Noncritically phase-matched frequency conversion in Gd_xY_1–xCa_4O(BO_3)_3 crystal
- Masashi Yoshimura
- Hiroyuki Furuya
- TKT. Kobayashi
- K. Murase
- Yusuke Mori
- T. Sasaki
Optics Letters · 1999 · Optica Publishing Group
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Abstract
A nonlinear optical crystal YCa(4)O(BO(3))(3) (YCOB) is phase matchable for third-harmonic generation (THG) of a Nd:YAG laser by type I mixing between 1.064 and 0.532mum . By partial substitution of Gd for Y in YCOB, a solid solution Gd(x)Y(1-x)Ca(4)O(BO(3))(3) gradually changes the phase-matching angles of THG to (theta, ø)=(90( degrees ), 90 ( degrees )) . We present the properties of noncritically phase-matched THG in Gd(x) Y(1-x)Ca(4)O(BO(3))(3) (x=0.28) .