消气剂在氦-氖激光器中的应用

来源 :中国激光 | 被引量 : 0次 | 上传用户:robbieqzl
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
其他文献
We demonstrate a hybrid laser with a low intrinsic linewidth of 34.2 Hz and a high fiber-coupled output power of 11.7 dBm, by coupling a
期刊
A real-time intelligent fiber-optic perimeter intrusion detection system (PIDS) based on the fiber Bragg grating (FBG) sensor network is presented in this paper. To distinguish the effects of different intrusion events, a novel real-time behavior impact c
期刊
This Letter proposes a high bit-depth coding method to improve depth map resolution and render it suitable to human-eye observation in 3D range-intensity correlation laser imaging. In this method, a high bit-depth CCD camera with a nanosecond-scaled gated
We present an extra processing added to conventional least square (LS) channel estimation to further improve its performance in coherent optical orthogonal frequency division multiplexing (CO-OFDM) system. The influence of noise, chromatic dispersion and
期刊
1960年,梅曼博士研制出红宝石激光器。经过60年的发展,激光在社会生活的各个领域发挥着重要的作用,成为日常生活、工业生产、应用研究中的重要工具。激光加工技术是指通过激光与物质的相互作用,改变材料的物态、成分、组织、应力等性质的技术,具有应用对象广泛、非接触加工、尺寸控制能力强、无污染等特点。典型的激光加工技术包括激光去除加工、激光焊接、激光表面改性、激光3D打印、激光复合加工等。目前,激光加工技术已应用于国防、航天、信息、生物医疗等领域。
期刊
报道了用一束二倍频Nd:YAG激光同步抽运的脉冲染料激光系统,e型电子枪,铀原子束装置以及利用在单原子检测技术基础上发展起来的共振电离光谱和飞行时间质谱同时测量的技术,测量铀原子激发态吸收截面的饱和吸收方法。此法具有相当高灵敏度、高分辨率和强选择性的特点。
飞秒光学参量振荡器(OPO)能产生从紫外到中远红外波段的可调谐飞秒激光脉冲,在频率计测、生物医学、大气探测、宽带通信及国防等领域有着广泛的应用。对飞秒钛宝石激光器同步抽运OPO进行了研究,相继实现了波长稳定在1053 nm的高功率飞秒OPO运转。在此基础上,进一步研究了高功率掺镱全固体飞秒激光器同步抽运OPO。结合国内外飞秒OPO的研究进展,对未来全固态飞秒激光器同步抽运OPO的发展进行了展望。
A novel hand vein recognition algorithm is developed based on multi-resolution wavelet analysis. The texture feature of hand vein can be extracted by three-level wavelet decomposition. Furthermore, K-nearest neighbor (KNN) with support vector machines (SV