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Optics Letters

Optics Letters


  • Vol. 36, Iss. 10 — May. 15, 2011
  • pp: 1896–1898

Internal resonantly enhanced frequency doubling of continuous-wave fiber lasers

R. Cieslak and W. A. Clarkson  »View Author Affiliations

Optics Letters, Vol. 36, Issue 10, pp. 1896-1898 (2011)

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In this Letter we describe a simple method for frequency doubling in high-power CW fiber lasers that offers the prospect of very high conversion efficiency and high power in the visible wavelength regime. Our approach is based on second harmonic generation in an enhancement resonator within the fiber laser cavity and does not require active cavity length stabilization. This technique has been applied to a cladding-pumped Yb-doped fiber laser to generate 19 W of linearly polarized CW green output at 540 nm , with excellent temporal stability for 90 W of absorbed diode pump power at 975 nm . The prospects for further improvement in performance with respect to conversion efficiency and output power are considered.

© 2011 Optical Society of America

OCIS Codes
(140.3410) Lasers and laser optics : Laser resonators
(140.3480) Lasers and laser optics : Lasers, diode-pumped
(140.3510) Lasers and laser optics : Lasers, fiber
(140.7300) Lasers and laser optics : Visible lasers
(140.3515) Lasers and laser optics : Lasers, frequency doubled
(140.3615) Lasers and laser optics : Lasers, ytterbium

ToC Category:
Lasers and Laser Optics

Original Manuscript: March 4, 2011
Revised Manuscript: April 15, 2011
Manuscript Accepted: April 16, 2011
Published: May 13, 2011

R. Cieslak and W. A. Clarkson, "Internal resonantly enhanced frequency doubling of continuous-wave fiber lasers," Opt. Lett. 36, 1896-1898 (2011)

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