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Acta Optica Sinica, Volume. 40, Issue 4, 404001(2020)

Tunable THz Radiation Source Based on DAST Crystal via Difference Frequency Generation

Xu Degang1,2,3, Zhu Xianli1,2,3, Wang Yuye1,2,3、*, Li Jining1,2,3, He Yixin1,2,3, Pang Zibo4, Cheng Hongjuan4, and Yao Jianquan1,2,3
Author Affiliations
  • 1School of Precision Instrument and Opto-Electronics Engineering, Tianjin University, Tianjin 300072, China
  • 2The Institute of Laser & Opto-Electronics, Tianjin University, Tianjin 300072, China
  • 3Key Laboratory of Opto-Electronic Information Technology, Ministry of Education, Tianjin University, Tianjin 300072, China
  • 4The 46th Research Institute, China Electronics Technology Group Corporation, Tianjin 300220, China
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    AbstractGet PDF(in Chinese)
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    Figures & Tables(7)
    Growth device of DAST crystal by spontaneous nucleation method

    Fig. 1. Growth device of DAST crystal by spontaneous nucleation method

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    Experimental setup of THz radiation source based on DAST crystal via different frequency generation

    Fig. 2. Experimental setup of THz radiation source based on DAST crystal via different frequency generation

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    Photographs of DAST crystal. (a) Mass concentration is 3.0 g/100mL, size is (4×3.5×0.35) mm3; (b) mass concentration is 3.5 g/100 mL, size is (4×4×0.38) mm3; (c) mass concentration is 4.0 g/100 mL, size is (4.5×3.5×0.4) mm3

    Fig. 3. Photographs of DAST crystal. (a) Mass concentration is 3.0 g/100mL, size is (4×3.5×0.35) mm3; (b) mass concentration is 3.5 g/100 mL, size is (4×4×0.38) mm3; (c) mass concentration is 4.0 g/100 mL, size is (4.5×3.5×0.4) mm3

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    Microscopic images of the (001) plane of DAST crystal. (a) Mass concentration is 3.0 g/100 mL;(b) mass concentration is 3.5 g/100 mL; (c) mass concentration is 4.0 g/100 mL

    Fig. 4. Microscopic images of the (001) plane of DAST crystal. (a) Mass concentration is 3.0 g/100 mL;(b) mass concentration is 3.5 g/100 mL; (c) mass concentration is 4.0 g/100 mL

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    Raman spectrum of DAST crystal

    Fig. 5. Raman spectrum of DAST crystal

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    Output performance of KTP-OPO. (a) Relationship between phase-matching angle of KTP-OPO and the output wavelength of signal light and idle light; (b) relationship between voltage of optical scanner and the output wavelength of signal light; (3) dual wavelength pump light output characteristic of KTP-OPO; (4) dual-wavelength tunability characteristic of KTP-OPO

    Fig. 6. Output performance of KTP-OPO. (a) Relationship between phase-matching angle of KTP-OPO and the output wavelength of signal light and idle light; (b) relationship between voltage of optical scanner and the output wavelength of signal light; (3) dual wavelength pump light output characteristic of KTP-OPO; (4) dual-wavelength tunability characteristic of KTP-OPO

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    Broadband THz output spectrum based on DAST crystal

    Fig. 7. Broadband THz output spectrum based on DAST crystal

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    Xu Degang, Zhu Xianli, Wang Yuye, Li Jining, He Yixin, Pang Zibo, Cheng Hongjuan, Yao Jianquan. Tunable THz Radiation Source Based on DAST Crystal via Difference Frequency Generation[J]. Acta Optica Sinica, 2020, 40(4): 404001

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    Paper Information

    Category: Detectors

    Received: Sep. 2, 2019

    Accepted: --

    Published Online: Feb. 11, 2020

    The Author Email: Yuye Wang (yuyewang@tju.edu.cn)

    DOI:10.3788/AOS202040.0404001

    Topics

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