| [1] | SOLEIMANI N, POTING B, GEBREMICHAEL E, et al. Coilable single crystals fibers of doped-YAG for high power laser applications. Journal of Crystal Growth, 2014,393:18-22. DOI    
																																					URL
 | 
																													
																							| [2] | HARRINGTON J. Single-crystal fiber optics: a review. Proceedings of SPIE, 2014,8959:895902. | 
																													
																							| [3] | DELEN X, AUBOURG A, DEVRA L, et al. Single crystal fiber for laser sources. Proceedings of SPIE, 2015,9324:934202. | 
																													
																							| [4] | DAWSON J W, MESSERLY M J, BEACH R J, et al. Analysis of the scalability of diffraction-limited fiber lasers and amplifiers to high average power. Optics Express, 2008,16(17):13240-13266. DOI    
																																					URL
 | 
																													
																							| [5] | BRIDGES T J, HASIAK J S, STRNAD A R. Single-crystal AgBr infrared optical fibers. Optics Letters, 1980,5(3):85-86. DOI    
																																					URL
 | 
																													
																							| [6] | RIBERIRO R M, FIASCA A B A, SANTOS A M. Optical activity measurements in the photorefractive Bi12TiO20 single crystal fibers. Optical Material, 1998,10:201-205. DOI    
																																					URL
 | 
																													
																							| [7] | LEBBOU K. Single crystals fiber technology design. Where we are today? Optical Material, 2017,63:13-18. DOI    
																																					URL
 | 
																													
																							| [8] | YANG Y L, YE L H, BAO R J. Growth and characterization of Yb:Ho:YAG single crystal fiber. Infrared Physics & Technology, 2018,91:85-89. | 
																													
																							| [9] | PARTHASARATHY T A, HAY R S, FAIR G. Predicted performance limits of yttrium aluminum garnet fiber lasers. Optical Engineering, 2010,49(9):094302. DOI    
																																					URL
 | 
																													
																							| [10] | NIE C D, BERA S, HARRINGTON J A. Growth of single-crystal YAG fiber optics. Optics Express, 2016,24(14):15522-15527. DOI    
																																					URL
 | 
																													
																							| [11] | MU X D, MEISSNER S, MEISSNER H. Laser diode pumped high efficiency Yb:YAG crystalline fiber waveguide lasers. Proceedings of SPIE, 2015,9342:934205. | 
																													
																							| [12] | CLARKSON W A, KOCH R, HANNA D C. Room-temperature diode-pumped Yb:YAG laser at 946 nm. Optics Letters, 1999,21(10):737-739. DOI    
																																					URL
 | 
																													
																							| [13] | DELEN X, ZAOUTER Y, MARTIAL I, et al. Yb:YAG single crystal fiber power amplifier for femtosecond sources. Optics Letters, 2013,38(2):109-111. DOI    
																																					URL
 | 
																													
																							| [14] | CHANI V. I, YOSIKAWA A, KUWANO Y, et al. Preparation and characterization of Yb:Y3Al5O12 fiber crystals. Materials Research Bulletin, 2000,35:1615-1624. DOI    
																																					URL
 | 
																													
																							| [15] | YOSHIKAWA A, BOULON G, LAVERSENNE L, et al. Growth and spectroscopic analysis of Yb3+-doped Y3Al5O12 fiber single crystals. Journal of Applied Physics, 2003,94(9):5479-5487. DOI    
																																					URL
 | 
																													
																							| [16] | WANG T, ZHANG J, ZHANG N, et al. The characteristics of high- quality Yb:YAG single crystal fibers grown by a LHPG method and the effects of their discoloration. RSC Advances, 2019,9:22567-22575. DOI    
																																					URL
 | 
																													
																							| [17] | CRSLAW H S, JAEGER J C. Conduction of Heat in Solids. New York: Oxford Univcrsity Press, 1959: 387. | 
																													
																							| [18] | REINBERG A R, RISEHERG L A, BROWN R M, et al. GaAs: Si LED pumped Yb-doped YAG laser. Applied Physics Letters, 1971,19(1):11-13. DOI    
																																					URL
 | 
																													
																							| [19] | YU L, YA L, BAO R, et al. Sensitivity-enhanced Tm3+/Yb3+ co-doped YAG single crystal optical fiber thermometry based on upconversion emissions. Optics Communications, 2018,410:632-636. DOI    
																																					URL
 | 
																													
																							| [20] | LI Y, MILLR K, JOHNSON E G, et al. Lasing characteristics of Ho:YAG single crystal fiber. Optics Express, 2016,24(9):9751-9756. DOI    
																																					URL
 | 
																													
																							| [21] | LI Y, ZHANG Z Y, BUCKLEY I, et al. Investigation of the amplification properties of Ho:YAG single crystal fiber. Proceedings of SPIE, 2015,9342:934205. | 
																													
																							| [22] | SHEN J W, WU B, SHEN Y H. High power CW laser operation with a Nd:YAG single-crystal fiber grown by LHPG method. Laser Physics, 2009,19(10):2031-2034. DOI    
																																					URL
 | 
																													
																							| [23] | TONG L M, ZHU D, LUO Q M. A laser pumped Nd3+-doped YAG fiber-optic thermal tip for laser thermotherapy . Lasers in Surgery and Medicine, 2002,30:67-69. DOI    
																																					URL
 | 
																													
																							| [24] | TONG L M, LOU J Y, HONG D F. A fiber-optic thermal source for laser surgery applications. Proceedings of SPIE, 2000,4224:135-138. |