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中国激光1989年第16卷第12期 目录
【出 处】
:
中国激光
【发表日期】
:
1989年16期
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Eye-feature diagnosis is a time-honored method for studying many diseases in traditional Chinese medicine. There is a close relationship between eye-feature and viscera, and eye-feature is a reflection of visceral health status. Commercially used ophthalm
本文以“一维热流活塞模型”为基础,推导出薄膜光声表达式,光声信号的幅值正比于吸收率.测量了透明基底上光学薄膜的光声吸收谱,实验结果与理论一致.尤其是测量弱吸收薄膜的吸收谱时,具有较高的灵敏度和实用性.
We have demonstrated an all-fiber passively mode locked erbium-doped fiber laser (EDFL) based on graphene–polyvinyl-alcohol film. By watchfully adjusting the polarization controller, two different polarization attractors, including polarization locked vec
The fabricated gratings used for an 800-nm compressed laser pulse have more than 90% diffraction efficiency in the –1st order for TE polarization within 760–860 nm, and the maximum value is 94.3%. The laserinduced damage threshold (LIDT) of the gratings i
选用4种不同形态碳元素样品(石墨、碳酸钙、无水对氨基苯磺酸和煤)进行激光诱导击穿光谱(LIBS)实验。通过改变激发环境氛围(大气、氮气和氩气),分析激发环境氛围对不同形态碳元素的原子发射光谱和分子发射光谱激发机制的影响,进而实现对不同形态碳元素的LIBS特性研究。研究结果表明,不同形态碳元素原子发射光谱C I的变化规律为在氩气中最强,在大气中次之,在氮气中最弱。而不同激发环境中,分子光谱C2和CN的变化规律与原子光谱C I的变化规律存在差异,这主要取决于样品本身的结构差异和等离子体与周围环境的相互作用机制
This paper optimizes the buried channel charge-coupled device (BCCD) structure fabricated by complementary metal oxide semiconductor (CMOS) technology. The optimized BCCD has advantages of low noise, high integration and high image quality. The charge tra
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A low-noise photodetector is a basic tool for the research of quantum information processing. We present a specially designed low-noise photoelectric detector with a bandwidth of 130 MHz, using a transimpedance amplification circuit. Based on the detailed
由于温度不同,气体密度亦不同,通过这种密度不同的气体的光束,其折射亦发生变化。如春季或夏季地面上的水蒸气就是常见的例子。借用这种自古以来就为人们所熟知的大自然现象来研究与以往的固体光学透镜具有相同作用的气体透镜的工作,最近正在日本进行。不久前在东京召开的四个电气学会的联合大会上,由同志社大学和北海道大学发表了他们的部分成果;去年秋天,东京工业大学也发表了一些新的设想,在国外也引起了巨大的反应。这些气体透镜的特征是,象固体透镜一样,在折射面上没有反射和吸收。看来,用在使用激光的光通讯中作为透镜,可能是最理想
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