Photonics Research, Volume. 8, Issue 3, 421(2020)
Femtosecond mid-IR optical vortex laser based on optical parametric chirped pulse amplification Editors' Pick
Figures & Tables(5)
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,
Fig. 2. Amplified signal pulse energy after the second-stage OPA and compressor as a function of the second pump energy.
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.
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.
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[J]. Photonics Research, 2020, 8(3): 421
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)
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