High-efficiency and economical solar-energy-pumped laser with Fresnel lens and chromium codoped laser medium
High-efficiency and economical solar-energy-pumped laser with Fresnel lens and chromium codoped laser medium
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DOI：
10.1063/1.2753119
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发表时间：
2007-06
影响因子：
4
通讯作者：
T. Yabe;T. Ohkubo;S. Uchida;K. Yoshida;M. Nakatsuka;Takayuki Funatsu;A. Mabuti;A. Oyama;K. Nakagawa;Takehiro Oishi;Kazuya Daito;B. Behgol;Yuichirou Nakayama;Makoto Yoshida;S. Motokoshi;Yoshitaka Sato;Choijil Baasandash
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文献类型：
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作者：
T. Yabe;T. Ohkubo;S. Uchida;K. Yoshida;M. Nakatsuka;Takayuki Funatsu;A. Mabuti;A. Oyama;K. Nakagawa;Takehiro Oishi;Kazuya Daito;B. Behgol;Yuichirou Nakayama;Makoto Yoshida;S. Motokoshi;Yoshitaka Sato;Choijil Baasandash
采用Cr共掺Nd：钇铝石榴石陶瓷和菲涅耳透镜对自然光进行聚焦，获得了11%~ 14%的斜率效率的太阳能泵浦激光器。用1.3m ~ 2菲涅耳透镜获得了24.4W的激光输出。单位面积太阳光的最大输出为18.7W scinm 2，这是2.8倍，比以前的结果与镜子收集器。Cr ~（3+）离子的利用使太阳光谱中的Nd ~（3+）离子得到了有效的吸收和能量转移。测量了掺Cr和不掺Cr激光介质在不同泵浦波长下1064 nm处的荧光产额，预测了激光输出比太阳光增强1.8倍。
The authors achieved 11%–14% slope efficiency of solar-pumped laser by Cr-codoped Nd:yttrium aluminum garnet ceramic and Fresnel lens focusing from natural sunlight. The laser output of 24.4W was achieved with 1.3m2 Fresnel lens. The maximum output for unit area of sunlight was 18.7W∕m2, which is 2.8 times larger than previous results with mirror collector. The utilization of Cr3+ ion enabled efficient absorption and energy transfer to Nd3+ ion of solar spectrum. The fluorescence yield at 1064nm for various pumping wavelengths was measured both for Crcodoped and nondoped laser media, and 1.8 times enhancement of laser output from sunlight is predicted.