All-solid-state wide-beam flat-top laser

Details All-solid-state wide-beam flat-top laser All-solid-state wide-beam flat-top laser

Sep 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002spie.4914..331c&link_type=abstract

Proc. SPIE Vol. 4914, p. 331-334, High-Power Lasers and Applications II, Dianyuan Fan; Keith A. Truesdell; Koji Yasui; Eds.

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Scientific paper

A solid-state laser source with flat-top wide beam profile was designed and made. The laser source was mainly made up of an Nd:YAG solid-state laser at 1064 nm and a maximum 267 X collimating telescope. A 2 W laser diode (LD) pumped Nd:YAG laser with flat-concave cavity was adopted as the primary laser source at 1064 nm. Then the output laser (1064 nm) was injected into a collimating telescope. We designed three schemes according to spherical wave theory and chose the best one based on our experiments. We found out the spherical aberration (including axial and off-axial points) must be corrected. At last, an output laser beam with 80 mm diameter, 0.4 mrad divergence angle, > 50 mW output power, and +/- 10% intensity distribution of cross section, was obtained.

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