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Proceedings Article

Recent advances in non-linear frequency conversion of high-power, single-mode diode lasers

[+] Author Affiliations
Thorsten Schmitt, Anselm Deninger, Frank Lison, Wilhelm Kaenders

TOPTICA Photonics AG (Germany)

Proc. SPIE 5707, Solid State Lasers XIV: Technology and Devices, 16 (May 05, 2005); doi:10.1117/12.590465
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From Conference Volume 5707

  • Solid State Lasers XIV: Technology and Devices
  • Hanna J. Hoffman; Ramesh K. Shori
  • San Jose, CA | January 22, 2005

abstract

Frequency conversion of near-infrared diode lasers provides an efficient method to generate tunable laser radiation in the near-UV, violet and blue-green spectral range. High-power, coherent fundamental laser sources such as master oscillator-power amplifier (MOPA) configurations are now state of the art and commercially available. A new, highly efficient material for second-harmonic generation (SHG) is Bismuth Triborate ("BiBO", stoichiometry BiB3O6). The material has a high effective non-linearity deff, is non-hygroscopic and transparent for wavelengths between 286 nm and 2.5 μm. Compared to other non-linear crystals, "walk-off" effects between fundamental laser radiation and frequency-doubled beam are considerably lower. We used a BiBO crystal in a resonant doubling cavity to convert the output of a 780 nm, 900 mW tapered amplifier system. A maximum UV power of 400 mW (conversion efficiency 44%) was attained. This value is 3-4 times higher than previous results obtained with LBO or BBO crystals and, to the best of our knowledge, represents the highest tunable cw power of a frequency-converted diode laser.

© (2005) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Thorsten Schmitt ; Anselm Deninger ; Frank Lison and Wilhelm Kaenders
"Recent advances in non-linear frequency conversion of high-power, single-mode diode lasers", Proc. SPIE 5707, Solid State Lasers XIV: Technology and Devices, 16 (May 05, 2005); doi:10.1117/12.590465; http://dx.doi.org/10.1117/12.590465


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