Multiwave stimulated raman scattering under quasi-phase-matching conditions |
| |
Authors: | V G Bespalov N S Makarov |
| |
Institution: | (1) Vavilov State Optical Institute All-Russia Research Center, St. Petersburg, 199034, Russia;(2) Institute of Fine Mechanics and Optics, St. Petersburg, 197101, Russia |
| |
Abstract: | The effect of the generation of higher Stokes and anti-Stokes components of steady-state and transient stimulated Raman scattering (SRS) on the realization of quasi-phase-matching conditions in the course of generation of the first anti-Stokes SRS component is numerically analyzed by using a system of coupled equations derived with regard to diffraction effects. The calculations show that the application of a periodic layered structure in order to realize quasi-phase-matching conditions virtually does not reduce the anti-Stokes SRS efficiency and allows efficient conversion of pulses with a duration of 3 ns or longer. It is found that focusing of waves inside the medium allows partial compensation for diffraction spreading and provides for an increase in the efficiency of anti-Stokes SRS conversion, and, at a Fresnel number above three, the effect of diffraction on the realization of quasi-phase-matching conditions during SRS can be disregarded. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|