Fundamental loss mechanisms of the spin-flip Raman laser

The authors have observed striking minima in the spectrum of the output power against magnetic field of the InSb spin-flip Raman laser near 10.6 mu m. These minima, which occur in the Stokes, anit-Stokes and double Stokes emissions, are attributed to harmonic cyclotron resonance absorption of the Stokes scattered radiation in the InSb crystal. Independent studies of the transmission of the sample as a function of magnetic field support this interpretation.