Microwave modulated saturation spectroscopy

Abstract
By combining intermodulated fluorescence saturation spectroscopy with microwave optical double resonance, a new experimental laser spectroscopy technique, microwave modulated saturation (MMS) spectroscopy, has been developed. This technique has been used to simplify the complex 14N and proton hyperfine structure observed by saturation spectroscopy of NH2[110, J=3/2←220, J=5/2, ?2A1π (0,10,0) ←?2B1(0,0,0)]. This simplification made possible a complete assignment of the hyperfine energy levels. A population model of these experiments has been developed.