Mj. Johnson et al., CONTINUOUSLY TUNABLE NARROW-BAND OPERATION OF AN INJECTION-SEEDED RING-CAVITY OPTICAL PARAMETRIC OSCILLATOR - SPECTROSCOPIC APPLICATIONS, Optics letters, 20(11), 1995, pp. 1277-1279
A pulsed beta-barium berate optical parametric oscillator is injection
seeded by cw diode lasers, yielding continuously tunable narrow-band
output at its idler wavelength. A notable feature of this optical para
metric oscillator is that it comprises a simple passive ring cavity wi
th no active control of path length as the seed wavelength is scanned.
We demonstrate this by recording Doppler-limited photoacoustic absorp
tion spectra of acetylene gas and Doppler-free two-photon fluorescence
spectra of rubidium vapor.