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Optica Publishing Group
  • Conference on Lasers and Electro-Optics
  • OSA Technical Digest (Optica Publishing Group, 1996),
  • paper CFE3

Saturable Bragg reflector mode-locking of Cr4+:YAG laser pumped by a diode-pumped Nd:YVO4 laser

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Abstract

Mode-locked solid-state lasers with broadband gain have led to rapid advancements in the production of the ultrashort pulses. In 1991, Shestakov et al. reported the first room-temperature cw lasing of Cr4+:YAG1 in the 1550-nm telecommunications window of optical fiber. Kerr-lens mode-locking (KLM) of Cr4+:YAG has produced pulses as short as 46 fs.2,3 In this paper, we demonstrate self-starting passive femtosecond mode-locking of Cr4+:YAG using a nonlinear mirror called a saturable Bragg reflector (SBR). We pump the Cr4+:YAG, whose absorption band is centered around 1000 nm, with a diode-pumped Nd:YVO4 laser.4 We discuss the SBR mode-locking of this laser and compare with KLM techniques.

© 1996 Optical Society of America

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