High-average-power mid-infrared ZnGeP2 optical parametric oscillator with a wavelength-dependent polarization rotator.
A wavelength-dependent polarization rotator is used to transform the orthogonal polarizations of the signal and idler of a near-degenerate type II KTP optical parametric oscillator (OPO) into a common polarization state. This common polarization allows a single ZnGeP2 OPO to fully utilize the 2 microm signal and idler KTP OPO outputs in a mid-IR conversion. The simple design of the wavelength-dependent polarization rotator yields a compact source that simultaneously generates four mid-JR wavelengths collinearly with a total mid-IR average power of 5.5 W at a >15 kHz pulse repetition rate.
Phua
P B
PB
DSO National Laboratories, 20, Science Park Drive, S118230 Singapore. ppohboon@alum.mit.edu
Tan
B S
BS
Wu
R F
RF
Lai
K S
KS
Chia
Lindy
L
Lau
Ernest
E