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Acta Optica Sinica, Volume. 40, Issue 22, 2214001(2020)

Study on the Saturable Absorption Characteristics of Co 2+∶MgAl2O4 with Different Orientations

Zijun Fang1, Yongling Hui1,2,3,4, Guotai Li1, Zhanda Zhu1,2,3,4, Hong Lei1,2,3,4, and Qiang Li1,2,3,4、*
Author Affiliations
  • 1Institute of Laser Engineering, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124 China
  • 2Beijing Engineering Research Center of Laser Applied Technology, Beijing 100124 China
  • 3Beijing Higher Institution Engineering Research Center of Advanced Laser Manufacturing, Beijing 100124 China
  • 4Key Laboratory of Trans-scale Laser Manufacturing Technology Ministry of Education, Beijing 100124 China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (6)
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    References (14)
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    Figures & Tables(6)
    Experimental device for measuring the relation between crystal transmittance and detection light polarization direction

    Fig. 1. Experimental device for measuring the relation between crystal transmittance and detection light polarization direction

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    Angle α between crystal axis of two cutting directions and polarization direction of laser varies with transmittance. (a) [100]-cut; (b) [110]-cut

    Fig. 2. Angle α between crystal axis of two cutting directions and polarization direction of laser varies with transmittance. (a) [100]-cut; (b) [110]-cut

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    Co2+∶MgAl2O4 crystal structure conjecture

    Fig. 3. Co2+∶MgAl2O4 crystal structure conjecture

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    Experimental setup of saturable absorption crystals with different orientations in lasers

    Fig. 4. Experimental setup of saturable absorption crystals with different orientations in lasers

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    Laser output energy of different cutting directions Co2+∶MgAl2O4 at different angles. (a) [100]-cut; (b) [110]-cut

    Fig. 5. Laser output energy of different cutting directions Co2+∶MgAl2O4 at different angles. (a) [100]-cut; (b) [110]-cut

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    • Table 1. Comparison of laser output in [100] and [110] cutting directions under the same pumping condition

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      Table 1. Comparison of laser output in [100] and [110] cutting directions under the same pumping condition

      Cutting directionOutputenergy(max) /μJPulse width /nsStability /%Beam quality M2Extinction ratio
      [100]-cut2455.1293.71.87183∶1
      [110]-cut2655.0594.21.56185∶1
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    Zijun Fang, Yongling Hui, Guotai Li, Zhanda Zhu, Hong Lei, Qiang Li. Study on the Saturable Absorption Characteristics of Co 2+∶MgAl2O4 with Different Orientations[J]. Acta Optica Sinica, 2020, 40(22): 2214001

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    Paper Information

    Category: Lasers and Laser Optics

    Received: Jun. 22, 2020

    Accepted: Jul. 24, 2020

    Published Online: Oct. 25, 2020

    The Author Email: Li Qiang (ncltlq@bjut.edu.cn)

    DOI:10.3788/AOS202040.2214001

    Topics

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