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Generation of 90-mW continuous-wave tunable laser light at 280 nm by frequency doubling in a KDP crystal

1995; Optica Publishing Group; Volume: 20; Issue: 8 Linguagem: Inglês

10.1364/ol.20.000840

1539-4794

J. S. Nielsen,

Photonic and Optical Devices

Laser light at a wavelength of 560 nm from a commercial ring dye laser has been frequency doubled in an external enhancement cavity with a KDP crystal. The cavity employs a new design consisting of only three mirrors, permitting a shorter cavity length as well as compensation for astigmatism and coma. With an input power of ~950 mW of green light, ~90 mW of UV light has been produced. The wavelength of the UV light can be tuned corresponding to +/-3 nm by angle tuning of the crystal, and the optical frequency can be scanned electronically up to +/-10 GHz.