新型透射式全息窄带带阻滤光器的光谱特性分析  

Analysis of Spectral Properties of Novel Holographic Transmission Notch Filter

作　　者：黄翀[1] 欧阳艳东[1] 吴建宏[2] 余云鹏[1] 林舜辉[1] 

机构地区：[1]汕头大学物理系,广东汕头515063 [2]苏州大学信息光学工程研究所,江苏苏州215006

出　　处：《光谱学与光谱分析》2005年第4期637-638,共2页Spectroscopy and Spectral Analysis

基　　金：广东省科委和汕头大学校基金会资助项目

摘　　要：滤光器在光谱学、光学测量和激光物理中有着极其重要的应用。全息滤光器是一种新型滤光器,特别是利用重铬酸明胶(DCG)记录的全息透射式窄带滤光器,其主要特点为对主谱线有很窄的带宽。文章主要用紫外 可见分光光度计测定用DCG记录的透射式全息窄带带阻滤光器的光谱特性,测量结果分析表明,滤光器在可见光区域(40 0～80 0nm)对其中心波长的相对透射率小于2 % ,其他谱线的相对透射率大于85 %。且滤光器有较窄的带宽,其半宽度小于12nm ,十分之一宽度小于15nm。对氩离子激光(Ar+ )主谱线5 14 5nm有优良的滤光特性。Optical filter has extremely important applications in spectroscopy, optical measurement and laser physics. Holographic filter, especially the transmission volume holographic notch filters using dichromate gelatin (DCG), is a new kind of filter with the main characteristic of a very narrow bandwidth. In this paper, measurements were carried out on the spectral properties of this transmission volume holographic notch DCG filter using an ultraviolet-visible transmittance spectrometer. The experimental results show that the relative transmittance of main spectrum of this filter is less than 2% in the visible region between 400 and 800 nm, and the relative transmittance of other spectra are more than 85%. Moreover, the filter has a narrow bandwidth with a half-bandwidth less than 12 nm, and a 1/10 width of the bandwidth less than 15 nm. These results indicate that this new kind of filter has an excellent filter characteristic to the main spectrum of Ar+ laser at the wavelength of 514.5 nm.

关 键 词：透射式 全息 特性分析 带阻 紫外-可见分光光度计 窄带滤光器 重铬酸明胶 氩离子激光 激光物理 光学测量 主要特点 光谱特性 中心波长 可见光区 滤光特性 透射率 光谱学 谱线 分析表 半宽度 记录 带宽 

分 类 号：O438[机械工程—光学工程] TN16[理学—光学]