Kuo-Shin Huang, Kai-Wei Chang, Ko-Fan Tsai, T. Liu, Ching-Huang Lin
{"title":"Far Field Intensity Measurement for Lasers","authors":"Kuo-Shin Huang, Kai-Wei Chang, Ko-Fan Tsai, T. Liu, Ching-Huang Lin","doi":"10.1109/iWEM49354.2020.9237407","DOIUrl":null,"url":null,"abstract":"The measurements of be am size, divergence angle and beam quality depend on accurate assessment of intensity distribution. In this paper, we utilize image projection method to get intensity distribution of lasers. Lasers with different divergence angles (VCSEL, 24degrees/He-Ne laser, 0.057degrees) are used to be two different cases with respect to large and small divergence angles. The spots are projected on different rotating diffuser films. In the case of VCSEL, we found that the film selection is critical in acquiring correct values when ISO 11146-1:2005 is adopted.","PeriodicalId":201518,"journal":{"name":"2020 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2020-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2020 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/iWEM49354.2020.9237407","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
The measurements of be am size, divergence angle and beam quality depend on accurate assessment of intensity distribution. In this paper, we utilize image projection method to get intensity distribution of lasers. Lasers with different divergence angles (VCSEL, 24degrees/He-Ne laser, 0.057degrees) are used to be two different cases with respect to large and small divergence angles. The spots are projected on different rotating diffuser films. In the case of VCSEL, we found that the film selection is critical in acquiring correct values when ISO 11146-1:2005 is adopted.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
