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Photonics Research, Volume. 8, Issue 3, 421(2020)

Femtosecond mid-IR optical vortex laser based on optical parametric chirped pulse amplification Editors' Pick

Junyu Qian1,2, Yujie Peng1,3,4、*, Yanyan Li1, Pengfei Wang1,2, Beijie Shao1,2, Zhe Liu1, Yuxin Leng1,3,5、*, and Ruxin Li1,3,6、*
Author Affiliations
  • 1State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
  • 2Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
  • 3CAS Center for Excellence in Ultra-intense Laser Science, Shanghai 201800, China
  • 4e-mail: yjpeng@siom.ac.cn
  • 5e-mail: lengyuxin@mail.siom.ac.cn
  • 6e-mail: ruxinli@mail.shcnc.ac.cn
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    Schematic of the 4 μm optical vortex OPCPA system. SPP, spiral phase plate; HWP, half-wave plate; TFP, thin film polarizer; DM, dichroic mirror; KTA, KTiOAsO4.

    Fig. 1. Schematic of the 4 μm optical vortex OPCPA system. SPP, spiral phase plate; HWP, half-wave plate; TFP, thin film polarizer; DM, dichroic mirror; KTA, KTiOAsO4.

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    Amplified signal pulse energy after the second-stage OPA and compressor as a function of the second pump energy.

    Fig. 2. Amplified signal pulse energy after the second-stage OPA and compressor as a function of the second pump energy.

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    (a) Spatial profile of the 4 μm vortex output after SPP. (b) Interference fringes of vortex and plane beams. (c) Spatial profile of the amplified 4 μm vortex output. (d) Interference fringes of amplified vortex and plane beams.

    Fig. 3. (a) Spatial profile of the 4 μm vortex output after SPP. (b) Interference fringes of vortex and plane beams. (c) Spatial profile of the amplified 4 μm vortex output. (d) Interference fringes of amplified vortex and plane beams.

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    Spectra of the optical vortex beam measured at four different quadrants after the compressor. The small figures and the serial numbers show the measured position of the spot.

    Fig. 4. Spectra of the optical vortex beam measured at four different quadrants after the compressor. The small figures and the serial numbers show the measured position of the spot.

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    (a) Measured and (b) reconstructed SHG-FROG traces. (c)–(f) Temporal profiles of the optical vortex beam measured at first to fourth quadrants.

    Fig. 5. (a) Measured and (b) reconstructed SHG-FROG traces. (c)–(f) Temporal profiles of the optical vortex beam measured at first to fourth quadrants.

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    Junyu Qian, Yujie Peng, Yanyan Li, Pengfei Wang, Beijie Shao, Zhe Liu, Yuxin Leng, Ruxin Li, "Femtosecond mid-IR optical vortex laser based on optical parametric chirped pulse amplification," Photonics Res. 8, 421 (2020)

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    Paper Information

    Category: Lasers and Laser Optics

    Received: Dec. 5, 2019

    Accepted: Jan. 21, 2020

    Published Online: Feb. 28, 2020

    The Author Email: Yujie Peng (yjpeng@siom.ac.cn), Yuxin Leng (lengyuxin@mail.siom.ac.cn), Ruxin Li (ruxinli@mail.shcnc.ac.cn)

    DOI:10.1364/PRJ.385190

    Topics

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