【摘要】 从甲烷气体相关光谱检测法对光源的要求出发，试制了几种不同参数的Ｔｍ（３＋）掺杂光纤，在实验上用７８８ｎｍ半导体激光器泵浦，测量了泵浦端出射的荧光光谱及总功率．在１．６７μｍ处荧光功率密度达到０．２５μＷ／ｎｍ，比用白炽灯作光源耦合多模光纤所得的结果高出８倍多，是一种较为理想的适用于甲烷气体检测的宽带光源。更多还原

【Abstract】 We produce several Tm￣(3+)-doped silica fibers with various parameters to satisfy the requirement of optical source for the methane gas detection using correlation spectroscopy.In the experiment the Tm￣(3+)-doped fiber is pumped by a 788 um semiconductor laser diode,and the fluorescence spectra and total output fluorescence power are measured.The result shows as large as 0.25 μ W/nm fluorescence a density at 1.67 μm,which is nearly 8 times larger than the previous result obtained by coupling white light source to a multimode fiber(50/125 μm),can be achieved.These results show the Tm￣(3+)-doped fiber pumped by laser diode can be made as a suitable broadband source for methane gas detection using correlation spectroscopy technology.更多还原