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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Vol. 16, Iss. 12 — Dec. 1, 1999
  • pp: 2207–2216

High beam quality of ultraviolet radiation generated through resonant enhanced frequency doubling of a diode laser

Anish K. Goyal, Jayant D. Bhawalkar, Yves Conturie, Paul Gavrilovic, Yalan Mao, Hong Po, and John Guerra  »View Author Affiliations


JOSA B, Vol. 16, Issue 12, pp. 2207-2216 (1999)
http://dx.doi.org/10.1364/JOSAB.16.002207


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Abstract

The infrared emission from an external-cavity-tapered diode laser is frequency doubled in a 5-mm β-BaB2O4 crystal that is placed in a resonant-enhancement cavity. For a coupled diode power of 535 mW, 100 mW of continuous-wave, second-harmonic power is generated at λ=392 nm. The ultraviolet (UV) beam is measured to have a nearly ideal beam-quality parameter, M2≃1, in both meridians even though substantial double refraction is present in the nonlinear crystal. Printing of an array of submicron dots on a phase-change film is demonstrated with this UV beam. Also, by printing on photochemical film we demonstrate that improved film sensitivity is possible when a UV source is used.

© 1999 Optical Society of America

OCIS Codes
(140.2020) Lasers and laser optics : Diode lasers
(140.4780) Lasers and laser optics : Optical resonators
(190.2620) Nonlinear optics : Harmonic generation and mixing

Citation
Anish K. Goyal, Jayant D. Bhawalkar, Yves Conturie, Paul Gavrilovic, Yalan Mao, Hong Po, and John Guerra, "High beam quality of ultraviolet radiation generated through resonant enhanced frequency doubling of a diode laser," J. Opt. Soc. Am. B 16, 2207-2216 (1999)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-16-12-2207

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