Mode conversion under the influence of ultrashort laser pulses in planar semiconductor waveguides

Autor: V A Karavanskiĭ, V L Smirnov, V F Lamekin, A. I. Zavalin, I V Nikolaev
Rok vydání: 1988
Předmět:
Zdroj: Soviet Journal of Quantum Electronics. 18:896-897
ISSN: 0049-1748
DOI: 10.1070/qe1988v018n07abeh012321
Popis: An experimental study was made of the processes of intermode conversion of surface light waves in semiconductor waveguides in which diffraction gratings were induced by ultrashort (~ 20 ps) light pulses. The conversion efficiency was determined as a function of the power density of ultrashort pulses and of the delay time between the moments of excitation and probing of the diffraction grating. The efficiency of conversion of ultrashort pulses from the TE0 to the TE1 mode was 65%. The magnitude of the efficiency and its kinetics depended strongly on the processes of the induced absorption of light.
Databáze: OpenAIRE