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Optica Publishing Group
  • Conference on Lasers and Electro-Optics
  • OSA Technical Digest (Optica Publishing Group, 2002),
  • paper CMS6

200 mW of Blue Light Generated by Intracavity Frequency Doubling of a Diode-Pumped Nd:YAG Laser Operating at 938.5 nm

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The 4F3/24I9/2 transition at 946 nm in Nd:YAG attracts particular attention as it allows generation of blue light by frequency doubling. However, efficient lasing on this transition (R1 → Z5) is considerably more difficult to achieve than on the 1064 nm line. The problems with the 946 nm transition are its quasi-three-level nature and a very small stimulated-emission cross section. There is another, even weaker 4F3/24I9/2 transition at 938.5 nm (R2 → Z5).1 An output power exceeding 1 W was first reported as late as 1996.2 However, generation of blue light by frequency doubling of this laser line has not been reported yet.

© 2002 Optical Society of America

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