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Chinese Optics Letters

Chinese Optics Letters

| PUBLISHED MONTHLY BY CHINESE LASER PRESS AND DISTRIBUTED BY OSA

  • Vol. 3, Iss. 11 — Nov. 10, 2005
  • pp: 644–646

Contrastive study of two SESAMs for passive mode-locking in Nd:YVO4 laser with low pump power

Yang Liu, Liqun Sun, Yonggang Wang, Qian Tian, Xiaoyu Ma, and Zhigang Zhang  »View Author Affiliations


Chinese Optics Letters, Vol. 3, Issue 11, pp. 644-646 (2005)


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Abstract

Two semiconductor saturable absorber mirrors (SESAMs), of which one is coated with 50% reflection film on the top and the other is not, were contrastively studied in passively mode-locked solid-state lasers which were pumped by low output power laser diode (LD). Experiments have shown that reducing the modulation depth of SESAM by coating partial reflection film, whose reflectivity is higher than that between SESAM and air interface, is an effective method to get continuous wave (CW) mode-locking instead of Q-switched mode-locking (QML) in low power pumped solid-state lasers. A simple Nd:YVO4 laser pumped by low power LD, in which no water-cooling system was used, could obtain CW mode-locking by the 50% reflector coated SESAM with average output power of ~20 mW.

© 2005 Chinese Optics Letters

OCIS Codes
(140.3580) Lasers and laser optics : Lasers, solid-state
(140.4050) Lasers and laser optics : Mode-locked lasers
(160.6000) Materials : Semiconductor materials

Citation
Yang Liu, Liqun Sun, Yonggang Wang, Qian Tian, Xiaoyu Ma, and Zhigang Zhang, "Contrastive study of two SESAMs for passive mode-locking in Nd:YVO4 laser with low pump power," Chin. Opt. Lett. 3, 644-646 (2005)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-3-11-644

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