Design of spectrometer based on volume phase grating for near infrared range
Data(s) |
2004
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Resumo |
In order to design and fabricate a spectrometer for the infrared range widely used in the different applications, Volume Phase Grating (VPG) with. low Polarization Dependence Loss (PDL) and high efficiency has been adopted as the dispersion element. VPG is constructed by coating an optical substrate with a thin film of dichromated. gelatin and exposing the film to two mutually coherent laser beams to form index modulation. The diffraction efficiency for a VPG is governed by Bragg effects. The depth (d) and index modulation contrast of the grating structure control the efficiency at which the light is diffracted when the Bragg condition is satisfied. Gradient index lens with high performance and low aberration are used as collimating system instead of standard lens. The spot diagrams and MTF curve of the collimating lens are shown in the paper. The receive system is InCaAs photodiode (PD) array including 512 pixels with 25 mum pitch. The spectrum resolution of the spectrometer reaches to 0.2nm and wavelength accuracy is 40pm. In order to design and fabricate a spectrometer for the infrared range widely used in the different applications, Volume Phase Grating (VPG) with. low Polarization Dependence Loss (PDL) and high efficiency has been adopted as the dispersion element. VPG is constructed by coating an optical substrate with a thin film of dichromated. gelatin and exposing the film to two mutually coherent laser beams to form index modulation. The diffraction efficiency for a VPG is governed by Bragg effects. The depth (d) and index modulation contrast of the grating structure control the efficiency at which the light is diffracted when the Bragg condition is satisfied. Gradient index lens with high performance and low aberration are used as collimating system instead of standard lens. The spot diagrams and MTF curve of the collimating lens are shown in the paper. The receive system is InCaAs photodiode (PD) array including 512 pixels with 25 mum pitch. The spectrum resolution of the spectrometer reaches to 0.2nm and wavelength accuracy is 40pm. 于2010-10-29批量导入 Made available in DSpace on 2010-10-29T06:36:14Z (GMT). No. of bitstreams: 1 2763.pdf: 380508 bytes, checksum: bb43147fdb52b3bbcf448d76fce55e40 (MD5) Previous issue date: 2004 Int Comm Measurements & Instrumentat.; Natl Nat Sci Fdn China.; Chinese Soc Measurement.; China Instrument Soc.; Harbin Inst Technol.; Instrumentat Comm CSM.; Xian Jiaotong Univ. Chinese Acad Sci, Inst Semicond, State Key Lab Integrated Optoelect, Beijing 100083, Peoples R China Int Comm Measurements & Instrumentat.; Natl Nat Sci Fdn China.; Chinese Soc Measurement.; China Instrument Soc.; Harbin Inst Technol.; Instrumentat Comm CSM.; Xian Jiaotong Univ. |
Identificador | |
Idioma(s) |
英语 |
Publicador |
HARBIN INSTITUTE TECHNOLOGY PUBLISHERS 16 FUXINGJIE NANGANGQU, HARBIN 150006, HEILONGJIANG, PEOPLES R CHINA |
Fonte |
Li F; Xin HL; Cao P; Liu YL .Design of spectrometer based on volume phase grating for near infrared range .见:HARBIN INSTITUTE TECHNOLOGY PUBLISHERS .PROCEEDINGS OF THE THIRD INTERNATIONAL SYMPOSIUM ON INSTRUMENTATION SCIENCE AND TECHNOLOGY, VOL 3,16 FUXINGJIE NANGANGQU, HARBIN 150006, HEILONGJIANG, PEOPLES R CHINA ,2004,147-150 |
Palavras-Chave | #微电子学 #spectrometer #volume phase grating #optical design #resolution |
Tipo |
会议论文 |