Continuously tunable, injection-seeded β-barium borate optical parametric oscillator: Spectroscopic applications

Abstract
Simple spectroscopic control of a β‐barium borate optical parametric oscillator is achieved by seeding at its visible signal wavelength with light from a tunable pulsed dye laser. This yields continuously tunable narrowband infrared output at the corresponding idler wavelength. The spectroscopic potential of this device is demonstrated by recording photoacoustic spectra of the near‐infrared (ν1+2ν351) band of acetylene gas.