Phys. Rev. A 64, 063807 (2001) [5 pages]Formation of optical vortex lattices in solid-state microchip lasers: Spontaneous transverse mode lockingReceived 2 April 2001; published 14 November 2001 We experimentally investigate pattern formation in a solid-state microchip laser with a large Fresnel number. Controlling the reflectivity of the output coupler can generate the stable square pattern of optical vortex lattices. The formation of square vortex lattices is found to be a spontaneous process of transverse mode locking within almost-degenerated mode families. The frequency of self-induced oscillation in square vortex lattices agrees well with the numerical calculation. The chaotic relaxation oscillation is found in square vortex lattices due to the multi-longitudinal-mode operation. © 2001 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.64.063807
DOI:
10.1103/PhysRevA.64.063807
PACS:
42.60.-v, 42.65.-k, 42.50.-p
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