[1] Levine B F, Choi K K, Bethea C G, Walker J, Malik R J 1987 Appl. Phys. Lett. 50 1092
[2] Yuan X Z, Lu W, Li N, Chen X S, Shen X C, Zi J 2003 Acta Phys. Sin. 52 503 (in Chinese) [袁先漳, 陆卫, 李宁, 陈效双, 沈学础, 资剑 2003 物理学报 52 503]
[3] Levine B F, Bethea C G, Hasnain G, Shen V O, Pelve E, Abbott R R, Hsieh S J 1990 Appl. Phys. Lett. 56 851
[4] Lee S C, Krishna, Brueck S R J 2009 Opt. Express 17 23160
[5] Castellano F, Rossi F, Faist J, Lhuillier E, Berger V 2009 Phys. Rev. B 79 205304
[6] Levine B F 1993 J. Appl. Phys. 74 R1
[7] Nedelcu A, Costard E, Bois P, Marcadet X 2007 Infrared Phys. Technol. 50 227
[8] Li N, Yuan X Z, Li N, Lu W, Li Z F, Dou H F, Shen X C, Jin L, Li H W, Zhou J M, Huang Y 2000 Acta Phys. Sin. 49 797 (in Chinese) [李娜, 袁先漳, 李宁, 陆卫, 李志峰, 窦红飞, 沈学础, 金莉, 李宏伟, 周均铭, 黄绮 2000 物理学报 49 797]
[9] Gunapala S, Bandara S, Bock J, Ressler M, Liu J, Mumolo J, Rafol S, Ting D, Wemer M 2002 Aerospace Conference Proceedings Montana, American, March 9-16, pp3-1437
[10] Choi K K, Jhabvala M D, Sun J, Jhabvala C A, Waczynski A, Olver K 2013 Appl. Phys. Lett. 103 201113
[11] Costard E, Bois P, de Rossi A, Nedelcu A, Cocle O, Gauthier F H, Audier F 2003 C. R. Phys. 10 1089
[12] Wang L M, Zhang R, Lin Y N, Xu S L 2008 Infrared Laser Eng. S2 570 (in Chinese) [王力民, 张蕊, 林一楠, 徐世录 2008 红外与激光工程 S2 570]
[13] Lourenco M A, Homewood K P, Considine L 1994 Mater. Sci. Eng. B 28 507
[14] Whaley G J, Cohen P I 1990 Appl. Phys. Lett. 57 144
[15] Sasaki T, Suzuki H, Sai A, Takahasi M, Fujikawa S, Kamiya I, Ohshita Y, Yamaguchi M 2011 J. Cryst. Growth 323 13
[16] Quillec M, Goldstein L, Roux G L, Burgeat J, Primot J 1984 J. Appl. Phys. 55 2094
[17] Tanner B K, Parbrook P J, Whitehouse C R, Keir A M, Johnson A D, Jones J, Wallis D, Smith L M, Luun B, Hogg J H C 2001 J. Phys. D: Appl. Phys. 34 A109
[18] Li Q, Wang G T 2010 Appl. Phys. Lett. 97 181107
[19] Zhang G, Ovtchinnikov A, Pessa M 1993 J. Cryst. Growth 127 209
[20] Cho Y H, Gainer G H, Fischer A J, Song J J, Keller S, Mishra U K, DenBaars S P 1998 Appl. Phys. lett. 73 1370
[21] Shi Z W, Wang L, Zhen H L, Wang W X, Chen H 2013 Nanoscale Res. Lett. 8 310