The results of a study on the spatial coherence of a generalized diffraction-filtered resonator (GDFR) copper vapor laser (CVL) for various magnifications are presented. The coherence width and output power are compared with that of unstable resonators (UR’s) of equivalent magnifications. It is established, by use of reversal shear interferometry, that the GDFR CVL beam has better spatial coherence and average power characteristics than the UR CVL beam for equivalent resonator magnifications.
© 1998 Optical Society of America
(030.1640) Coherence and statistical optics : Coherence
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(140.4780) Lasers and laser optics : Optical resonators
(140.7300) Lasers and laser optics : Visible lasers
Om Prakash, Paritosh K. Shukla, Sudhir K. Dixit, Sanjeeb Chatterjee, Harilal S. Vora, and Rajiva Bhatnagar, "Spatial Coherence of the Generalized Diffraction-Filtered Resonator Copper Vapor Laser," Appl. Opt. 37, 7752-7757 (1998)