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Chinese Journal of Lasers, Volume. 51, Issue 8, 0801002(2024)

Research on Extinction Ratio of Double-Crystal Electro-Optic Q-switch

Jifang Shang1、*, Qinglian Li2, Xing Sun1, Ling Chen1, Wenjing Du1, and Liubang Li3
Author Affiliations
  • 1Henan Key Laboratory of Electronic Ceramic Materials and Application, College of Materials Engineering, Henan University of Engineering, Zhengzhou 451191, Henan ,China
  • 2School of Physics, Nankai University, Tianjin 300071, China
  • 3Zhengzhou Zhuoertai New Material Technology Co., Ltd., Zhengzhou 450016, Henan , China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (7)
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    References (24)
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    Figures & Tables(7)
    Structural diagram of double-crystal LT electro-optic Q-switch

    Fig. 1. Structural diagram of double-crystal LT electro-optic Q-switch

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    Calculation results of extinction ratio. (a) Extinction ratio versus crystal length; (b) extinction ratio versus optical inhomogeneity

    Fig. 2. Calculation results of extinction ratio. (a) Extinction ratio versus crystal length; (b) extinction ratio versus optical inhomogeneity

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    Schematic of eigen polarization directions when z axes of two crystals are not orthogonal

    Fig. 3. Schematic of eigen polarization directions when z axes of two crystals are not orthogonal

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    Assembled double-crystal LT electro-optic Q-switch. (a) Semi-fixed elastic holder; (b) external cover

    Fig. 4. Assembled double-crystal LT electro-optic Q-switch. (a) Semi-fixed elastic holder; (b) external cover

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    Conoscopic interference patterns in different regions of light passing surface of LT crystal. (a)(b) Interference patterns with maximum difference along y-axis; (c)(d) interference patterns with maximum difference along z-axis

    Fig. 5. Conoscopic interference patterns in different regions of light passing surface of LT crystal. (a)(b) Interference patterns with maximum difference along y-axis; (c)(d) interference patterns with maximum difference along z-axis

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    Conoscopic interference patterns with maximum difference in different regions of light passing surface of double-crystal LT electro-optic Q-switch. (a)(b) LT1; (c)(d) LT2

    Fig. 6. Conoscopic interference patterns with maximum difference in different regions of light passing surface of double-crystal LT electro-optic Q-switch. (a)(b) LT1; (c)(d) LT2

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    • Table 1. System extinction ratio and dynamic extinction ratios of LT electro-optic Q-switches

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      Table 1. System extinction ratio and dynamic extinction ratios of LT electro-optic Q-switches

      ConfigurationEmin /mJEmax /mJExtinction ratio
      System0.34167491∶1
      P1⊥P2, LT15.6015528∶1
      P1⊥P2, LT21.9516183∶1
      P1∥P2, LT15.7015026∶1
      P1∥P2, LT22.0016281∶1
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    Jifang Shang, Qinglian Li, Xing Sun, Ling Chen, Wenjing Du, Liubang Li. Research on Extinction Ratio of Double-Crystal Electro-Optic Q-switch[J]. Chinese Journal of Lasers, 2024, 51(8): 0801002

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    Paper Information

    Category: laser devices and laser physics

    Received: Jul. 11, 2023

    Accepted: Sep. 25, 2023

    Published Online: Mar. 29, 2024

    The Author Email: Shang Jifang (shangjf@haue.edu.cn)

    DOI:10.3788/CJL231006

    CSTR:32183.14.CJL231006

    Topics

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