Open AccessTransverse spatial structure of a high Fresnel number Vertical External Cavity Surface Emitting Laser
Author(s) -
X. Hachair,
Sylvain Barbay,
T. Elsass,
I. Sagnes,
R. Kuszelewicz
Publication year - 2008
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.16.009519
Subject(s) - optics , laser , fresnel number , transverse plane , longitudinal mode , materials science , transverse mode , fresnel equations , fresnel zone , physics , refractive index , diffraction , structural engineering , engineering
The transverse spatial structure of an optically-pumped, Vertical External Cavity Surface Emitting Laser is investigated experimentally. The Fresnel number of the laser cavity is controlled with an intracavity lens. We show how the emission profile changes when passing from a low to a high Fresnel number configuration and analyze the RF spectrum of the total laser intensity. Though the laser operates in a multi-longitudinal mode configuration, the transverse profile of the laser emission shows well organized patterns.