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Optica Publishing Group
  • Conference on Lasers and Electro-Optics
  • OSA Technical Digest (Optica Publishing Group, 1989),
  • paper CPD11

Efficient Frequency Doubling of GaAlAs Laser Diode Array Emission in Monolithic KNbO3 Cavity

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Abstract

Direct frequency doubling of laser diode output promises to be the most efficient method of generating coherent blue emission. Because of low fundamental power the second-harmonic generation (SHG) and conversion efficiencies were low with single stripe GaAlAs laser diode pumps. Recently1 however, 0.72 mW of 421-nm radiation and 0.27% conversion were achieved by single pass doubling of 270 mW diffraction limited emission from an injection-locked 20-element array in KNbO3 crystal,

© 1989 Optical Society of America

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