Doppler-free infrared-acoustic spectroscopy using color center lasers

Abstract A single mode widely tunable color center laser has been applied to obtain Doppler-free infrared-acoustic spectra of hydrogencyanide gas. Saturated-absorption sub-Doppler spectroscopy of the R(13) and R(16) v 3 HCN transitions are reported using small-volume non-resonant photoacoustic detectors.