Division by 3 of optical frequencies by use of difference-frequency generation in noncritically phase-matched RbTiOAsO(4).
A new scheme for coherently connecting optical frequencies in a 3:1 ratio has been demonstrated. To phase lock a Nd:YAG laser at 1064 nm with a CO overtone laser at 3192 nm, we generated their difference frequency in RbTiOAsO(4) (RTA) and beat it against the second harmonic of 3192 nm that was generated in AgGaSe(2).
Pfister
O
O
Mürtz
M
M
Wells
J S
JS
Hollberg
L
L
Murray
J T
JT