Abstract

We report on the photorefractive effect induced by a polarization grating in the presence of dc voltage in a dye-doped liquid-crystal (DDLC) film. The writing beams are two orthogonally (left- and right-circularly) polarized laser beams that create a spatially polarization-modulated interference field with constant intensity. The photorefractivity is ascribed to the absorption anisotropy of the azo dye. The unique dichroism of a DDLC cell causes a spatial variation in the absorption of light in response to a polarization-modulated interference field. Such a variation establishes a space-charge field in the presence of dc voltage, generating photorefractivity. Two-beam couplings were also verified and measured dynamically during the formation of the photorefractive grating in this study.

© 2004 Optical Society of America

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References

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    [CrossRef]
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    [CrossRef]

2001 (1)

1999 (2)

H. Ono and N. Kawatruki, J. Nonlinear Opt. Phys. Mater. 8, 329 (1999).
[CrossRef]

F. Simoni and O. Francescangeli, J. Phys. Condens. Matter 11, 493 (1999).
[CrossRef]

1998 (1)

1997 (1)

1996 (1)

I. C. Khoo, IEEE J. Quantum Electron. 32, 525 (1996).
[CrossRef]

1995 (1)

G. P. Wiederrecht, B. A. Yoon, and M. R. Wasielewski, Science 270, 1794 (1995).
[CrossRef]

1994 (2)

E. V. Rudenko and A. V. Sukhov, JETP 78, 875 (1994).

I. C. Khoo, H. Li, and Y. Liang, Opt. Lett. 19, 1723 (1994).
[CrossRef] [PubMed]

1984 (1)

Denariez-Roberge, M. M.

Francescangeli, O.

F. Simoni and O. Francescangeli, J. Phys. Condens. Matter 11, 493 (1999).
[CrossRef]

Fuh, A. Y.-G.

Galstyan, T. V.

Golemme, A.

Günter, P.

P. Günter and J. P. Huignard, Photorefractive Materials and Their Applications (Springer-Verlag, Berlin, 1989), Vols. 1 and 2.

Hsu, K.-C.

Huignard, J. P.

P. Günter and J. P. Huignard, Photorefractive Materials and Their Applications (Springer-Verlag, Berlin, 1989), Vols. 1 and 2.

Kawatruki, N.

H. Ono and N. Kawatruki, J. Nonlinear Opt. Phys. Mater. 8, 329 (1999).
[CrossRef]

Khoo, I. C.

Kippelen, B.

Li, H.

Liang, Y.

Liao, C.-C.

Lu, C.-L.

Nikolova, L.

Ono, H.

H. Ono and N. Kawatruki, J. Nonlinear Opt. Phys. Mater. 8, 329 (1999).
[CrossRef]

Peyghambarian, N.

Rudenko, E. V.

E. V. Rudenko and A. V. Sukhov, JETP 78, 875 (1994).

Saad, B.

Simoni, F.

F. Simoni and O. Francescangeli, J. Phys. Condens. Matter 11, 493 (1999).
[CrossRef]

Sukhov, A. V.

E. V. Rudenko and A. V. Sukhov, JETP 78, 875 (1994).

Todorov, T.

Tomova, N.

Tsai, C.-Y.

Volodin, B. L.

Wasielewski, M. R.

G. P. Wiederrecht, B. A. Yoon, and M. R. Wasielewski, Science 270, 1794 (1995).
[CrossRef]

Wiederrecht, G. P.

G. P. Wiederrecht, B. A. Yoon, and M. R. Wasielewski, Science 270, 1794 (1995).
[CrossRef]

Yeh, P.

P. Yeh, Introduction to Photorefractive Nonlinear Optics (Wiley, New York, 1993).

Yoon, B. A.

G. P. Wiederrecht, B. A. Yoon, and M. R. Wasielewski, Science 270, 1794 (1995).
[CrossRef]

Appl. Opt. (1)

IEEE J. Quantum Electron. (1)

I. C. Khoo, IEEE J. Quantum Electron. 32, 525 (1996).
[CrossRef]

J. Nonlinear Opt. Phys. Mater. (1)

H. Ono and N. Kawatruki, J. Nonlinear Opt. Phys. Mater. 8, 329 (1999).
[CrossRef]

J. Phys. Condens. Matter (1)

F. Simoni and O. Francescangeli, J. Phys. Condens. Matter 11, 493 (1999).
[CrossRef]

JETP (1)

E. V. Rudenko and A. V. Sukhov, JETP 78, 875 (1994).

Opt. Lett. (4)

Science (1)

G. P. Wiederrecht, B. A. Yoon, and M. R. Wasielewski, Science 270, 1794 (1995).
[CrossRef]

Other (2)

P. Günter and J. P. Huignard, Photorefractive Materials and Their Applications (Springer-Verlag, Berlin, 1989), Vols. 1 and 2.

P. Yeh, Introduction to Photorefractive Nonlinear Optics (Wiley, New York, 1993).

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Figures (4)

Fig. 1
Fig. 1

(a) Experimental setup for studying the PR effect by polarization holography. (b) Modulated linearly polarized interference pattern created by two mutually orthogonal (left- and right-circularly polarized) writing beams. PG, polarization grating.

Fig. 2
Fig. 2

Stable self-diffraction pattern produced after the DDLC sample is pumped with the writing beams for 100 s at a dc voltage of 3 V.

Fig. 3
Fig. 3

Dynamics of the first-order diffraction of the probe beam during the formation of the PRG.

Fig. 4
Fig. 4

Dynamic measurement of TBC during formation of the PRG.

Equations (3)

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n=n0+n12expiϕeˆ1·eˆ2A1A2*I0×exp-iK·r+c.c.,
I1z=I101+m0-11+m0-1 expγzexp-αz,
I2z=I201+m01+m0 exp-γzexp-αz,

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