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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 45, Iss. 11 — Apr. 10, 2006
  • pp: 2495–2498

Low-threshold self-starting femtosecond Ti:sapphire laser

Weijun Ling, Yulei Jia, Jinghua Sun, Zhaohua Wang, and Zhiyi Wei  »View Author Affiliations


Applied Optics, Vol. 45, Issue 11, pp. 2495-2498 (2006)
http://dx.doi.org/10.1364/AO.45.002495


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Abstract

A low-threshold self-starting Kerr-lens mode-locked Ti:sapphire laser is demonstrated that uses a tight-focusing cavity design in conjunction with a semiconductor saturable- absorber mirror (SESAM). With 3 % and 12 % output couplers, we achieve mode-locking thresholds as low as 390 and 600   mW , respectively. Stable femtosecond laser pulses with average power of 114   mW are generated at a pump power of 1.2   W , which corresponds to a typical duration of 17   fs and bandwidth of 47   nm . Mode-locking operation is achieved in a pump power range of 600   mW to 4.8   W at an output coupling of 12 % ; the advantages of using a SESAM for low-power mode-locking operation are demonstrated.

© 2006 Optical Society of America

OCIS Codes
(140.3590) Lasers and laser optics : Lasers, titanium
(140.4050) Lasers and laser optics : Mode-locked lasers
(320.0320) Ultrafast optics : Ultrafast optics
(320.7090) Ultrafast optics : Ultrafast lasers

History
Original Manuscript: January 7, 2005
Revised Manuscript: May 20, 2005
Manuscript Accepted: October 27, 2005

Citation
Weijun Ling, Yulei Jia, Jinghua Sun, Zhaohua Wang, and Zhiyi Wei, "Low-threshold self-starting femtosecond Ti:sapphire laser," Appl. Opt. 45, 2495-2498 (2006)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-45-11-2495

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