WALK-OFF AND PUMP ENERGY-DEPENDENCE OF TRANSVERSE BEAM PROFILES ON TRAVELING-WAVE PARAMETRIC GENERATION

Citation
T. Nishikawa et N. Uesugi, WALK-OFF AND PUMP ENERGY-DEPENDENCE OF TRANSVERSE BEAM PROFILES ON TRAVELING-WAVE PARAMETRIC GENERATION, Optics communications, 140(4-6), 1997, pp. 277-280
Citations number
9
Categorie Soggetti
Optics
Journal title
ISSN journal
00304018
Volume
140
Issue
4-6
Year of publication
1997
Pages
277 - 280
Database
ISI
SICI code
0030-4018(1997)140:4-6<277:WAPEOT>2.0.ZU;2-Q
Abstract
The phase-matching angle and pump energy dependence of transverse beam profiles on traveling-wave parametric generation in KTiOPO4 crystals are numerically calculated and compared with the previously measured r esults. It is found that the idler beam profile stretches in its walk- off direction and the signal beam profile stretches in the opposite di rection as the idler walk-off angle becomes large due to the walk-off and back-conversion effects in the propagation process. It is also fou nd that, even if walk-off does not exist, the transverse beam profile has a manifold ring shape as the pump energy is increased due to repea ted conversion and back-conversion. (C) 1997 Elsevier Science B.V.