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Phys. Rev. A 65, 013802 (2001) [6 pages]

Transverse pattern formation of optical vortices in a microchip laser with a large Fresnel number

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Y. F. Chen*
Department of Electrophysics, National Chiao Tung University, Hsinchu, Taiwan, Republic of China

Y. P. Lan
Institute of Electro-Optical Engineering, National Chiao Tung University, Hsinchu, Taiwan, Republic of China

Received 11 June 2001; published 5 December 2001

We experimentally investigate the dependence of the transverse pattern formation in a solid-state microchip laser on the Fresnel number. Controlling the transverse-mode spacing and the mode size can generate the stable transverse pattern of optical vortex lattices. A spontaneous process of transverse-mode locking within almost-degenerated mode families is found in the formation of vortex lattices. The frequency of self-induced oscillation in vortex lattices agrees well with the previous theoretical prediction.

© 2001 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevA.65.013802
DOI:
10.1103/PhysRevA.65.013802
PACS:
42.55.Px, 42.65.Sf, 42.60.Mi

*Author to whom correspondence should be addressed: Department of Electrophysics, National Chiao Tung University, 1001 TA Hsueh Road, Hsinchu, Taiwan, 30050. FAX: (886-35) 729134. Email address: yfchen@cc.nctu.edu.tw

 
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