Journal
LASER & PHOTONICS REVIEWS
Volume 8, Issue 3, Pages L37-L41Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/lpor.201400012
Keywords
diamond; raman laser; eye-safe; high power lasers; brightness conversion
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Funding
- Australian Research Council [FT0990622, DP130103799]
- US Air Force Research Laboratory [FA2386-12-1-4055]
- Australian Research Council [FT0990622] Funding Source: Australian Research Council
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Brightness enhancement in an external cavity diamond Raman laser designed for high power conversion of a neodymium (1064nm) laser to the eye-safe spectral region is reported. Using a multimode input beam pulsed at 36kHz pulse repetition frequency, 16.2W with 40% overall conversion efficiency was obtained at the second Stokes wavelength of 1485nm. The output beam had a quality factor of M2=1.17 +/- 0.08 which is a factor of 2.7 times lower than that of the input beam, resulting in a higher overall brightness. The output power, brightness, and brightness enhancement obtained represent significant advances in performance for Raman lasers as well as other competing kHz-pulsed eye-safe technologies.
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