发明授权
US5856869A Distributed bragg reflector diode laser for Raman excitation and method
for use
失效
用于拉曼激发的分布式布拉格反射二极管激光器和使用方法
- 专利标题： Distributed bragg reflector diode laser for Raman excitation and method for use
- 专利标题（中）： 用于拉曼激发的分布式布拉格反射二极管激光器和使用方法
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申请号： US657481申请日： 1996-05-29
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公开(公告)号： US5856869A公开(公告)日： 1999-01-05
- 发明人: John B Cooper , Philip E. Flecher , William T. Welch
- 申请人： John B Cooper , Philip E. Flecher , William T. Welch
- 申请人地址： KY Ashland
- 专利权人： Ashland Inc
- 当前专利权人： Ashland Inc
- 当前专利权人地址： KY Ashland
- 主分类号： G01N21/65
- IPC分类号： G01N21/65 ; G01N33/28 ; G01J3/44
摘要：
A distributed Bragg reflector (DBR) diode laser is used as excitation source for fiber optic Raman spectroscopy utilizing charge coupled device (CCD) detection and an image-corrected spectrograph. The DBR diode laser is superior to index guided diode lasers (Fabry-Perot) for elimination of mode hopping, elimination of frequency hysteresis as a function of both temperature and current changes, and reduction in laser broadband emission. These advantages allow the DBR laser to be used in industrial process control applications which are too demanding for index guided diode lasers.
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