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题名:
Optical feedback cavity ring-down technique for accurate measurement of ultra-high reflectivity
作者: Gong, Y.2; Li, B.2; Han, Y.2
刊名: APPLIED PHYSICS B-LASERS AND OPTICS
出版日期: 2008-11-01
卷号: 93, 期号:2-3, 页码:355-360
关键词: 07 ; 60 ; Hv ; 42 ; 60 ; Da ; 42 ; 55 ; Px
学科分类: 光学薄膜技术
文章类型: Article
中文摘要: A novel cavity ring-down (CRD) technique, based on the optical feedback effect of Fabry-Perot diode lasers, is developed for accurate reflectivity measurement of highly reflective cavity mirrors. The strong optical feedback, including the direct reflection from the front cavity mirror of a linear ring-down cavity, is re-injected into the oscillator cavity of the diode laser, and large resonant peaks are observed in the ring-down cavity output signals. The diode laser is switched off by a threshold circuit when the amplitude of a resonant peak exceeds a pre-defined threshold. Exponentially decayed signals recorded immediately after switching off the laser are used to determine the cavity decay time. Theultra-high reflectivity of cavity mirrors is measured to be 99.99606% with a reproducibility of 0.00003%. Compared with the previous phase-shift CRD technique, the signal-to-noise ratio of the cavityoutput signals is improved with an enhancement factor of over 100.
英文摘要: A novel cavity ring-down (CRD) technique, based on the optical feedback effect of Fabry-Perot diode lasers, is developed for accurate reflectivity measurement of highly reflective cavity mirrors. The strong optical feedback, including the direct reflection from the front cavity mirror of a linear ring-down cavity, is re-injected into the oscillator cavity of the diode laser, and large resonant peaks are observed in the ring-down cavity output signals. The diode laser is switched off by a threshold circuit when the amplitude of a resonant peak exceeds a pre-defined threshold. Exponentially decayed signals recorded immediately after switching off the laser are used to determine the cavity decay time. The ultra-high reflectivity of cavity mirrors is measured to be 99.99606% with a reproducibility of 0.00003%. Compared with the previous phase-shift CRD technique, the signal-to-noise ratio of the cavity output signals is improved with an enhancement factor of over 100.
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]: HIGH-FINESSE RESONATOR ; ENHANCED ABSORPTION-SPECTROSCOPY ; MODE-BY-MODE ; DIODE-LASER ; SEMICONDUCTOR-LASER ; SELF-LOCKING ; NOISE ; INTERFEROMETER ; SCHEMES ; POWER
收录类别: SCI
语种: 英语
WOS记录号: WOS:000260613600010
ISSN号: 0946-2171
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ioe.ac.cn/handle/181551/2074
Appears in Collections:薄膜光学技术研究室(十一室)_期刊论文

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作者单位: 1.Inst Optic & Elect Chinese Acad Sci Box 350 Shuan, Chengdu 610209, NM, Peoples R China
2.Chinese Acad Sci, Inst Opt & Elect, Chengdu 610209, Sichuan, Peoples R China

Recommended Citation:
Gong, Y.,Li, B.,Han, Y.. Optical feedback cavity ring-down technique for accurate measurement of ultra-high reflectivity[J]. APPLIED PHYSICS B-LASERS AND OPTICS,2008,93(2-3):355-360.
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