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Sc_x:Fe_y:Cu_z:LN晶体的生长及非挥发性全息存储的研究
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作者 刘兴 冷雪松 于晓艳 《人工晶体学报》 EI CAS CSCD 北大核心 2009年第2期367-371,共5页
本文首次采用Czochralski法生长优质的Scx:Fey:Cuz:LN(x=0,1%,2%,3%,3.5%,y=0.1%,z=0.06%)晶体。测试了晶体抗光致散射能力,以二波耦合光路测试晶体的衍射效率、写入时间和擦除时间,计算光折变灵敏度和动态范围。结果表明:Sc(2mol%):Fe:... 本文首次采用Czochralski法生长优质的Scx:Fey:Cuz:LN(x=0,1%,2%,3%,3.5%,y=0.1%,z=0.06%)晶体。测试了晶体抗光致散射能力,以二波耦合光路测试晶体的衍射效率、写入时间和擦除时间,计算光折变灵敏度和动态范围。结果表明:Sc(2mol%):Fe:Cu:LN和Sc(3mol%):Fe:Cu:LN晶体抗光致散射能力比Fe:Cu:LN晶体高两个数量级以上,Scx:Fey:Cuz:LN晶体的写入速度、光折变灵敏度和动态范围等全息存储性能优于Fe:LN晶体。首次采用氪离子激光(482.0nm,蓝光)作开关光,氦氖激光(632.8nm,红光)做记录光,以Sc:Fe:Cu:LN晶体作为双光子全息存储记录介质,实现了双光子全息存储固定(非挥发性全息存储)。 展开更多
关键词 Scx:Fey:Cuz:LN晶体 子全息存储 衍射效率 动态范围 光折变灵敏度
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Refractive Index and Strain Sensitivities of a Long Period Fiber Grating 被引量:2
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作者 Quandong Huang Yongqin Yu +4 位作者 Zhilong Ou Xue Chen Jishun Wang Peiguang Yan Chenlin Du 《Photonic Sensors》 SCIE EI CAS 2014年第1期92-96,共5页
A long period fiber grating (LPFG) fabricated upon the all-solid photonic bandgap fiber by CO2 laser irradiation was investigated, and its resonance wavelength was at 1335.76nm with a modulation depth of 15dB and a ... A long period fiber grating (LPFG) fabricated upon the all-solid photonic bandgap fiber by CO2 laser irradiation was investigated, and its resonance wavelength was at 1335.76nm with a modulation depth of 15dB and a 3-dB bandwidth of 2.6nm. We studied its strain, temperature, and index sensor characteristics, the strain sensitivity of 0.992 pm/m was obtained by using linear fit, and the relationship between the refractive index and wavelength obeyed the distribution of quadratic function. Also, we demonstrated its temperature response was relatively insensitive (21.51 pm/~C). 展开更多
关键词 Long period fiber grating strain sensors index sensors
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