Optically pumped cw InSb lasers for NO spectroscopy

Abstract
Tunable cw laser emission has been obtained near 5.3 μm from InSb samples at ∼10 K optically pumped with GaAs, Nd : YAG, and CO lasers. InSb laser thresholds have been determined as a function of incident pump wavelength and applied magnetic fields from 0 to 9.5 kOe. Temperature and magnetic field tuning have been utilized to obtain NO absorption spectra over a 10−cm−1 range.