• Chinese Optics Letters
  • Vol. 20, Issue 11, 113801 (2022)
Ding Yan, Zhiyuan Zhong, Tong Qi, Hongying Chen, and Wei Gao*
Author Affiliations
  • Heilongjiang Provincial Key Laboratory of Quantum Control, School of Measurement and Communication Engineering, Harbin University of Science and Technology, Harbin 150080, China
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    DOI: 10.3788/COL202220.113801 Cite this Article Set citation alerts
    Ding Yan, Zhiyuan Zhong, Tong Qi, Hongying Chen, Wei Gao. High-fidelity parametric amplification of Ince–Gaussian beams[J]. Chinese Optics Letters, 2022, 20(11): 113801 Copy Citation Text show less
    LG spectra of input signal and amplified signal pumped by Gaussian and flattop beams. (a) and (b) show the cases of wp = ws, 2ws, and 3ws for IGe4,0 and IGo4,2 signals at gain of 2, respectively. (c) LG spectra with different gain factors at wp = 3ws.
    Fig. 1. LG spectra of input signal and amplified signal pumped by Gaussian and flattop beams. (a) and (b) show the cases of wp = ws, 2ws, and 3ws for IGe4,0 and IGo4,2 signals at gain of 2, respectively. (c) LG spectra with different gain factors at wp = 3ws.
    Diagram of the OPA experimental setup, where the key components include the mirror (M), lenses (L1-L7), polarizing beam splitter (PBS), half-wave plate (HWP), spatial light modulator (SLM), spatial filter (SF), beam profiler (CMOS), and dichroic mirror (DM).
    Fig. 2. Diagram of the OPA experimental setup, where the key components include the mirror (M), lenses (L1-L7), polarizing beam splitter (PBS), half-wave plate (HWP), spatial light modulator (SLM), spatial filter (SF), beam profiler (CMOS), and dichroic mirror (DM).
    Simulated and experimentally observed results of the OPA pumped by a Gaussian beam, where (a) shows the IG signal profiles; (b) and (c) are corresponding amplified signal profiles with wp = ws, 2ws, respectively.
    Fig. 3. Simulated and experimentally observed results of the OPA pumped by a Gaussian beam, where (a) shows the IG signal profiles; (b) and (c) are corresponding amplified signal profiles with wp = ws, 2ws, respectively.
    Results of the OPA pumped by a flattop beam, where (a)–(c) show the theoretical beam profiles, the measured signals, and the corresponding amplified signals, respectively; (d) comparison of the far-field amplified light and the input signal obtained via experimental observation.
    Fig. 4. Results of the OPA pumped by a flattop beam, where (a)–(c) show the theoretical beam profiles, the measured signals, and the corresponding amplified signals, respectively; (d) comparison of the far-field amplified light and the input signal obtained via experimental observation.
    Measured amplified signal energy and gain factor versus the input signal energy for IG-mode OPA. Inset, the overlap of the pump, IGe4,0, and IGo4,2 signals.
    Fig. 5. Measured amplified signal energy and gain factor versus the input signal energy for IG-mode OPA. Inset, the overlap of the pump, IGe4,0, and IGo4,2 signals.
    Ding Yan, Zhiyuan Zhong, Tong Qi, Hongying Chen, Wei Gao. High-fidelity parametric amplification of Ince–Gaussian beams[J]. Chinese Optics Letters, 2022, 20(11): 113801
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