Characteristics of n-Pb_<0.88>Sn_<0.12>Te Spin Flip Raman Laser Pumped by a TE CO_2 Laser

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Characteristic of n-Pb_<0.88>Sn_<0.12>Te spin-flip Raman (SFR) laser pumped by a TE CO_2 laser has been studied. For the laser cavity, a crystal with n_c=10^<17>cm^<-3> at 77 K and dimension of 5×4×3 mm^3 is used. The lasing threshold is 0.6 MW・cm^<-2> at the pump frequency of 10.54 μm. The Stokes frequency shift up to 100 cm^<-1> is obtained at magnetic field of 41 kG. The tuning rate is slightly dependent on magnetic field and the typical value is about 2.65 cm^<-1>・kG^<-1>. The resonance enhancement in the SFR gain is confirmed by the measurement of the pump wavelength dependence or the output power. The variation or the stores output power with magnetic field is tentatively understood in terms of magnetic field dependences of the resonance enhancement, the population difference in up and down spin sub-levels and the fundamental absorption loss of the pump light.
社団法人応用物理学会の論文
1980-06-05