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Author Ganin, D. V. ♦ Lapshin, K. E. ♦ Obidin, A. Z. ♦ Vartapetov, S. K.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY ♦ DIAPHRAGM ♦ FOCUSING ♦ GRAPHITE ♦ LASER RADIATION ♦ MICROSTRUCTURE ♦ PHOTON BEAMS ♦ PLASMA ♦ POLYCARBONATES ♦ PULSES ♦ REFRACTIVE INDEX ♦ SCREENS
Abstract We present the result of the experiments on producing graphite-like cylindrical microstructures by focusing single femtosecond laser pulses into the bulk of a transparent polymer (polycarbonate). The microstructures are embedded in a cladding with a modified refractive index, possessing waveguide properties. In the experiments with nontransparent screens and diaphragms, placed in the laser beam in front of the entrance pupil of the objective with a large numerical aperture, we have found that the paraxial rays are blocked by the peripheral ones, which reduces the length of the destruction region in the pre-focal zone. In the experiments with transparent screens and diaphragms, introducing optical delays τ{sub d} between the paraxial and peripheral rays, the quantitative dependence of the destruction region length in the pre-focal zone on the value of τ{sub d} is determined. (interaction of laser radiation with matter. laser plasma)
ISSN 10637818
Educational Use Research
Learning Resource Type Article
Publisher Date 2015-11-30
Publisher Place United States
Journal Quantum Electronics
Volume Number 45
Issue Number 11


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