[7] [7] Petrov V. Frequency down-conversion of solid-state laser sources to the mid-infrared spectral range using non-oxide nonlinear crystals［J］. Progress in Quantum Electronics, 2015, 42: 1-106.

[8] [8] Kemlin V, Brand P, Boulanger B. Phase-matching properties and refined Sellmeier equations of the new nonlinear infrared crystal CdSiP2［J］. Optical Letters, 2011, 36(10): 1800-1802.

[9] [9] Borshchevskii A S, Goryunova N A, Kesamanly F P, et al. Semiconducting AⅡBⅣCⅤ2 compounds［J］. Phys. Status Solidi, 1967, 21(1): 9-55.

[10] [10] Spring-Thorpe A J, Pamplin B R. Growth of some single crystal II-IV-V2 semiconducting compounds［J］. J. Crystal Growth, 1968, 3-4: 313-316.

[11] [11] Zawilski K T, Schunemann P G, Pollak T C, et al. Growth and characterization of large CdSiP2 single crystals［J］. Journal of Crystal Growth, 2010, 312: 1127-1132.

[12] [12] Petrov V, Schunemann P G, Zawilski K T, et al. Noncritical singly resonant optical parametric oscillator operation near 6.2 μm based on a CdSiP2 crystal pumped at 1064 nm［J］.Optics Letters, 2009, 34(16): 2399-2401.

[13] [13] Peremans A, Lis D, Cecchet F, Schunemann P G, et al. Synchronously pumped at 1064 nm OPO based on CdSiP2 for generation of high power picosecond pulses in the mid-infrared near 6.4 μm［J］. Powers P E, editor, Nonlinear Frequency Generation And Conversion: Materials, Devices, And Applications Ix, 2010.

[14] [14] Zhang Z, Reid D T, Chaitanaya Kumar S, et al. Femtosecond-laser pumped CdSiP2 optical parametric oscillator producing 100 MHz pulses centered at 6.2 μm［J］. Optics Letters, 2013, 38(23): 5110-5113.

[15] [15] Chaitanaya Kumar S, Krauth J, Steinmann A, et al. High-power femtosecond mid-infrared optical parameteric oscillator at 7 μm based on CdSiP2［J］. Optics Letters, 2015, 40(7): 1398-1401.

[16] [16] Chaitanaya Kumar S, Schunemann P G, Zawilski K T, et al. Advances in ultrafast optical parametric sources for the mid-infrared based on CdSiP2［J］. Journal of the Optical Society of America B, 2016, 33(11): D44-D56.

[17] [17] Cole B, Goldberg L, Chinn S, et al. Compact and efficient mid-IR OPO source pumped by a passively Q-switched Tm∶YAP laser［J］. Optics Letters, 2018, 43(5): 1099-1102.

[18] [18] Zhang Guodong, Tao Xutang, Ruan Huapeng, et al. Growth of CdSiP2 single crystals by self-seeding vertical Bridgman method［J］. Journal of Crystal Growth, 2012, 340(1): 197-201.

[19] [19] Zhang Guodong, Ruan Huapeng, Zhang Xiang, et al. Vertical Bridgman growth and optical properties of CdSiP2 crystals［J］. CrystEngComm, 2013, 15(21): 4255-4260.

[21] [21] Zhang Guodong, Wei Lei, Zhang Longzhen, et al. Growth and polarized Raman spectroscopy investigation of single crystal CdSiP2: Experimental measurements and ab initio calculations［J］. Journal of Crystal Growth, 2017, 473: 28.

[22] [22] Kui Cheng, Guodong Zhang, Zhongjun Zhai, et al. Synthesis of polycrystalline CdSiP2 with two-temperature zone method［J］. Journal of Crystal Growth, 2020, 529: 125271.

[23] [23] Giles N C, Halliburton L E, Yang S, et al. Optical and EPR study of point defects in CdSiP2crystals［J］. Journal of Crystal Growth, 2010, 312(8): 1133-1137.

[24] [24] Scherrer E M, Kananen B E, Golden E M, et al. Defect-related optical absorption bands in CdSiP2 crystals［J］. Optical Materials Express, 2017, 7(3): 658-664.