[1] [1] Devireddy K, Muralimohan C, Venkateswarlu D. A review of research progress on dissimilar laser weld-brazing of automotive applications[C]//Proceedings of 2017 IOP Conference Series: Materials Science and Engineering, Hyderabad, India., June 1-2, 2017.

[2] [2] Salamin Y, Harman Z, K eitel C. Direct high-power laser acceleration of ions for medical applications[J]. Physics Review Letter, 2008, 100(15): 155004.

[3] [3] Extance A. Military technology: laser weapons get real[J]. Nature, 2015, 521(7553): 408-410.

[4] [4] Fan Y. Heat generation in Nd∶YAG and Yb∶YAG[J]. IEEE Journal of Quantum Electronics, 1993, 29(6): 1457-1459.

[5] [5] Bruesselbach H, Sumida D, Reeder R, et al. Low-heat high-power scaling using InGaAs-diode-pumped Yb∶YAG lasers[J]. IEEE Journal of Selected Topics in Quantum Electronics, 1997, 3(1): 105-116.

[6] [6] Krner J, Jambunathan V, Hein J, et al. Spectroscopic characterization of Yb3+-doped laser materials at cryogenic temperatures[J]. Applied Physics B, 2017, 116: 75-81.

[7] [7] Fan T, Ripin D, Aggarwal R, et al. Cryogenic Yb3+-doped solid-state lasers[J]. IEEE Journal of selected topics in Quantum Electronics, 2007, 13(3): 448-459.

[8] [8] Ripin D, Ochoa J, Aggarwal R, et al. 300 W cryogenically cooled Yb∶YAG laser[J]. IEEE Journal of Quantum Electronics, 2005, 41(10): 1274-1277.

[9] [9] J Ogino, Tokita S, KitajimaS, et al. 10 J operation of a conductive-cooled Yb∶YAG active-mirror amplifier and prospects for 100 Hz operation[J]. Optics Letters, 2021, 46(3): 621-624.

[10] [10] J K Brasseur, Abeeluch A, Awtry A, et al. 2.3 kW cryogenically cooled Yb∶YAG laser[C]//Conference on Lasers and Electro-Optics/International Quantum Electronics Conference, OSA Technical Digest (CD) (Optica Publishing Group, 2009), CThR1, 31 May-5 June, 2009.

[11] [11] Ferrara P, Ciofini M, Esposito L, et al. 3-D numerical simulation of Yb∶YAG active slabs with longitudinal doping gradient for thermal load effects assessmenT[J]. Optics Express, 2014, 22(5): 5375-5386.