[1] Marder S R, Perry J W, Schaefer W P, et al. Science, 1989, 245(4918): 626.

[2] Schneider A, Biaggio I, Günter P, et al. Optics Communications, 2003, 224(4): 337.

[3] Jazbinsek M, Mutter L, Günter P, et al. IEEE Journal of Selected Topics in Quantum Electronics, 2008, 14(5): 1298.

[4] Pan F, Knpfle G, Bosshard C, et al. Applied Physics Letters, 1996, 69(1): 13.

[5] Cunningham P D, Hayden L M. Optics Express, 2010, 18(23): 23620.

[6] Bosshard C, Spreiter R, Degiorgi L, et al. Physical Review B, 2002, 66(20): 248.

[7] Meier U, Bsch M, Bosshard C, et al. Synthetic Metals, 2000, 109(1): 19.

[8] Jagannathan K, Kalainathan S. Materials Research Bulletin, 2007, 42(11): 1881.

[9] Xu X, Sun Z, Fan K, et al. Scientific Reports, 2015, 5: 12269.

[10] Xu X, Huang L, Fan K, et al. Journal of Materials Chemistry C, 2014, 2(13): 2394.

[11] Han P Y, Tani M, Pan F, et al. Optics Letters, 2000, 25(9): 675.

[12] Kwon O P, Jazbinsek M, Yun H, et al. Crystal Growth & Design, 2008, 8(11): 4021.

[13] Brahadeeswaran S, Onduka S, Takagi M, et al. Crystal Growth & Design, 2006, 6(11): 2463.

[14] Matsukawa T, Hoshina H, Hoshikawa A, et al. Journal of Infrared Millimeter & Terahertz Waves, 2016, 37(6): 540.

[17] Mutter L, Koechlin M, Jazbinek M, et al. Optics Express, 2007, 15(25): 16828.

[18] Thakur M, Xu J, Bhowmik A, et al. Applied Physics Letters, 1999, 74(5): 635.

[19] Thakur M, Meyler S. Macromolecules, 1985, 18(11): 2341.

[20] Zhang X C, Ma X F, Jin Y, et al. Applied Physics Letters, 1992, 61(26): 3080.

[21] Taniuchi T, Shikata J, Ito H, et al. Electronics Letters, 2000, 36(16): 1414.

[22] Taniuchi T, Okada S, Nakanishi H, et al. Journal of Applied Physics, 2004, 95(11): 5984.

[23] Katayama I, Akai R, Bito M, et al. Applied Physics Letters, 2010, 97(2): 021105.

[24] Bing T, Shu-hua W, Ke F, et al. Crystal Research and Technology, 2014, 49(12): 943.

[25] Ruiz B, Jazbinsek M, Günter P, et al. Crystal Growth & Design, 2008, 8(11): 4173.

[27] Tsunesada F, Iwai T, Watanabe T, et al. Journal of Crystal Growth, 2002, 237(1): 2104.

[28] Nahata A, Weling A S, Heinz T F, et al. Applied Physics Letters, 1996, 69(16): 2321.

[29] Schneider A, Neis M, Stillhart M, et al. Journal of the Optical Society of America B, 2006, 23(9): 1822.

[30] Taniuchi T, Shikata J, Osaki N, et al. Electronics Letters, 2002, 40(1): 148.

[31] Stepanov A G, Rogov A, Bonacina L, et al. Optics Express, 2014, 22(18): 21618.

[32] Bass M, Franken P A, Ward J F, et al. Physical Review Letters, 1962, 9(11): 446.

[33] Pan F, Wong M S, Bosshard C, et al. Advanced Materials, 1996, 8(7): 592.

[34] Knopfle G, Schlesser R, Ducret R, et al. Nonlinear Optics, 1995, 9: 143.

[38] Jazbinsek M, Figi H, Hunziker C, et al. Proc SPIE, Linear and Nonlinear Optics of Organic Materials X, 2010, 7774: 77740Q.

[39] Kutty S P, Thakur M, Hazlewood P, et al. Applied Physics Letters, 2005, 87(19): 191111.

[40] Zheng X, Wu S, Sobolewski R, et al. Applied Physics Letters, 2003, 82(15): 2383.

[41] Kaino T, Takayama K, Cai B, et al. Ferroelectrics, 2001, 257(1): 14.

[42] Pan F, McCallion K, Chiappetta M, et al. Applied Physics Letters, 1999, 74(4): 492.

[43] Kaino T, Cai B, Takayama K, et al. Advanced Functional Materials, 2002, 12(9): 599.

[44] Walther M, Jensby K, Keiding S R, et al. Optics Letters, 2000, 25(12): 911.

[45] Dai Z L, Xu X D, Gu Y, et al. 2017, Journal of Chemical Physics, 146(12): 124119.

[47] Glavcheva Z, Umezawa H, Mineno Y, et al. Japanese Journal of Applied Physics, 2005, 44(7R): 5231.

[48] Baldo M, Deutsch M, Burrows P, et al. Advanced Materials, 1998, 10(18): 1505.

[49] Murphy D, Ray M, Wyles J, et al. Proc SPIE, Infrared Technology and Applications XXX, 2004, 5406: 531.