of nonraditive relaxation mechanisms with the size of the nanocrystals.
1 May 2005 in Chemical Physics Letters
Journal Article
APAmitava Patra
Amitava Patra
SSSujata Saha
Sujata Saha
Márcio A. R. C. AlencarNRNikifor Rakov
Nikifor Rakov
GMGlauco S. Maciel
Glauco S. Maciel
23 October 2006 in Applied Physics Letters
Journal Article
RSRogério F. Souza
Rogério F. Souza
Márcio A. R. C. AlencarJHJandir M. Hickmann
Jandir M. Hickmann
RKRenata Kobayashi
Renata Kobayashi
Luciana Reyes Pires KassabThe third-order nonlinear optical properties of tellurite glasses with different compositions were investigated in the femtosecond regime at . Using the -scan technique, positive nonlinear refractive indices of were measured. The authors also determined that nonlinear absorption was negligible for all studied samples. This result, added to their good chemical stability, indicates that tellurite glasses are promising materials for ultrafast photonic applications.
28 April 2005 in The Journal of Physical Chemistry B
Journal Article
APAmitava Patra
Amitava PatraPGPushpal Ghosh
Pushpal GhoshPCParamita Saha Chowdhury
Paramita Saha Chowdhury
Márcio A. R. C. AlencarWBWhualkuer Lozano B.
Whualkuer Lozano B.
GMGlauco S. Maciel
Glauco S. Maciel
+1
1 March 2016 in Chemical Physics Letters
Journal Article
LALuis M.G. Abegão
Luis M.G. Abegão
RFRuben D. Fonseca
Ruben D. Fonseca
FSFrancisco A. Santos
Francisco A. SantosGSGabriela B. Souza
Gabriela B. Souza
ABAndré Luis B.S. Barreiros
André Luis B.S. Barreiros
JRJ.J. Rodrigues
J.J. Rodrigues
+5
19 September 2006 in Journal of Optics A: Pure and Applied Optics
Journal Article
CNCesar M Nascimento
Cesar M Nascimento
Márcio A. R. C. AlencarSCSabino Chávez-Cerda
Sabino Chávez-Cerda
MSMonique G A da Silva
Monique G A da Silva
MMMario Meneghetti
Mario MeneghettiJHJandir M Hickmann
Jandir M Hickmann
About Me
Márcio graduated in 1997 with a degree in Electronic Engineering from the Universidade Federal de Pernambuco, Brazil. In 2004, he received a PhD in Physics for his research on the nonlinear optical effects of organic liquids and nanostructured materials, supervised by Prof. Dr. Cid Bartolomeu de Araújo. In 2006, he became an associate professor at the Physics Institute of Universidade Federal de Alagoas (Brazil) and joined the research staff of the Optics and Materials Group (OPTMA). In 2013, he moved to Universidade Federal de Sergipe (UFS), Brazil and became the co-leader of the newly-founded Optics Group. Currently, he is titular professor at the Physics Department of UFS. His research interests focus on several aspects of nonlinear optics, such as optical characterization of organic materials, glasses and nanomaterials, rare-earth spectroscopy, transverse and nonlocal nonlinear effects, random lasers, photonic crystals, and others.
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