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  • Conference on Lasers and Electro-Optics
  • OSA Technical Digest (Optica Publishing Group, 1992),
  • paper CThN1

Eighty-five percent efficiency for cw frequency doubling from 1.08 to 0.54 μm

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Abstract

Potassium titanyl phosphate (KTP) is widely utilized for frequency doubling Nd:YAG lasers at 1.064 μm. One problem with the use of KTP at this wavelength is that phase matching is possible only by Type II angle, tuning, so that walk-off of the ordinary and extraordinary beams inside the crystal limits its utility in situations involving high finesse resonators. However, by working at 1.08 μm with an n-cut KTP crystal, one can achieve Type II noncritical phase matching,1 thus eliminating walk-off problems.

© 1992 Optical Society of America

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