Increasing the birefringence of KTP and its isomorphs for type I

Details Increasing the birefringence of KTP and its isomorphs for type I Increasing the birefringence of KTP and its isomorphs for type I

1992-12-23

1994-05-10

Lee, John D.

Optical: systems and elements

Optical frequency converter

252584, G02F 135

Patent

active

053113527

ABSTRACT:
Method and device for wavelength conversion using type II phase matching are characterized by employing a crystal consisting essentially of doped MTiOXO.sub.4 (wherein M is K, Rb and/or Tl and X is P and/or As) containing Fe, Nb and/or Ta dopant in an amount, totalling at least about 100 ppm, effective to increase the n.sub.z -n.sub.x optical birefringence of the doped crystal at least about 0.001 compared to a crystal without the dopant. Generation of output waves of an optical birefringence higher than the highest corresponding optical birefringence of a crystal without the dopant is disclosed. Among the useful crystals are crystals consisting essentially of doped MTiOXO.sub.4 containing at least about 100 ppm Ta.

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