A two crystal arrangement to fight efficiency saturation in cross-polarized wave generation.
We describe a method that overcomes the observed saturation effect in cross polarized wave (XPW) generation. The previously reported internal efficiencies for XPW generation are known to be limited to around 15% whatever the length of the nonlinear medium and/or the input intensity values are. At the opposite, the theoretical limit had been estimated to be close to 25%. Here we show that using two thin BaF(2) crystals separated at optimum distance the saturation level of XPW generation efficiency can be drastically increased. An internal efficiency of 30% is demonstrated experimentally using two BaF(2) crystals.
Jullien
A
A
Albert
O
O
Chériaux
G
G
Etchepare
J
J
Kourtev
S
S
Minkovski
N
N
Saltiel
S M
SM