Abstract

Optical reorientation measurements in dye-doped nematic liquid crystals are reported. The dye-induced optical torque exceeds significantly the normal optical torque for all anthraquinone dyes investigated. With one of the dyes, optical Freedericksz transition in a planar layer is demonstrated.

© 1992 Optical Society of America

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References

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  1. I. Jánossy, A. D. Lloyd, B. S. Wherrett, Mol. Cryst. Liquid Cryst. 179, 1 (1990).
  2. I. Jánossy, A. D. Lloyd, Mol. Cryst. Liq. Cryst. 203, 77 (1991).
    [Crossref]
  3. I. Jánossy, L. Csillag, A. D. Lloyd, Phys. Rev. A 44, 8410 (1991).
    [Crossref] [PubMed]
  4. A. S. Zolotko, V. F. Kitaeva, N. Kroó, N. N. Sobolev, L. Chillag, JETP Lett. 33, 162 (1980).
  5. S. D. Durbin, S. M. Arakelian, Y. R. Shen, Phys. Rev. Lett. 47, 1411 (1981).
    [Crossref]
  6. S. G. Odulov, Yu. A. Reznikov, M. S. Soskin, A. I. Khizhnyak, Izv. Akad. Nauk SSSR Ser. Fiz. 48, 596 (1984).
  7. M. Sheik-Bahae, A. A. Said, E. W. Van Stryland, Opt. Lett. 14, 955 (1989).
    [Crossref] [PubMed]
  8. I. C. Khoo, in Progress in Optics XXIV, E. Wolf, ed. (North-Holland, New York, 1988).

1991 (2)

I. Jánossy, A. D. Lloyd, Mol. Cryst. Liq. Cryst. 203, 77 (1991).
[Crossref]

I. Jánossy, L. Csillag, A. D. Lloyd, Phys. Rev. A 44, 8410 (1991).
[Crossref] [PubMed]

1990 (1)

I. Jánossy, A. D. Lloyd, B. S. Wherrett, Mol. Cryst. Liquid Cryst. 179, 1 (1990).

1989 (1)

1984 (1)

S. G. Odulov, Yu. A. Reznikov, M. S. Soskin, A. I. Khizhnyak, Izv. Akad. Nauk SSSR Ser. Fiz. 48, 596 (1984).

1981 (1)

S. D. Durbin, S. M. Arakelian, Y. R. Shen, Phys. Rev. Lett. 47, 1411 (1981).
[Crossref]

1980 (1)

A. S. Zolotko, V. F. Kitaeva, N. Kroó, N. N. Sobolev, L. Chillag, JETP Lett. 33, 162 (1980).

Arakelian, S. M.

S. D. Durbin, S. M. Arakelian, Y. R. Shen, Phys. Rev. Lett. 47, 1411 (1981).
[Crossref]

Chillag, L.

A. S. Zolotko, V. F. Kitaeva, N. Kroó, N. N. Sobolev, L. Chillag, JETP Lett. 33, 162 (1980).

Csillag, L.

I. Jánossy, L. Csillag, A. D. Lloyd, Phys. Rev. A 44, 8410 (1991).
[Crossref] [PubMed]

Durbin, S. D.

S. D. Durbin, S. M. Arakelian, Y. R. Shen, Phys. Rev. Lett. 47, 1411 (1981).
[Crossref]

Jánossy, I.

I. Jánossy, A. D. Lloyd, Mol. Cryst. Liq. Cryst. 203, 77 (1991).
[Crossref]

I. Jánossy, L. Csillag, A. D. Lloyd, Phys. Rev. A 44, 8410 (1991).
[Crossref] [PubMed]

I. Jánossy, A. D. Lloyd, B. S. Wherrett, Mol. Cryst. Liquid Cryst. 179, 1 (1990).

Khizhnyak, A. I.

S. G. Odulov, Yu. A. Reznikov, M. S. Soskin, A. I. Khizhnyak, Izv. Akad. Nauk SSSR Ser. Fiz. 48, 596 (1984).

Khoo, I. C.

I. C. Khoo, in Progress in Optics XXIV, E. Wolf, ed. (North-Holland, New York, 1988).

Kitaeva, V. F.

A. S. Zolotko, V. F. Kitaeva, N. Kroó, N. N. Sobolev, L. Chillag, JETP Lett. 33, 162 (1980).

Kroó, N.

A. S. Zolotko, V. F. Kitaeva, N. Kroó, N. N. Sobolev, L. Chillag, JETP Lett. 33, 162 (1980).

Lloyd, A. D.

I. Jánossy, L. Csillag, A. D. Lloyd, Phys. Rev. A 44, 8410 (1991).
[Crossref] [PubMed]

I. Jánossy, A. D. Lloyd, Mol. Cryst. Liq. Cryst. 203, 77 (1991).
[Crossref]

I. Jánossy, A. D. Lloyd, B. S. Wherrett, Mol. Cryst. Liquid Cryst. 179, 1 (1990).

Odulov, S. G.

S. G. Odulov, Yu. A. Reznikov, M. S. Soskin, A. I. Khizhnyak, Izv. Akad. Nauk SSSR Ser. Fiz. 48, 596 (1984).

Reznikov, Yu. A.

S. G. Odulov, Yu. A. Reznikov, M. S. Soskin, A. I. Khizhnyak, Izv. Akad. Nauk SSSR Ser. Fiz. 48, 596 (1984).

Said, A. A.

Sheik-Bahae, M.

Shen, Y. R.

S. D. Durbin, S. M. Arakelian, Y. R. Shen, Phys. Rev. Lett. 47, 1411 (1981).
[Crossref]

Sobolev, N. N.

A. S. Zolotko, V. F. Kitaeva, N. Kroó, N. N. Sobolev, L. Chillag, JETP Lett. 33, 162 (1980).

Soskin, M. S.

S. G. Odulov, Yu. A. Reznikov, M. S. Soskin, A. I. Khizhnyak, Izv. Akad. Nauk SSSR Ser. Fiz. 48, 596 (1984).

Van Stryland, E. W.

Wherrett, B. S.

I. Jánossy, A. D. Lloyd, B. S. Wherrett, Mol. Cryst. Liquid Cryst. 179, 1 (1990).

Zolotko, A. S.

A. S. Zolotko, V. F. Kitaeva, N. Kroó, N. N. Sobolev, L. Chillag, JETP Lett. 33, 162 (1980).

Izv. Akad. Nauk SSSR Ser. Fiz. (1)

S. G. Odulov, Yu. A. Reznikov, M. S. Soskin, A. I. Khizhnyak, Izv. Akad. Nauk SSSR Ser. Fiz. 48, 596 (1984).

JETP Lett. (1)

A. S. Zolotko, V. F. Kitaeva, N. Kroó, N. N. Sobolev, L. Chillag, JETP Lett. 33, 162 (1980).

Mol. Cryst. Liq. Cryst. (1)

I. Jánossy, A. D. Lloyd, Mol. Cryst. Liq. Cryst. 203, 77 (1991).
[Crossref]

Mol. Cryst. Liquid Cryst. (1)

I. Jánossy, A. D. Lloyd, B. S. Wherrett, Mol. Cryst. Liquid Cryst. 179, 1 (1990).

Opt. Lett. (1)

Phys. Rev. A (1)

I. Jánossy, L. Csillag, A. D. Lloyd, Phys. Rev. A 44, 8410 (1991).
[Crossref] [PubMed]

Phys. Rev. Lett. (1)

S. D. Durbin, S. M. Arakelian, Y. R. Shen, Phys. Rev. Lett. 47, 1411 (1981).
[Crossref]

Other (1)

I. C. Khoo, in Progress in Optics XXIV, E. Wolf, ed. (North-Holland, New York, 1988).

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Figures (2)

Fig. 1
Fig. 1

Z-scan curve of the host nematic (P = 8 mW), the AQ2-doped sample (P = 0.19 mW), and the D4-doped sample (P = 0.46 mW). The curves are normalized to the intensities, measured at large distances from the focal point.

Fig. 2
Fig. 2

Effect of a low-frequency (1-kHz) electric field on the Z-scan curve for D4 at various voltages.

Tables (1)

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Table 1 Values of η and η/α for the Different Dyes

Equations (5)

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Γ dye = η Γ opt ,             Γ opt = 0 a ( nE ) ( n × E ) .
Γ light = ( 1 + η ) Γ opt ,
Δ v dye / P dye = ( 1 + η ) Δ v host / P host .
P av = P 1 - exp ( - α d ) α d .
η = Δ v dye P dye av P host Δ v host - 1.

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