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Chinese Journal of Lasers, Volume. 47, Issue 6, 604006(2020)

High Reflectivity Measurement Based on Coupled Cavity Ring-Down Technique

Du Xinghu1,2,3, Xue Ying1,2,3, He Xing1,2, Wang Shuai1,2, Yang Ping1,2, and Xu Bing1,2
Author Affiliations
  • 1Key Laboratory of Adaptive Optics, Chinese Academy of Sciences, Chengdu, Sichuan 610209, China
  • 2Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu, Sichuan 610209, China
  • 3University of Chinese Academy of Sciences, Beijing 100049, China
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    AbstractGet PDF(in Chinese)
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    References (16)
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    Figures & Tables(7)
    Schematics of coupled cavity ring-down technique. (a) Initial cavity; (b) measured cavity

    Fig. 1. Schematics of coupled cavity ring-down technique. (a) Initial cavity; (b) measured cavity

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    Simulation diagrams of coupled intracavity mode. (a) Optimal coupling state; (b) x-axis offset; (c) y-axis offset; (d) x-axis and y-axis offset to the same degree

    Fig. 2. Simulation diagrams of coupled intracavity mode. (a) Optimal coupling state; (b) x-axis offset; (c) y-axis offset; (d) x-axis and y-axis offset to the same degree

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    Schematic of coupled cavity ring-down system for high reflectivity measurement

    Fig. 3. Schematic of coupled cavity ring-down system for high reflectivity measurement

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    Experimental diagram of coupled cavity ring-down system for high reflectivity measurement

    Fig. 4. Experimental diagram of coupled cavity ring-down system for high reflectivity measurement

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    Facula model of traditional cavity ring-down. (a) Initial cavity being in TEM00 model; (b) measured cavity being in TEM00 model

    Fig. 5. Facula model of traditional cavity ring-down. (a) Initial cavity being in TEM00 model; (b) measured cavity being in TEM00 model

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    Facula model of coupled cavity ring-down. (a) Coupled cavity being out of alignment 1; (b) coupled cavity being out of alignment 2; (c) coupled initial cavity being in TEM00 model; (d) coupled measured cavity being in TEM00 model

    Fig. 6. Facula model of coupled cavity ring-down. (a) Coupled cavity being out of alignment 1; (b) coupled cavity being out of alignment 2; (c) coupled initial cavity being in TEM00 model; (d) coupled measured cavity being in TEM00 model

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    • Table 1. Comparison of measurements obtained by two methods

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      Table 1. Comparison of measurements obtained by two methods

      SampleCavitylength /mCavity loss /10-6Reflectivity /%
      Initial cavityMeasured cavity
      1#0.509947.51523.999.94231±0.00203
      940.91516.799.94237±0.00148▲
      2#0.9211712.31963.599.97487±0.00310
      1696.61947.399.97488±0.00279▲▲
      Notes:▲represents the measurement of sample 1# under the coupled cavity ring-down technique;▲▲represents the measurement of sample 2 # under the coupled cavity ring-down technique.
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    Du Xinghu, Xue Ying, He Xing, Wang Shuai, Yang Ping, Xu Bing. High Reflectivity Measurement Based on Coupled Cavity Ring-Down Technique[J]. Chinese Journal of Lasers, 2020, 47(6): 604006

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    Paper Information

    Category: Measurement and metrology

    Received: Nov. 6, 2019

    Accepted: --

    Published Online: Jun. 3, 2020

    The Author Email:

    DOI:10.3788/CJL202047.0604006

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology