2.1μm Co∶MgF_2脉冲激光器

2.1 μm Co∶MgF 2 Pulse Laser

报导了２１μｍＣｏ∶ＭｇＦ２激光器在室温下的实验结果，得到了０２７９Ｊ的２１μｍ激光，器件效率为１４５％测定了Ｃｏ浓度为３％（ｗｔ）的ＭｇＦ２晶体对１３４１４μｍ线的偏振吸收系数，测量结果表明，对该谱线π偏振和σ偏振的吸收系数分别为０８０４ｃｍ－１和０５１６ｃｍ－１．激光实验结果计算得到该晶体２１μｍ线的激光跃迁截面为２６１×１０－２１ｃｍ２．

The experimental results of 2 1 μmCo∶MgF 2 pulse laser operated at room temperature were reported in this paper. Output energy of 0 279 J at 2 1 μm has been obtained with slope efficiency of 14 5%. The polarized absorptive coefficients for 1 341 4 μm were measured for MgF 2 crysral doped with 3%(wt) Co 2+ . The absorptive coefficients of π and σ polarizations are 0 804 cm -1 and 0 516 cm -1 respectively for 1 341 4 μm line. The stimulated emission cross section for 2 1 μm line was calculated from laser experimental result to be 2 61×10 -21 cm 2.