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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 6 — Mar. 24, 2014
  • pp: 6372–6380

High-efficiency 20 W yellow VECSEL

Emmi Kantola, Tomi Leinonen, Sanna Ranta, Miki Tavast, and Mircea Guina  »View Author Affiliations

Optics Express, Vol. 22, Issue 6, pp. 6372-6380 (2014)

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A high-efficiency optically pumped vertical-external-cavity surface-emitting laser emitting 20 W at a wavelength around 588 nm is demonstrated. The semiconductor gain chip emitted at a fundamental wavelength around 1170-1180 nm and the laser employed a V-shaped cavity. The yellow spectral range was achieved by intra-cavity frequency doubling using a LBO crystal. The laser could be tuned over a bandwidth of ~26 nm while exhibiting watt-level output powers. The maximum conversion efficiency from absorbed pump power to yellow output was 28% for continuous wave operation. The VECSEL’s output could be modulated to generate optical pulses with duration down to 570 ns by directly modulating the pump laser. The high-power pulse operation is a key feature for astrophysics and medical applications while at the same time enables higher slope efficiency than continuous wave operation owing to decreased heating.

© 2014 Optical Society of America

OCIS Codes
(140.3460) Lasers and laser optics : Lasers
(140.3480) Lasers and laser optics : Lasers, diode-pumped
(140.3600) Lasers and laser optics : Lasers, tunable
(140.5960) Lasers and laser optics : Semiconductor lasers
(140.3515) Lasers and laser optics : Lasers, frequency doubled
(140.3538) Lasers and laser optics : Lasers, pulsed

ToC Category:
Lasers and Laser Optics

Original Manuscript: January 2, 2014
Revised Manuscript: February 20, 2014
Manuscript Accepted: February 25, 2014
Published: March 11, 2014

Virtual Issues
Vol. 9, Iss. 5 Virtual Journal for Biomedical Optics

Emmi Kantola, Tomi Leinonen, Sanna Ranta, Miki Tavast, and Mircea Guina, "High-efficiency 20 W yellow VECSEL," Opt. Express 22, 6372-6380 (2014)

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