拉曼谱仪新聚光会集系统研制及用于电化学时间分辨研究的初步结果  

New Collection Lens System of Raman Spectrometer for Electrochemical Time-resolved Raman Measurements

作　　者：陈捷光[1] 李五湖[1] 廖远琰 田中群 

机构地区：[1]厦门大学科学仪器工程系,厦门大学固体表面物理化学国家重点实验室,厦门大学化学系

出　　处：《光散射学报》1996年第1期54-58,共5页The Journal of Light Scattering

基　　金：国家自然科学基金;厦门大学固体表面物理化学国家重点实验室资助

摘　　要：为了进一步提高拉曼谱仪检测灵敏度，对Ｓ３０００型拉曼光谱仪的聚光会集系统进行了重新设计，新设计的聚光会集系统可以显著提高拉曼散射光的光强，理论上收集光强增大９倍。采用配制该聚光会聚系统和以光学多道分析仪（ＯＭＡ）作为信号检测器的拉曼谱仪，并采用分区间录谱方法进行了电化学现场时间分辨测量，获得了质量较高的时间分辨值为５ｍｓ的ＳＥＲＳ谱图，该时间分辨值目前尚未见报道。以Ａｇ／ＳＣＮ－为体系初步结果表明：提高检测灵敏度将有助于从分子水平研究电化学界面动态过程．in order to improve detection sensitivity, the collection lens system of the 53000 Raman spectrometer has been redesigned. With a special homemade collection lens system, the intensity of Raman scattering light can be improved considerably, up to a factor of nine theoretically. By selecting the 'Fastmode' of 'single Region' sub-menu from the 'Scan Mode'menu in the opticalmulitichannel analyzer (OMA), the time resolved SERS spectrum with 5mstime resolution has been obtained. This fast time resolution has not been previously reported. It is shown that the improving of the detection sensitivity will be helpful to the studies on dynamic process of electrochemical interface at molecular level.

关 键 词：研制 聚光会集系统 拉曼光谱仪 时间分辨 电化学 系统设计 检测灵敏度 

分 类 号：O646[理学—物理化学] O657.37[理学—化学]