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题名:
High-reflectivity measurement with a broadband diode laser based cavity ring-down technique
作者: Gong, Yuan; Li, Bincheng
刊名: APPLIED PHYSICS B-LASERS AND OPTICS
出版日期: 2007-08-01
卷号: 88, 期号:3, 页码:477-482
文章类型: Article
英文摘要: A simple cavity ring-down technique employing a cw broadband diode laser is described for the reflectivity measurements of highly reflective mirrors. Due to the broad line width of the diode laser, the laser beam can be continuously injected into the ring-down cavity without tuning the cavity length or the laser frequency. Both Fourier- and time-domain data-processing approaches are developed to determine the reflectivity. In the Fourier domain, the amplitudes and phase shifts of the first and third harmonics of a periodic ring-down signal are measured as a function of the modulation frequency covering an appropriate range. The cavity decay time and the reflectivity of the cavity mirror are determined by minimizing a mean square variance containing both the amplitude and phase-shift error terms. On the other hand, in the time domain, the cavity decay time and the instrumental response time are determined simultaneously by fitting the measured waveforms of the cavity ring-down signals to a rigorous time-domain model via a multi-parameter fitting procedure. The reflectivity measurements are repeated at four cavity lengths and all the results obtained with both data-processing approaches are in excellent agreement. The reflectivity of cavity mirrors near 830 nm is statistically determined to be 0.99797 with an uncertainty less than 3 x 10(-5).
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]: PHASE-SHIFT METHOD ; ABSORPTION-SPECTROSCOPY ; OPTICAL CAVITY ; INTERFEROMETER ; FEEDBACK ; DECAY ; MIRRORS
收录类别: SCI
语种: 英语
WOS记录号: WOS:000248863300020
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ioe.ac.cn/handle/181551/3553
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: 1.Chinese Acad Sci, Inst Opt & Elect, Shuangliu 610209, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

Recommended Citation:
Gong, Yuan,Li, Bincheng. High-reflectivity measurement with a broadband diode laser based cavity ring-down technique[J]. APPLIED PHYSICS B-LASERS AND OPTICS,2007,88(3):477-482.
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