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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Grover Swartzlander
  • Vol. 30, Iss. 12 — Dec. 1, 2013
  • pp: 3184–3192

Tapered diode-pumped continuous-wave alexandrite laser

Ersen Beyatli, Ilyes Baali, Bernd Sumpf, Götz Erbert, Alfred Leitenstorfer, Alphan Sennaroglu, and Umit Demirbas  »View Author Affiliations


JOSA B, Vol. 30, Issue 12, pp. 3184-3192 (2013)
http://dx.doi.org/10.1364/JOSAB.30.003184


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Abstract

We describe a low-cost and efficient alexandrite (Cr:BeAl2O4) laser that is pumped by a high-brightness tapered diode laser (TDL). The tapered diode (TD) provides up to 1.1 W of output power and its wavelength can be fine-tuned to either 680.4 nm (R1 line) or 678.5 nm (R2 line) for efficient in-line pumping. Continuous-wave (cw) output powers of 200 mW, slope efficiencies as high as 38%, and a cw tuning range extending from 724 to 816 nm have been achieved. To the best of our knowledge, the cw power levels and slope efficiencies are the highest demonstrated so far from such a minimal complexity and low-cost system based on the alexandrite gain medium. Consequently, TDs operating in the red spectral region have the potential to become the standard pump sources for cw alexandrite lasers in the near future.

© 2013 Optical Society of America

OCIS Codes
(140.3480) Lasers and laser optics : Lasers, diode-pumped
(140.3580) Lasers and laser optics : Lasers, solid-state
(140.3600) Lasers and laser optics : Lasers, tunable
(140.7300) Lasers and laser optics : Visible lasers
(160.3380) Materials : Laser materials

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: August 5, 2013
Revised Manuscript: October 12, 2013
Manuscript Accepted: October 14, 2013
Published: November 12, 2013

Citation
Ersen Beyatli, Ilyes Baali, Bernd Sumpf, Götz Erbert, Alfred Leitenstorfer, Alphan Sennaroglu, and Umit Demirbas, "Tapered diode-pumped continuous-wave alexandrite laser," J. Opt. Soc. Am. B 30, 3184-3192 (2013)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-30-12-3184

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