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The wedge cell of cholesteric liquid crystal device is designed and fabricated, and doping PM580 (exciton) in the cholesteric liquid crystal, the laser emission action is studied. There appear a series of parallel wedge edges of dislocation lines and different shapes of domain in the wedge cell. The planar state of alignment is confirmed. A second harmonic Nd:YAG 532 nm laser is adopted as a pump light beam, and then one-dimensional tunable laser radiation is obtained and its wavelength interval is approximately 1 nm and tuning range is about 17 nm. In the processs of interaction between the torques of LC and the surface anchoring of direction film, the pitch elongation takes place. The positon of photonic band gap is changed, so the laser radiation wavelength can be tuned in the band edge.
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Keywords:
- cholesteric liquid crystal /
- wedge cell /
- laser radiation
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[2] Beeckman J, Neyts K, Vanbrabant J M P 2011 Opt. Eng. 50 081202
[3] Liu Y J, Sun W M, Liu X Q, Yao L S, Lu X H, Xuan L 2012 Acta Phys. Sin. 61 114211 (in Chinese) [刘永军, 孙伟民, 刘晓颀, 姚丽双, 鲁兴海, 宣丽 2012 61 114211]
[4] Tatsunosuke M, Masahiro K 2011 Mol. Cryst. Liq. Cryst. 544 77
[5] Gevorgyan A H, Kocharian A N 2012 Opt. Commun. 285 854
[6] Lin S H, Lee C R 2011 Opt. Express 19 18199
[7] Park B 2011 J. Korean Phys. Soc. 59 2246
[8] Choi H, Nishimura S, Toyooka T, Ishikawa K, Takezoe H 2011 Adv. Funct. Mater. 21 3430
[9] Lin H K, Huang Y F, Chen A C, Liu P W 2011 Appl. Surf. Sci. 257 9858
[10] Inoue Y, Yoshida H, Inoue K, Shiozaki Y, Kubo H, Fujii A, Ozaki M 2011 Proc. SPIE 8114 811415
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[1] Kopp V I, Fan B, Vithana H K M, Genack A Z 1998 Opt. Lett. 23 1707
[2] Beeckman J, Neyts K, Vanbrabant J M P 2011 Opt. Eng. 50 081202
[3] Liu Y J, Sun W M, Liu X Q, Yao L S, Lu X H, Xuan L 2012 Acta Phys. Sin. 61 114211 (in Chinese) [刘永军, 孙伟民, 刘晓颀, 姚丽双, 鲁兴海, 宣丽 2012 61 114211]
[4] Tatsunosuke M, Masahiro K 2011 Mol. Cryst. Liq. Cryst. 544 77
[5] Gevorgyan A H, Kocharian A N 2012 Opt. Commun. 285 854
[6] Lin S H, Lee C R 2011 Opt. Express 19 18199
[7] Park B 2011 J. Korean Phys. Soc. 59 2246
[8] Choi H, Nishimura S, Toyooka T, Ishikawa K, Takezoe H 2011 Adv. Funct. Mater. 21 3430
[9] Lin H K, Huang Y F, Chen A C, Liu P W 2011 Appl. Surf. Sci. 257 9858
[10] Inoue Y, Yoshida H, Inoue K, Shiozaki Y, Kubo H, Fujii A, Ozaki M 2011 Proc. SPIE 8114 811415
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