Open AccessLow threshold characteristic of pulsed confocal unstable optical parametric oscillators with Gaussian reflectivity mirrors
Author(s) -
Simin Zou,
Mali Gong,
Qiang Liu,
Gang Chen
Publication year - 2005
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/opex.13.000776
Subject(s) - optics , optical parametric oscillator , resonator , gaussian , reflectivity , materials science , parametric statistics , confocal , physics , laser , mathematics , statistics , quantum mechanics
An iterative threshold model for a pulsed singly resonant Gaussian-reflectivity-mirror (GRM) confocal unstable optical parametric oscillator (OPO) has been proposed. It is found that OPO threshold is determined by important parameters such as GRM central reflectance, Gaussian reflectivity profile, cavity magnification factor, cavity physical length, crystal length, pump pulsewidth. It is demonstrated that this model can be extended to plane-parallel resonator or uniform-reflectivity-mirror (URM) unstable resonator when some specific values are taken. Experimental results show excellent agreement with values calculated from theoretical model. Both theoretical calculations and experimental data illustrate that GRM is a useful solution to reduce threshold of unstable OPO.