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High-power 457-nm light source by frequency doubling of an amplified diode laser.

Authors
  • Ruseva, Valentina
  • Hald, Jan
Type
Published Article
Journal
Applied optics
Publication Date
Sep 20, 2003
Volume
42
Issue
27
Pages
5500–5507
Identifiers
PMID: 14526837
Source
Medline
License
Unknown

Abstract

We demonstrate the generation of 150-mW blue coherent single-mode radiation at 457 nm in a compact and inexpensive setup. The light is generated by frequency doubling the radiation of a master oscillator power amplifier (MOPA) system in an enhancement cavity with a potassium niobate (KNbO3) crystal. The MOPA consists of a 914-nm single-mode diode laser and a broad-area diode laser (BAL) as the amplifier. The BAL is a multimode laser with a specified wavelength of 938 nm. Sufficient gain at 914 nm is obtained by antireflection coating the BAL front surface and by cooling it to -10 degrees C.

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