光学精密工程2018，Vol.26Issue(2)：300-306,7.DOI:10.3788/OPE.20182602.0300
角度位置自动识别的红外折射率测量
Measurement of infrared refractive index based on angle location automatic recognition
摘要
Abstract
In order to determine the refractive index of bulk glasses in the infrared band,a refractive index measurement system based on the optical auto-collimation principle is proposed.We use a liq-uid-nitrogen-cooled mercury telluride detector and a special optical architecture to collect high-resolu-tion light intensity information.The angle information is converted to digital information by a data ac-quisition card.A precision stepper motor drive control system is used to synchronize the light intensity signal and the position signal.The software automatically determines the peak position of the light in-tensity,and automatically calculates the refractive index of the sample.T he refractive indices of the Ge20Sb15Se65,Ge28Sb12Se60,As2S3and As2Se3commercial chalcogenide glasses were measured at 3.39 μm and 4.8 μm.The standard deviation of the refractive index measurement system is 10-3with a measurement uncertainty of 0.002 9.The system can be useful to quickly and accurately measure the refractive index of bulk materials in the infrared band.关键词
红外光学材料/硫系玻璃/折射率测量/自准直法Key words
infrared optical materials/chalcogenide glass/refractive index measurement/autocollima-tion refractometric method分类
信息技术与安全科学引用本文复制引用
刘永兴,戴世勋,张培晴,吴越豪,胡向平..角度位置自动识别的红外折射率测量[J].光学精密工程,2018,26(2):300-306,7.基金项目
国家重点研发计划资助项目(No.2016YFB0303800) （No.2016YFB0303800）
国家基金委重大科学仪器项目(No.61627815) （No.61627815）
宁波大学王宽诚幸福基金 （）
