Two-wave-mixing induced self-focusing in an active photorefractive oscillator

Authors
Vaupel, M Mandel, O Heckenberg, NR
Citation
M. Vaupel et al., Two-wave-mixing induced self-focusing in an active photorefractive oscillator, J OPT B-QUA, 1(1), 1999, pp. 96-100
Citations number
22
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF OPTICS B-QUANTUM AND SEMICLASSICAL OPTICS
ISSN journal
14644266 → ACNP
Volume
1
Issue
1
Year of publication
1999
Pages
96 - 100
Database
ISI
SICI code
1464-4266(199902)1:1<96:TISIAA>2.0.ZU;2-B
Abstract
We derive a nonlinear wave equation for a signal beam which is coupled to a pump beam by two-wave-mixing in a photorefractive crystal. This equation d escribes self-focusing of the signal beam. We compare two-wave-mixing induc ed spatial self-focusing of single-pass experiments in a diffusion-type pho torefractive crystal and of a photorefractive oscillator using the same cry stal. We observe that the nonlinear refractive index change in the oscillat or is decreased while increasing resonator losses.