太阳光泵浦固体激光工作物质的研究
he study of active medium for solar-pumped solid-state lasers
本文以太阳光泵浦的固体激光器为研究背景，探讨了适合太阳光泵浦的固体激光器工作物质的选择。用matlab对太阳光谱的现有数据进行了三次样条插值运算，将其中0.25—2μm波段细化为间隔1nm的1751个光谱带，建立了太阳光谱的局部精细离散化模型。应用此模型，并结合红宝石、Nd:YAG、Yb:YAG、Nd:YVO4、Cr:Nd:GSGG、掺Nd3+的光学陶瓷和掺Yb3+的石英光纤等激光介质的吸收光谱，进行了太阳光谱与激光介质吸收谱的匹配分析。得出各激光介质所吸收的能量占太阳常数的百分比分别为24.51%，15.98%，2.35%，6.46%，46.52%，9.51%，8.19%。同时，在假设谐振腔长10cm，输出镜反射率98%，其他损耗不计的情况下，计算了各介质的阈值泵浦功率体密度，再综合以上激光介质的材料热特性，从而选取对太阳光能量吸收大且阈值低，热特性好的介质作为太阳光泵浦的固体激光器的工作物质。
he properties of several solid active material for solar pumped lasers are studied. We use Matlab software to process solar spectrum with cubic spline interpolation. The spectrum from 0.25μm to 2μm are divided into 1751 pieces with the interval of 1nm. A local discrete model of solar spectrum is set up. With this model, we calculated the percentage of the solar energy which can be absorbed by different laser material. The calculation results show that the absorptions of the solar energy by Ruby, Nd:YAG, Yb:YAG, Nd:YVO4, Cr:Nd:GSGG, Nd3+-doped glass ceramic and Yb3+-doped silica fiber are 24.51%，15.98%，2.35%，6.46%，46.52%，9.51%，8.19%, respectively. Assuming the length of the cavity is 10cm and the reflectivity of output mirror is 98%, we calculate the threshold of pumped power density of each active medium. Taking the thermal property of each medium into consideration, we choose the most suitable medium with high couple efficiency, low threshold and well thermal property for solar-pumped solid state laser.
赵长明、赵彬、杨苏辉、何建伟
物理学光电子技术材料科学
太阳光泵浦，光谱分析，固体激光器，工作物质
solar-pumpedspectrum analysissolid state laseractive medium
赵长明,赵彬,杨苏辉,何建伟.太阳光泵浦固体激光工作物质的研究[EB/OL].(2006-11-17)[2025-08-11].http://www.paper.edu.cn/releasepaper/content/200611-490.点此复制
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