[1] Dressler L, Rauch R, Reimann R. On the inhomogeneity of refractive index of CaF2 crystals for high performance optics[J]. Crystal Research and Technology, 27, 413-420(1992).

[2] Klein C A. Analytical stress modeling of high-energy laser windows: application to fusion-cast calcium fluoride windows[J]. Journal of Applied Physics, 98, 043103(2005).

[3] Kawaguchi Y, Narazaki A, Sato T et al. F2-laser-induced damage on transparent fluoride crystals[J]. Proceedings of SPIE, 5662, 438-443(2004).

[4] Ma Y, Du G T, Wang X et al. Growth and characteristics of ZnO thin film on CaF2 (11‒21) substrate by metalorganic vapor phase epitaxy[J]. Applied Surface Science, 243, 24-29(2005).

[5] Nicolov M. Shaped single crystals of CaF2[J]. Journal of Crystal Growth, 218, 62-66(2000).

[6] He X, Meng L M, Ma Y C et al. Efficient fabrication of compound refractive lens for hard X-ray using high-repetition-rate femtosecond laser[J]. Chinese Journal of Lasers, 51, 1602405(2024).

[7] Qi J Y, Zheng J X, Zhang X et al. Femtosecond laser fabrication of infrared micro-optical devices based on hard and brittle materials and their applications (invited)[J]. Chinese Journal of Lasers, 51, 040205(2024).

[8] Varlamova O, Costache F, Reif J et al. Self-organized pattern formation upon femtosecond laser ablation by circularly polarized light[J]. Applied Surface Science, 252, 4702-4706(2006).

[9] Qian B, Song J, Dong G P et al. Formation and partial recovery of optically induced local dislocations inside CaF2 single crystal[J]. Optics Express, 17, 8552-8557(2009).

[10] Hu X, Dai Y, Yang L Y et al. Self-formation of quasiperiodic void structure in CaF2 induced by femtosecond laser irradiation[J]. Journal of Applied Physics, 101, 023112(2007).

[11] Butkutė A, Merkininkaitė G, Jurkšas T et al. Femtosecond laser assisted 3D etching using inorganic-organic etchant[J]. Materials, 15, 2817(2022).

[12] Andrijec D, Andriukaitis D, Vargalis R et al. Hybrid additive-subtractive femtosecond 3D manufacturing of nanofilter-based microfluidic separator[J]. Applied Physics A, 127, 781(2021).

[13] Jonušauskas L, Mackevičiūtė D E, Kontenis G et al. Femtosecond lasers: the ultimate tool for high-precision 3D manufacturing[J]. Advanced Optical Technologies, 8, 241-251(2019).

[14] Zong H W, Zhao J S, Song X L et al. Development of research on damage characteristics of calcium fluoride crystal under deep ultraviolet laser irradiation[J]. Laser & Optoelectronics Progress, 56, 190002(2019).

[15] Mann K R, Pfeifer G, Reisse G. Damage threshold measurements using femtosecond excimer laser[J]. Proceedings of SPIE, 1848, 415-423(1993).

[16] Guo T Y, Zhang L M, Ren Y Y et al. Surface characteristics of CaF2 crystal ablated by femtosecond laser[J]. Acta Optica Sinica, 39, 0126019(2019).

[17] Xie P P, Yang F, Xu L L et al. Precision determination of the laser-induced damage threshold for infrared glasses under femtosecond laser irradiation[J]. Optics & Laser Technology, 180, 111420(2025).

[18] Xie M, Yang P L, Zhang P Q et al. Femtosecond laser-induced damage on the end face of an As2S3 chalcogenide glass fiber[J]. Optics & Laser Technology, 119, 105587(2019).

[19] Jiang T, Zhao Q L, Dong Z W et al. Interaction mechanism of femtosecond laser and wide band-gap material[J]. Infrared and Laser Engineering, 39, 1044-1048(2010).