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Optics Letters

Optics Letters


  • Vol. 36, Iss. 15 — Aug. 1, 2011
  • pp: 2797–2799

Femtosecond laser pumped by high-brightness coherent polarization locked diodes

Purnawirman and P. B. Phua  »View Author Affiliations

Optics Letters, Vol. 36, Issue 15, pp. 2797-2799 (2011)

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We demonstrate, for the first time to our knowledge, the use of a coherent polarization locked diode as the high-brightness pump source for a femtosecond laser. Four diode emitters are coherently locked to produce more than 5 W linearly polarized, narrow linewidth, and single-lobed pump beam. This gives > 10 × brightness improvement over the conventional diode array. The diode beam is then used to pump a Yb:KYW laser to obtain 2 W output with 57% slope efficiency in cw laser operation. By using a saturable absorber mirror, we achieved cw mode-locking operation with a 177 fs pulse width at an average power of 0.55 W .

© 2011 Optical Society of America

OCIS Codes
(140.2010) Lasers and laser optics : Diode laser arrays
(140.5560) Lasers and laser optics : Pumping
(140.7090) Lasers and laser optics : Ultrafast lasers
(140.3298) Lasers and laser optics : Laser beam combining

ToC Category:
Lasers and Laser Optics

Original Manuscript: June 8, 2011
Manuscript Accepted: June 20, 2011
Published: July 20, 2011

Purnawirman and P. B. Phua, "Femtosecond laser pumped by high-brightness coherent polarization locked diodes," Opt. Lett. 36, 2797-2799 (2011)

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