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题名:
Tunable Fabry-Perot filter and grating hybrid modulator to improve dispersive spectrometer resolution
作者: Fang, Liang; Li, Guojun; Yang, Huan; Zhou, Chongxi
刊名: APPLIED PHYSICS B-LASERS AND OPTICS
出版日期: 2016-05-01
卷号: 122, 期号:5
DOI: 10.1007/s00340-016-6416-x
文章类型: Article
英文摘要: We describe a tunable Fabry-Perot filter and grating hybrid modulator to achieve a higher spectral resolution compared with that produced by a single grating with the same period. In the hybrid modulator, a tunable Fabry-Perot filter is designed with a long cavity to accommodate a multi-order narrowband pre-filter. A grating is then utilized to separate these multi-orders spatially. Scanning the air gap of the tunable Fabry-Perot filter within 1/2 wavelength, the entire spectrogram can be achieved by compositing each group of transmitted multi-orders. Light passes first through the Fabry-Perot cavity and then into the grating. Thus, all of the light is incident on the Fabry-Perot cavity at a given angle, which can reduce the requirement for incident beam alignment and simplify the operation of the hybrid modulator. The structural matching conditions of the tunable Fabry-Perot filter and grating were presented based on the operating law of the hybrid modulator. In terms of the Rayleigh criterion, the practical spectral resolution of the hybrid modulator can be increased by at least twice that of the single grating. Experiments with a neon lamp revealed that the spectral resolution of the hybrid modulator was nearly double that of a single grating.
WOS标题词: Science & Technology ; Physical Sciences
类目[WOS]: Optics ; Physics, Applied
研究领域[WOS]: Optics ; Physics
关键词[WOS]: MINIATURE SPECTROMETER ; MICROSPECTROMETERS ; SPECTROSCOPY ; SENSORS
收录类别: SCI
项目资助者: National Natural Science Foundation of China(61308064) ; National Basic Research Program of China (973 Program)(2014CB744204) ; National Program for Significant Scientific Instruments Development of China(2011YQ03012407)
语种: 英语
WOS记录号: WOS:000378778600040
ISSN号: 0946-2171
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ioe.ac.cn/handle/181551/3912
Appears in Collections:光电技术研究所被WoS收录文章_期刊论文

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作者单位: Chinese Acad Sci, State Key Lab Opt Technol Nanofabricat & Microeng, Inst Opt & Elect, POB 350, Chengdu 610209, Peoples R China

Recommended Citation:
Fang, Liang,Li, Guojun,Yang, Huan,et al. Tunable Fabry-Perot filter and grating hybrid modulator to improve dispersive spectrometer resolution[J]. APPLIED PHYSICS B-LASERS AND OPTICS,2016,122(5).
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