High-efficiency parametric oscillation and spectral control in the red spectral region with periodically poled KTiOPO(4).
Narrow-linewidth optical pulses at wavelengths near 630 nm with 2.2-mJ energy were generated with 61% efficiency in a periodically poled KTiOPO(4) parametric oscillator pumped by a frequency-doubled Q -switched Nd:YAG laser. The tuning range was extended to 30 nm by a noncollinear elliptical pumping geometry. We demonstrate that by angular dispersion a noncollinear optical parametric oscillator can be used to control the spectral and spatial characteristics of the output signal beam.
V
V
Pasiskevicius
H
H
Karlsson
F
F
Laurell
R
R
Butkus
V
V
Smilgevicius
A
A
Piskarskas