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不含热池的11μm附近热带连续波CO2激光器实验研究
Experimental study of a hot-cell-free CW CO2 laser at 11μm wavelength region hot bands
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摘要: 报道了一种非流动传统型连续波凹面光栅选支CO2激光器,为了得到11μm附近的一些热带谱线输出,在不加CO2热吸收池的情况下,通过采用较大曲率半径的凹面闪耀光栅(闪耀波长10.6μm、曲率半径10m、刻线150mm-1)和适当地增加腔长(4.5m)来提高谐振腔的选支能力。除了得到常规带0001-[1000,0200]Ⅰ,ⅡR(56)至P(56)100多条谱线之外,还得到11μm附近其它谱线16条,其中包括0111-0310谱带7条、0011-1110谱带1条、同位素C13O2160001-1000谱线5条、C13O2180001-1000谱线3条。所有谱线的输出功率均在1.6W以上。Abstract: The purpose is to describe the design and the construction of a no-flow conventional CW CO2 laser with line selected by concave grating.In order to obtain the lines at 11μm wavelength region,a concave grating(150lines/mm,blazed at 10.6μm) with a 10m radius curvature and a longer cavity(4.5m) is employed to increase the resolution of the cavity without a hot CO2 absorption cell in the cavity.In this laser,besides more than 100 laser lines observed from R(56) to P(56) in the regular 0001-[1000,0200]Ⅰ,Ⅱ band,another 16 lines in 11μm wavelength region including 7 lines in the 0111-0310 band,1 line in the 0011-1110 band,5 lines in the isotope C13O2160001-1000 band and 3 lines in the isotope C13O2180001-1000 band,are also observed.The output power of every line is above 1.6W.
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