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Optics Letters

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  • Vol. 37, Iss. 13 — Jul. 1, 2012
  • pp: 2610–2612

Lensless intracavity focusing in a passively Q-switched all-fiber laser using the mode-field-area mismatch

Tzong-Yow Tsai, Zhi-Cheng Lee, Hong-Xi Tsao, and Shih-Ting Lin  »View Author Affiliations


Optics Letters, Vol. 37, Issue 13, pp. 2610-2612 (2012)
http://dx.doi.org/10.1364/OL.37.002610


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Abstract

Intense lensless intracavity focusing in a saturable absorber Q-switched all-fiber laser resonator by use of loss arrangement and mode-field-area mismatch between the fibers is investigated for the first time. The intracavity power distribution was related to the locations and values of the cavity losses as the saturable absorption loss, the reflection loss of the output coupler, and the splicing loss between the gain fiber and the absorber fiber. With a mode-field-area mismatch and a reduced splicing loss with the gain fiber, a power density in the absorber fiber was achieved that was 11.9 times higher than that in the gain fiber.

© 2012 Optical Society of America

OCIS Codes
(140.3410) Lasers and laser optics : Laser resonators
(140.3510) Lasers and laser optics : Lasers, fiber
(140.3540) Lasers and laser optics : Lasers, Q-switched

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: April 11, 2012
Revised Manuscript: May 2, 2012
Manuscript Accepted: May 6, 2012
Published: June 22, 2012

Citation
Tzong-Yow Tsai, Zhi-Cheng Lee, Hong-Xi Tsao, and Shih-Ting Lin, "Lensless intracavity focusing in a passively Q-switched all-fiber laser using the mode-field-area mismatch," Opt. Lett. 37, 2610-2612 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-13-2610


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