Research of influence of parameters of ultrashort pulse on intensity of precursors
E.S. Kozlova , V.V. Kotlyar

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Full text of article: Russian language.

DOI: 10.18287/0134-2452-2013-37-4-436-442

Pages: 436-442.

Abstract:
Simulation of short optical pulses in the planar waveguide of silica glass showed that in the case of initial rectangular pulse with a carrier wavelength λ0=532 nm (away from resonance) and pulse duration equal 0,5λ0(n+0,5), n - an integer, precursors intensity increases by about 2 at a distance of tens of microns away from the origin. Although intensity of precursors is about 1% compared with the intensity of the main pulse. But if you choose the length of the pulse wave at the nearest resonance (λ0=120 nm), the intensity of the precursors may exceed the intensity of the main pulse of 4 times.

Key words:
frequency dispersion, Sellmeyer’s model, ultrashort rectangular pulse, optical precursor.

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