The paper describes the design, performance and illustrative spectroscopic applications of a high power, pulsed, injection seeded, narrow bandwidth and continuously tuneable optical parametric oscillator (OPO) based on two β-barium borate (BBO) nonlinear crystals. A ring cavity OPO was injection seeded with an external cavity diode laser in the spectral range 755-855 nm. The OPO generated high power transform limited nanosecond light pulses in this range and, simultaneously, at 606-667 nm. Spectral parameters of the OPO were investigated as a function of pump power for two different cavity lengths. A bandwidth of ∼120 MHz (0.004 cm-1) in the visible has been achieved with a 40-cm-long cavity. The potential of the OPO system is demonstrated by recording high resolution sub-Doppler spectra in the UV of PF and C3 radicals in a pulsed supersonic jet expansion.
|Number of pages
|Journal of Modern Optics
|Published - Apr 15 2002
|15th UK National Quantum Electronics and Photonics Conference - Glasgow, United Kingdom
Duration: Sep 3 2001 → Sep 6 2001