Wavelength conversion method and wavelength conversion element
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United States of America Patent
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May 15, 2007
Grant Date -
Jun 2, 2005
app pub date -
Sep 9, 2004
filing date -
Nov 27, 2003
priority date (Note) -
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Abstract
An ultraviolet laser is provided that increases the conversion efficiency of laser beams when harmonics having wavelengths of less than 355 nm are generated by converting laser beams with a wavelength conversion element made of a single crystal of lithium tetraborate. A wavelength conversion element is heated and controlled to a specific temperature (for example, 200.degree. C.) within a temperature range of 200 to 450.degree. C. with a predetermined temperature precision.
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