Simultaneous brightness enhancement and wavelength conversion to the eye-safe region in a high-power diamond Raman laser

Aaron McKay*, Ondrej Kitzler, Richard P. Mildren

*Corresponding author for this work

Research output: Contribution to journalLetter

39 Citations (Scopus)

Abstract

Brightness enhancement in an external cavity diamond Raman laser designed for high power conversion of a neodymium (1064 nm) laser to the eye-safe spectral region is reported. Using a multimode input beam pulsed at 36 kHz pulse repetition frequency, 16.2 W with 40% overall conversion efficiency was obtained at the second Stokes wavelength of 1485 nm. 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. Brightness enhancement in an external cavity diamond Raman laser designed for high power conversion of a neodymium laser to the eye-safe spectral region is reported. Using a multimode input beam pulsed at 36 kHz pulse repetition frequency, 16.2 W with 40% overall conversion efficiency was obtained at the second Stokes wavelength of 1485 nm. 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.

Original languageEnglish
Pages (from-to)L37-L41
Number of pages5
JournalLaser and Photonics Reviews
Volume8
Issue number3
DOIs
Publication statusPublished - 2014

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