Abstract

We report the observation of nematic-to-isotropic transition induced by two-photon absorption in azobenzene liquid crystals. Optical Kerr effect was used to monitor the transition through the pump–probe scheme, and the pump threshold for the transition showed the expected dependence on pump energy per pulse. Qualitatively different behaviors of the transitions induced one- and two-photon excitations were observed.

© 2007 Optical Society of America

Full Article  |  PDF Article

References

  • View by:
  • |
  • |
  • |

  1. I. C. Khoo and S. T. Wu, Optics and Nonlinear Optics of Liquid Crystals (World Scientific, 1993).
  2. K. Ichimura, "Photoalignment of liquid crystal systems," Chem. Rev. (Washington, D.C.) 100, 1847-1873 (2000).
    [CrossRef]
  3. S. Yoneyama, T. Yamamoto, O. Tsutsumi, A. Kanazawa, T. Shiono, and T. Ikeda, "High performance material for holographic gratings by means of a photoresponsive polymer liquid crystal containing a tolane moiety with high birefringence," Macromolecules 35, 8751-8758 (2002).
    [CrossRef]
  4. T. Yamamoto, M. Hasegawa, A. Kanazawa, T. Shiono, and T. Ikeda, "Phase-type gratings formed by photochemical phase transition of polymer azobenzene liquid crystals: enhancement of diffraction efficiency by spatial modulation of molecular alignment," J. Phys. Chem. B 103, 9873-9878 (1999).
    [CrossRef]
  5. N. Tabiryan, U. Hrozhyk, and S. Serak, "Nonlinear refraction in photoinduced isotropic state of liquid crystalline azobenzenes," Phys. Rev. Lett. 93, 113901 (2004).
    [CrossRef] [PubMed]
  6. T. Ikeda and O. Tsutsumi, "Optical switching and image storage by means of azobenzene liquid-crystal films," Science 268, 1873-1875 (1995).
    [CrossRef] [PubMed]
  7. Y. Lansac, M. A. Glaser, N. A. Clark, and O. D. Lavrentovich, "Photocontrolled nanophase segregation in a liquid-crystal solvent," Nature (London) 398, 54-57 (1999).
    [CrossRef]
  8. S. K. Prasad and G. G. Nair, "Effects of photo-controlled nanophase segregation in a re-entrant nematic liquid crystal," Adv. Mater. (Weinheim, Ger.) 13, 40-43 (2001).
    [CrossRef]
  9. N. V. Tabiryan, S. V. Serak, and V. A. Grozhik, "Photoinduced critical opalescence and reversible all-optical switching in photosensitive liquid crystals," J. Opt. Soc. Am. B 20, 538-544 (2003).
    [CrossRef]
  10. S. K. Prasad, G. G. Nair, K. L. Sandhya, and D. S. S. Rao, "Photoinduced phase transitions in liquid crystalline systems," Curr. Sci. 86, 815-823 (2004).
  11. S. K. Prasad, G. G. Nair, and G. Hedge, "Dynamic self-assembly of the liquid-crystalline smectic A phase," Adv. Mater. (Weinheim, Ger.) 17, 2086-2091 (2005).
    [CrossRef]
  12. X. Xingsheng, M. Hai, W. Pei, L. Zhongcheng, and Z. Qijin, "Multi-photon-absorption-induced birefringent grating in azobenzene-doped polymethyl methacrylate optical fibres," J. Opt. A, Pure Appl. Opt. 4, L5-L7 (2007).
    [CrossRef]
  13. J. Si, J. Qiu, J. Guo, G. Qian, M. Wang, and K. Hirao, "Photoinduced birefringence of azodye-doped materials by a femtosecond laser," Appl. Opt. 42, 7170-7173 (2003).
    [CrossRef]
  14. O. Tsutsumi, A. Ohashi, T. Ikeda, S. R. Marder, and J. W. Perry, "One- and two-photon induced phase transition behavior of nematic liquid crystals containing bis-styrl benzene as a photoresponsive chromophore," Thin Solid Films 509, 118-122 (2006).
    [CrossRef]
  15. U. Hrozhyk, S. Serak, and N. Tabiryan, "Wide temperature range azobenzene nematic and smectic LC materials," Mol. Cryst. Liq. Cryst. 454, 235-245 (2006).
    [CrossRef]
  16. K. De Boni, J. J. Rodrigues Jr., D. S. dos Santos Jr., C. H. T. P. Silva, D. T. Balogh, O. N. Oliveira Jr., S. C. Zilio, L. Misoguti, and C. R. Medonca, "Two-photon absorption in azoaromatic compunds," Chem. Phys. Lett. 361, 209-213 (2002).
    [CrossRef]

2007

X. Xingsheng, M. Hai, W. Pei, L. Zhongcheng, and Z. Qijin, "Multi-photon-absorption-induced birefringent grating in azobenzene-doped polymethyl methacrylate optical fibres," J. Opt. A, Pure Appl. Opt. 4, L5-L7 (2007).
[CrossRef]

2006

O. Tsutsumi, A. Ohashi, T. Ikeda, S. R. Marder, and J. W. Perry, "One- and two-photon induced phase transition behavior of nematic liquid crystals containing bis-styrl benzene as a photoresponsive chromophore," Thin Solid Films 509, 118-122 (2006).
[CrossRef]

U. Hrozhyk, S. Serak, and N. Tabiryan, "Wide temperature range azobenzene nematic and smectic LC materials," Mol. Cryst. Liq. Cryst. 454, 235-245 (2006).
[CrossRef]

2005

S. K. Prasad, G. G. Nair, and G. Hedge, "Dynamic self-assembly of the liquid-crystalline smectic A phase," Adv. Mater. (Weinheim, Ger.) 17, 2086-2091 (2005).
[CrossRef]

2004

N. Tabiryan, U. Hrozhyk, and S. Serak, "Nonlinear refraction in photoinduced isotropic state of liquid crystalline azobenzenes," Phys. Rev. Lett. 93, 113901 (2004).
[CrossRef] [PubMed]

S. K. Prasad, G. G. Nair, K. L. Sandhya, and D. S. S. Rao, "Photoinduced phase transitions in liquid crystalline systems," Curr. Sci. 86, 815-823 (2004).

2003

2002

K. De Boni, J. J. Rodrigues Jr., D. S. dos Santos Jr., C. H. T. P. Silva, D. T. Balogh, O. N. Oliveira Jr., S. C. Zilio, L. Misoguti, and C. R. Medonca, "Two-photon absorption in azoaromatic compunds," Chem. Phys. Lett. 361, 209-213 (2002).
[CrossRef]

S. Yoneyama, T. Yamamoto, O. Tsutsumi, A. Kanazawa, T. Shiono, and T. Ikeda, "High performance material for holographic gratings by means of a photoresponsive polymer liquid crystal containing a tolane moiety with high birefringence," Macromolecules 35, 8751-8758 (2002).
[CrossRef]

2001

S. K. Prasad and G. G. Nair, "Effects of photo-controlled nanophase segregation in a re-entrant nematic liquid crystal," Adv. Mater. (Weinheim, Ger.) 13, 40-43 (2001).
[CrossRef]

2000

K. Ichimura, "Photoalignment of liquid crystal systems," Chem. Rev. (Washington, D.C.) 100, 1847-1873 (2000).
[CrossRef]

1999

Y. Lansac, M. A. Glaser, N. A. Clark, and O. D. Lavrentovich, "Photocontrolled nanophase segregation in a liquid-crystal solvent," Nature (London) 398, 54-57 (1999).
[CrossRef]

T. Yamamoto, M. Hasegawa, A. Kanazawa, T. Shiono, and T. Ikeda, "Phase-type gratings formed by photochemical phase transition of polymer azobenzene liquid crystals: enhancement of diffraction efficiency by spatial modulation of molecular alignment," J. Phys. Chem. B 103, 9873-9878 (1999).
[CrossRef]

1995

T. Ikeda and O. Tsutsumi, "Optical switching and image storage by means of azobenzene liquid-crystal films," Science 268, 1873-1875 (1995).
[CrossRef] [PubMed]

Balogh, D. T.

K. De Boni, J. J. Rodrigues Jr., D. S. dos Santos Jr., C. H. T. P. Silva, D. T. Balogh, O. N. Oliveira Jr., S. C. Zilio, L. Misoguti, and C. R. Medonca, "Two-photon absorption in azoaromatic compunds," Chem. Phys. Lett. 361, 209-213 (2002).
[CrossRef]

Boni, K. De

K. De Boni, J. J. Rodrigues Jr., D. S. dos Santos Jr., C. H. T. P. Silva, D. T. Balogh, O. N. Oliveira Jr., S. C. Zilio, L. Misoguti, and C. R. Medonca, "Two-photon absorption in azoaromatic compunds," Chem. Phys. Lett. 361, 209-213 (2002).
[CrossRef]

Clark, N. A.

Y. Lansac, M. A. Glaser, N. A. Clark, and O. D. Lavrentovich, "Photocontrolled nanophase segregation in a liquid-crystal solvent," Nature (London) 398, 54-57 (1999).
[CrossRef]

dos Santos, D. S.

K. De Boni, J. J. Rodrigues Jr., D. S. dos Santos Jr., C. H. T. P. Silva, D. T. Balogh, O. N. Oliveira Jr., S. C. Zilio, L. Misoguti, and C. R. Medonca, "Two-photon absorption in azoaromatic compunds," Chem. Phys. Lett. 361, 209-213 (2002).
[CrossRef]

Glaser, M. A.

Y. Lansac, M. A. Glaser, N. A. Clark, and O. D. Lavrentovich, "Photocontrolled nanophase segregation in a liquid-crystal solvent," Nature (London) 398, 54-57 (1999).
[CrossRef]

Grozhik, V. A.

Guo, J.

Hai, M.

X. Xingsheng, M. Hai, W. Pei, L. Zhongcheng, and Z. Qijin, "Multi-photon-absorption-induced birefringent grating in azobenzene-doped polymethyl methacrylate optical fibres," J. Opt. A, Pure Appl. Opt. 4, L5-L7 (2007).
[CrossRef]

Hasegawa, M.

T. Yamamoto, M. Hasegawa, A. Kanazawa, T. Shiono, and T. Ikeda, "Phase-type gratings formed by photochemical phase transition of polymer azobenzene liquid crystals: enhancement of diffraction efficiency by spatial modulation of molecular alignment," J. Phys. Chem. B 103, 9873-9878 (1999).
[CrossRef]

Hedge, G.

S. K. Prasad, G. G. Nair, and G. Hedge, "Dynamic self-assembly of the liquid-crystalline smectic A phase," Adv. Mater. (Weinheim, Ger.) 17, 2086-2091 (2005).
[CrossRef]

Hirao, K.

Hrozhyk, U.

U. Hrozhyk, S. Serak, and N. Tabiryan, "Wide temperature range azobenzene nematic and smectic LC materials," Mol. Cryst. Liq. Cryst. 454, 235-245 (2006).
[CrossRef]

N. Tabiryan, U. Hrozhyk, and S. Serak, "Nonlinear refraction in photoinduced isotropic state of liquid crystalline azobenzenes," Phys. Rev. Lett. 93, 113901 (2004).
[CrossRef] [PubMed]

Ichimura, K.

K. Ichimura, "Photoalignment of liquid crystal systems," Chem. Rev. (Washington, D.C.) 100, 1847-1873 (2000).
[CrossRef]

Ikeda, T.

O. Tsutsumi, A. Ohashi, T. Ikeda, S. R. Marder, and J. W. Perry, "One- and two-photon induced phase transition behavior of nematic liquid crystals containing bis-styrl benzene as a photoresponsive chromophore," Thin Solid Films 509, 118-122 (2006).
[CrossRef]

S. Yoneyama, T. Yamamoto, O. Tsutsumi, A. Kanazawa, T. Shiono, and T. Ikeda, "High performance material for holographic gratings by means of a photoresponsive polymer liquid crystal containing a tolane moiety with high birefringence," Macromolecules 35, 8751-8758 (2002).
[CrossRef]

T. Yamamoto, M. Hasegawa, A. Kanazawa, T. Shiono, and T. Ikeda, "Phase-type gratings formed by photochemical phase transition of polymer azobenzene liquid crystals: enhancement of diffraction efficiency by spatial modulation of molecular alignment," J. Phys. Chem. B 103, 9873-9878 (1999).
[CrossRef]

T. Ikeda and O. Tsutsumi, "Optical switching and image storage by means of azobenzene liquid-crystal films," Science 268, 1873-1875 (1995).
[CrossRef] [PubMed]

Kanazawa, A.

S. Yoneyama, T. Yamamoto, O. Tsutsumi, A. Kanazawa, T. Shiono, and T. Ikeda, "High performance material for holographic gratings by means of a photoresponsive polymer liquid crystal containing a tolane moiety with high birefringence," Macromolecules 35, 8751-8758 (2002).
[CrossRef]

T. Yamamoto, M. Hasegawa, A. Kanazawa, T. Shiono, and T. Ikeda, "Phase-type gratings formed by photochemical phase transition of polymer azobenzene liquid crystals: enhancement of diffraction efficiency by spatial modulation of molecular alignment," J. Phys. Chem. B 103, 9873-9878 (1999).
[CrossRef]

Khoo, I. C.

I. C. Khoo and S. T. Wu, Optics and Nonlinear Optics of Liquid Crystals (World Scientific, 1993).

Lansac, Y.

Y. Lansac, M. A. Glaser, N. A. Clark, and O. D. Lavrentovich, "Photocontrolled nanophase segregation in a liquid-crystal solvent," Nature (London) 398, 54-57 (1999).
[CrossRef]

Lavrentovich, O. D.

Y. Lansac, M. A. Glaser, N. A. Clark, and O. D. Lavrentovich, "Photocontrolled nanophase segregation in a liquid-crystal solvent," Nature (London) 398, 54-57 (1999).
[CrossRef]

Marder, S. R.

O. Tsutsumi, A. Ohashi, T. Ikeda, S. R. Marder, and J. W. Perry, "One- and two-photon induced phase transition behavior of nematic liquid crystals containing bis-styrl benzene as a photoresponsive chromophore," Thin Solid Films 509, 118-122 (2006).
[CrossRef]

Medonca, C. R.

K. De Boni, J. J. Rodrigues Jr., D. S. dos Santos Jr., C. H. T. P. Silva, D. T. Balogh, O. N. Oliveira Jr., S. C. Zilio, L. Misoguti, and C. R. Medonca, "Two-photon absorption in azoaromatic compunds," Chem. Phys. Lett. 361, 209-213 (2002).
[CrossRef]

Misoguti, L.

K. De Boni, J. J. Rodrigues Jr., D. S. dos Santos Jr., C. H. T. P. Silva, D. T. Balogh, O. N. Oliveira Jr., S. C. Zilio, L. Misoguti, and C. R. Medonca, "Two-photon absorption in azoaromatic compunds," Chem. Phys. Lett. 361, 209-213 (2002).
[CrossRef]

Nair, G. G.

S. K. Prasad, G. G. Nair, and G. Hedge, "Dynamic self-assembly of the liquid-crystalline smectic A phase," Adv. Mater. (Weinheim, Ger.) 17, 2086-2091 (2005).
[CrossRef]

S. K. Prasad, G. G. Nair, K. L. Sandhya, and D. S. S. Rao, "Photoinduced phase transitions in liquid crystalline systems," Curr. Sci. 86, 815-823 (2004).

S. K. Prasad and G. G. Nair, "Effects of photo-controlled nanophase segregation in a re-entrant nematic liquid crystal," Adv. Mater. (Weinheim, Ger.) 13, 40-43 (2001).
[CrossRef]

Ohashi, A.

O. Tsutsumi, A. Ohashi, T. Ikeda, S. R. Marder, and J. W. Perry, "One- and two-photon induced phase transition behavior of nematic liquid crystals containing bis-styrl benzene as a photoresponsive chromophore," Thin Solid Films 509, 118-122 (2006).
[CrossRef]

Oliveira, O. N.

K. De Boni, J. J. Rodrigues Jr., D. S. dos Santos Jr., C. H. T. P. Silva, D. T. Balogh, O. N. Oliveira Jr., S. C. Zilio, L. Misoguti, and C. R. Medonca, "Two-photon absorption in azoaromatic compunds," Chem. Phys. Lett. 361, 209-213 (2002).
[CrossRef]

Pei, W.

X. Xingsheng, M. Hai, W. Pei, L. Zhongcheng, and Z. Qijin, "Multi-photon-absorption-induced birefringent grating in azobenzene-doped polymethyl methacrylate optical fibres," J. Opt. A, Pure Appl. Opt. 4, L5-L7 (2007).
[CrossRef]

Perry, J. W.

O. Tsutsumi, A. Ohashi, T. Ikeda, S. R. Marder, and J. W. Perry, "One- and two-photon induced phase transition behavior of nematic liquid crystals containing bis-styrl benzene as a photoresponsive chromophore," Thin Solid Films 509, 118-122 (2006).
[CrossRef]

Prasad, S. K.

S. K. Prasad, G. G. Nair, and G. Hedge, "Dynamic self-assembly of the liquid-crystalline smectic A phase," Adv. Mater. (Weinheim, Ger.) 17, 2086-2091 (2005).
[CrossRef]

S. K. Prasad, G. G. Nair, K. L. Sandhya, and D. S. S. Rao, "Photoinduced phase transitions in liquid crystalline systems," Curr. Sci. 86, 815-823 (2004).

S. K. Prasad and G. G. Nair, "Effects of photo-controlled nanophase segregation in a re-entrant nematic liquid crystal," Adv. Mater. (Weinheim, Ger.) 13, 40-43 (2001).
[CrossRef]

Qian, G.

Qijin, Z.

X. Xingsheng, M. Hai, W. Pei, L. Zhongcheng, and Z. Qijin, "Multi-photon-absorption-induced birefringent grating in azobenzene-doped polymethyl methacrylate optical fibres," J. Opt. A, Pure Appl. Opt. 4, L5-L7 (2007).
[CrossRef]

Qiu, J.

Rao, D. S. S.

S. K. Prasad, G. G. Nair, K. L. Sandhya, and D. S. S. Rao, "Photoinduced phase transitions in liquid crystalline systems," Curr. Sci. 86, 815-823 (2004).

Rodrigues, J. J.

K. De Boni, J. J. Rodrigues Jr., D. S. dos Santos Jr., C. H. T. P. Silva, D. T. Balogh, O. N. Oliveira Jr., S. C. Zilio, L. Misoguti, and C. R. Medonca, "Two-photon absorption in azoaromatic compunds," Chem. Phys. Lett. 361, 209-213 (2002).
[CrossRef]

Sandhya, K. L.

S. K. Prasad, G. G. Nair, K. L. Sandhya, and D. S. S. Rao, "Photoinduced phase transitions in liquid crystalline systems," Curr. Sci. 86, 815-823 (2004).

Serak, S.

U. Hrozhyk, S. Serak, and N. Tabiryan, "Wide temperature range azobenzene nematic and smectic LC materials," Mol. Cryst. Liq. Cryst. 454, 235-245 (2006).
[CrossRef]

N. Tabiryan, U. Hrozhyk, and S. Serak, "Nonlinear refraction in photoinduced isotropic state of liquid crystalline azobenzenes," Phys. Rev. Lett. 93, 113901 (2004).
[CrossRef] [PubMed]

Serak, S. V.

Shiono, T.

S. Yoneyama, T. Yamamoto, O. Tsutsumi, A. Kanazawa, T. Shiono, and T. Ikeda, "High performance material for holographic gratings by means of a photoresponsive polymer liquid crystal containing a tolane moiety with high birefringence," Macromolecules 35, 8751-8758 (2002).
[CrossRef]

T. Yamamoto, M. Hasegawa, A. Kanazawa, T. Shiono, and T. Ikeda, "Phase-type gratings formed by photochemical phase transition of polymer azobenzene liquid crystals: enhancement of diffraction efficiency by spatial modulation of molecular alignment," J. Phys. Chem. B 103, 9873-9878 (1999).
[CrossRef]

Si, J.

Silva, C. H. T. P.

K. De Boni, J. J. Rodrigues Jr., D. S. dos Santos Jr., C. H. T. P. Silva, D. T. Balogh, O. N. Oliveira Jr., S. C. Zilio, L. Misoguti, and C. R. Medonca, "Two-photon absorption in azoaromatic compunds," Chem. Phys. Lett. 361, 209-213 (2002).
[CrossRef]

Tabiryan, N.

U. Hrozhyk, S. Serak, and N. Tabiryan, "Wide temperature range azobenzene nematic and smectic LC materials," Mol. Cryst. Liq. Cryst. 454, 235-245 (2006).
[CrossRef]

N. Tabiryan, U. Hrozhyk, and S. Serak, "Nonlinear refraction in photoinduced isotropic state of liquid crystalline azobenzenes," Phys. Rev. Lett. 93, 113901 (2004).
[CrossRef] [PubMed]

Tabiryan, N. V.

Tsutsumi, O.

O. Tsutsumi, A. Ohashi, T. Ikeda, S. R. Marder, and J. W. Perry, "One- and two-photon induced phase transition behavior of nematic liquid crystals containing bis-styrl benzene as a photoresponsive chromophore," Thin Solid Films 509, 118-122 (2006).
[CrossRef]

S. Yoneyama, T. Yamamoto, O. Tsutsumi, A. Kanazawa, T. Shiono, and T. Ikeda, "High performance material for holographic gratings by means of a photoresponsive polymer liquid crystal containing a tolane moiety with high birefringence," Macromolecules 35, 8751-8758 (2002).
[CrossRef]

T. Ikeda and O. Tsutsumi, "Optical switching and image storage by means of azobenzene liquid-crystal films," Science 268, 1873-1875 (1995).
[CrossRef] [PubMed]

Wang, M.

Wu, S. T.

I. C. Khoo and S. T. Wu, Optics and Nonlinear Optics of Liquid Crystals (World Scientific, 1993).

Xingsheng, X.

X. Xingsheng, M. Hai, W. Pei, L. Zhongcheng, and Z. Qijin, "Multi-photon-absorption-induced birefringent grating in azobenzene-doped polymethyl methacrylate optical fibres," J. Opt. A, Pure Appl. Opt. 4, L5-L7 (2007).
[CrossRef]

Yamamoto, T.

S. Yoneyama, T. Yamamoto, O. Tsutsumi, A. Kanazawa, T. Shiono, and T. Ikeda, "High performance material for holographic gratings by means of a photoresponsive polymer liquid crystal containing a tolane moiety with high birefringence," Macromolecules 35, 8751-8758 (2002).
[CrossRef]

T. Yamamoto, M. Hasegawa, A. Kanazawa, T. Shiono, and T. Ikeda, "Phase-type gratings formed by photochemical phase transition of polymer azobenzene liquid crystals: enhancement of diffraction efficiency by spatial modulation of molecular alignment," J. Phys. Chem. B 103, 9873-9878 (1999).
[CrossRef]

Yoneyama, S.

S. Yoneyama, T. Yamamoto, O. Tsutsumi, A. Kanazawa, T. Shiono, and T. Ikeda, "High performance material for holographic gratings by means of a photoresponsive polymer liquid crystal containing a tolane moiety with high birefringence," Macromolecules 35, 8751-8758 (2002).
[CrossRef]

Zhongcheng, L.

X. Xingsheng, M. Hai, W. Pei, L. Zhongcheng, and Z. Qijin, "Multi-photon-absorption-induced birefringent grating in azobenzene-doped polymethyl methacrylate optical fibres," J. Opt. A, Pure Appl. Opt. 4, L5-L7 (2007).
[CrossRef]

Zilio, S. C.

K. De Boni, J. J. Rodrigues Jr., D. S. dos Santos Jr., C. H. T. P. Silva, D. T. Balogh, O. N. Oliveira Jr., S. C. Zilio, L. Misoguti, and C. R. Medonca, "Two-photon absorption in azoaromatic compunds," Chem. Phys. Lett. 361, 209-213 (2002).
[CrossRef]

Adv. Mater. (Weinheim, Ger.)

S. K. Prasad and G. G. Nair, "Effects of photo-controlled nanophase segregation in a re-entrant nematic liquid crystal," Adv. Mater. (Weinheim, Ger.) 13, 40-43 (2001).
[CrossRef]

S. K. Prasad, G. G. Nair, and G. Hedge, "Dynamic self-assembly of the liquid-crystalline smectic A phase," Adv. Mater. (Weinheim, Ger.) 17, 2086-2091 (2005).
[CrossRef]

Appl. Opt.

Chem. Phys. Lett.

K. De Boni, J. J. Rodrigues Jr., D. S. dos Santos Jr., C. H. T. P. Silva, D. T. Balogh, O. N. Oliveira Jr., S. C. Zilio, L. Misoguti, and C. R. Medonca, "Two-photon absorption in azoaromatic compunds," Chem. Phys. Lett. 361, 209-213 (2002).
[CrossRef]

Chem. Rev. (Washington, D.C.)

K. Ichimura, "Photoalignment of liquid crystal systems," Chem. Rev. (Washington, D.C.) 100, 1847-1873 (2000).
[CrossRef]

Curr. Sci.

S. K. Prasad, G. G. Nair, K. L. Sandhya, and D. S. S. Rao, "Photoinduced phase transitions in liquid crystalline systems," Curr. Sci. 86, 815-823 (2004).

J. Opt. A, Pure Appl. Opt.

X. Xingsheng, M. Hai, W. Pei, L. Zhongcheng, and Z. Qijin, "Multi-photon-absorption-induced birefringent grating in azobenzene-doped polymethyl methacrylate optical fibres," J. Opt. A, Pure Appl. Opt. 4, L5-L7 (2007).
[CrossRef]

J. Opt. Soc. Am. B

J. Phys. Chem. B

T. Yamamoto, M. Hasegawa, A. Kanazawa, T. Shiono, and T. Ikeda, "Phase-type gratings formed by photochemical phase transition of polymer azobenzene liquid crystals: enhancement of diffraction efficiency by spatial modulation of molecular alignment," J. Phys. Chem. B 103, 9873-9878 (1999).
[CrossRef]

Macromolecules

S. Yoneyama, T. Yamamoto, O. Tsutsumi, A. Kanazawa, T. Shiono, and T. Ikeda, "High performance material for holographic gratings by means of a photoresponsive polymer liquid crystal containing a tolane moiety with high birefringence," Macromolecules 35, 8751-8758 (2002).
[CrossRef]

Mol. Cryst. Liq. Cryst.

U. Hrozhyk, S. Serak, and N. Tabiryan, "Wide temperature range azobenzene nematic and smectic LC materials," Mol. Cryst. Liq. Cryst. 454, 235-245 (2006).
[CrossRef]

Nature (London)

Y. Lansac, M. A. Glaser, N. A. Clark, and O. D. Lavrentovich, "Photocontrolled nanophase segregation in a liquid-crystal solvent," Nature (London) 398, 54-57 (1999).
[CrossRef]

Phys. Rev. Lett.

N. Tabiryan, U. Hrozhyk, and S. Serak, "Nonlinear refraction in photoinduced isotropic state of liquid crystalline azobenzenes," Phys. Rev. Lett. 93, 113901 (2004).
[CrossRef] [PubMed]

Science

T. Ikeda and O. Tsutsumi, "Optical switching and image storage by means of azobenzene liquid-crystal films," Science 268, 1873-1875 (1995).
[CrossRef] [PubMed]

Thin Solid Films

O. Tsutsumi, A. Ohashi, T. Ikeda, S. R. Marder, and J. W. Perry, "One- and two-photon induced phase transition behavior of nematic liquid crystals containing bis-styrl benzene as a photoresponsive chromophore," Thin Solid Films 509, 118-122 (2006).
[CrossRef]

Other

I. C. Khoo and S. T. Wu, Optics and Nonlinear Optics of Liquid Crystals (World Scientific, 1993).

Cited By

OSA participates in CrossRef's Cited-By Linking service. Citing articles from OSA journals and other participating publishers are listed here.

Alert me when this article is cited.


Figures (4)

Fig. 1
Fig. 1

Absorption spectrum and molecular structure of the liquid crystal DAAB-307.

Fig. 2
Fig. 2

Schematic of the experimental setup. Pump and probe beams overlap spatially at the sample. Polarizes P1 and P2 are oriented along x ̂ and y ̂ , respectively. The director of the nematic LC sample is aligned along x ̂ + y ̂ . Pump polarization is along y ̂ . Photodetectors PD1 and PD2 measure the light transmitted and redirected by P2, respectively.

Fig. 3
Fig. 3

Typical transmitted (black curve) and optical Kerr (gray curve) signals versus time. Pump beam was at (a) 355 nm and (b) 640 nm and was turned on at t = 0 . t S and t F denote the times of onset and completion of the phase transition, respectively.

Fig. 4
Fig. 4

(a) t S and (b) t F versus pump energy per pulse, in log–log scale, for pump wavelength at 355 nm (solid circles) and 640 nm (empty circles), respectively. For the 640 nm case, the labeled pump energies have been divided by 10 for ease of comparison. Solid lines are power-law fits with powers of 1 and 2 for the cases of pumping at 355 nm (one-photon) and 640 nm (two-photon), respectively.

Equations (6)

Equations on this page are rendered with MathJax. Learn more.

d I d z = α I ( one - photon ) ,
d I d z = β I 2 ( two - photon ) ,
I ( z ) = I o e α z ( one - photon ) ,
I ( z ) = I o ( 1 + β I o z ) 1 I o ( 1 β I o z ) ( two - photon ) ,
N c i s = ( 1 e α L ) E o r t ( h ν ) 1 ( one - photon ) ,
N c i s = ( β I o L ) E o r t ( 2 h ν ) 1 ( two - photon ) ,

Metrics