[1] [1] Christian H J, Frost R L, Gillaspy P H, et al. Observations of Optical Lighting Emissions from above Thunderstorms Using U-2 Aircraft[J]. Bulletin of the American Meteorological Society, 2010, 64(2): 120-123.

[5] [5] Guo X, Liu N, Liu Y, et al. Generation of continuous variable quantum entanglement using a fiber optical parametric amplifier[J]. Optics Letters, 2016, 41(3): 653.

[7] [7] Watson S, Gaetano E D, Mcbrearty E, et al. Narrow Linewidth Distributed Feedback Diode Lasers for Cooling in Cold Atom Systems[C] / / 2020 Conference on Lasers and Electro-Optics (CLEO), 2020: 1-2.

[9] [9] Eisaman M, Andre A, Massou F, et al. Electromagnetically induced transparency with tunable single-photon pulses[J]. Nature, 2005, 438(7069): 837-841.

[12] [12] Kim M, Notermans R, Overstreet C, et al. 40 W, 780 nm laser system with compensated dual beam splitters for atom interferometry[J]. Opt. Lett. , 2020, 45(23): 6555 -6558.

[14] [14] Guo W, Chen H X, Zhang X B, et al. Broadband secondharmonic generation in a tapered PPLN waveguide[J]. Optoelectronics Letters, 2020, 16(04): 252-255.

[17] [17] Fejer M M, Magel G A, Jundt D H, et al. Quasi-phasematched second harmonic generation: tuning and tolerances[J]. IEEE Journal of Quantum Electronics, 1992, 28(11): 2631-2654.

[18] [18] Bai X, Sheng Q, Zhang H, et al. High-Power All-Fiber Single-Frequency Erbium-Ytterbium Co-Doped Fiber Master Oscillator Power Amplifier[J]. IEEE Photonics Journal,2017, 7(6): 1-6.