| Issue |
Europhys. Lett.
Volume 44, Number 5, December I 1998
|
|
|---|---|---|
| Page(s) | 592 - 598 | |
| Section | Classical areas of phenomenology | |
| DOI | https://doi.org/10.1209/epl/i1998-00514-3 | |
| Published online | 01 September 2002 | |
Cross-phase-modulation–induced self-focusing in parametric oscillators
1
Laboratoire Kastler Brossel, University P. et M. Curie - Case 74, 75252 Paris, France
2
Physikalisch-Technische Bundesanstalt - 38116 Braunschweig, Germany
Received:
13
March
1998
Accepted:
15
October
1998
The dependence of spatial self-focusing on resonator detuning is
experimentally investigated in the active medium of a photorefractive
oscillator which is a parametric oscillator with narrow gain linewidth.
Beam diameter of the 
-mode and beat frequency of the
-mode and another simultaneously emitted transverse mode
depend on detuning like a dispersion-shaped function. The maximum strength
of self-focusing and the corresponding frequency shift are in the resonator
strongly reduced with respect to single-pass wave mixing.
PACS: 42.65.Jx – Beam trapping, self-focusing, and thermal blooming / 42.60.Fc – Modulation, tuning, and mode locking / 42.65.Hw – Phase conjugation, optical mixing, and photorefractive effect
© EDP Sciences, 1998
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