Transverse quasi-periodic structure of optical fields in a wide-aperture laser with a saturable absorber

N. E. Molevich; A. P. Zaikin

doi:10.1117/12.335843

6 January 1999 Transverse quasi-periodic structure of optical fields in a wide-aperture laser with a saturable absorber

N. E. Molevich, A. P. Zaikin

Proceedings Volume 3685, Laser Optics '98: Fundamental Problems of Laser Optics; (1999) https://doi.org/10.1117/12.335843
Event: Laser Optics '98, 1998, St. Petersburg, Russian Federation

Abstract

A theoretical investigation was made of the dynamics of generation of an optical field in a Fabry-Perot cavity with an active medium and a bleachible filter, considered in the limiting case of an infinitely large aperture and in the case of real laser. Self-similar wave solutions were obtained in the first case, wave velocity and frequency were determined. For the second case it is created the spatiotemporal numerical model which permits to find the states of the optical field E(x,z,t) at the every cavity round-trip time. Using this model we investigated the formation of the transverse structure of laser fields at the different parameters of active media and saturable absorber. It is found the stationary quasi-periodic waves traveling across the finite aperture at a slow response time of an active medium. Their structure and the conditions of their excitation are considered.

Citation Download Citation

N. E. Molevich and A. P. Zaikin "Transverse quasi-periodic structure of optical fields in a wide-aperture laser with a saturable absorber", Proc. SPIE 3685, Laser Optics '98: Fundamental Problems of Laser Optics, (6 January 1999); https://doi.org/10.1117/12.335843

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