Pulsed injection-seeded optical parametric oscillator with low frequency chirp for high-resolution spectroscopy.
An injection-seeded optical parametric oscillator (OPO), based on periodically poled KTiOPO4 and pumped by a frequency-doubled, nanosecond-pulsed Nd:YAG laser, generates continuously tunable, single-longitudinal-mode, pulsed output at approximately 842 nm for high-resolution spectroscopy. Optical-heterodyne measurements show that the OPO frequency chirp increases linearly with detuning from the free-running (unseeded) OPO frequency and can be maintained as low as 10 MHz. Other factors affecting chirp are identified.
White
Richard T
RT
Centre for Lasers and Applications, Macquarie University, Sydney, NSW 2109, Australia.
He
Yabai
Y
Orr
Brian J
BJ
Kono
Mitsuhiko
M
Baldwin
K G H
KG