The processes of graphene structures formation under the action of the femtosecond laser radiation on carbon samples in liquid nitrogen are discussed. Mechanisms of graphene sheets exfoliation are proposed depending on the power density of the laser radiation: in the first case, the separation occurs due to the volumetric expansion during heating the region occupied by nitrogen molecules; at a laser radiation energy exceeding the ablation threshold, the surface of graphite begins to breakdown in the region of the action, followed by separation into graphene layers.

The possibility of an alternative approach to structure determination based on the methodology of matching the external shape of the obtained samples with a set of layerwise growth polyhedra is...

In this paper we consider the possibilities of thin-film coatings micromachining by femtosecond laser radiation (wavelength λ = 1030 nm, pulse repetition frequency f = 10 kHz, Emax pulse energy ≈ 150 μJ, pulse duration τ ≈ 280 fs) for elements of microelectronics and optoelectronics. Using self-developed software the thin film elements with a given geometry were designed and formed on a surface of the quartz substrate. Examples of the microelements formation by selective laser ablation of a samples with deposited metal coating are shown.

The structure of medium power laser diode packages and its application areas are considered. Main principles, working parameters and operation features of the laser diode driver with a microprocessor-based control system are described.

Results are presented from experimental studies of the filamentation of femtosecond laser radiation in a transparent medium. Schemes for registering plasma channels of filaments, conical emission, and

The work is devoted to the problem of creating interfaces of metallic nanoantennas for optoplasmonics. The technology of micro- and nanoscale elements topology formation by the method of selective laser ablation of thin-film coatings is described. The possibility of using the femtosecond laser complex for rapid prototyping of various geometric configurations of optical antennas interfaces is shown.