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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Vol. 19, Iss. 12 — Dec. 2, 2002
  • pp: 2904–2910

Enhanced photocurrent in photo-emf experiments in pure and doped absorbing photorefractive crystals

Luis Mosquera and Jaime Frejlich  »View Author Affiliations


JOSA B, Vol. 19, Issue 12, pp. 2904-2910 (2002)
http://dx.doi.org/10.1364/JOSAB.19.002904


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Abstract

We report a mathematical formulation that successfully describes the holographic photocurrent that is produced, in strongly absorbing photorefractive materials, by the action of a pattern of interference fringes of light vibrating sinusoidally with large amplitude. The large vibrating amplitude produces a sensible enhancement of the photocurrent signal and in this way facilitates measurements. We also show that taking account of the bulk light absorption of the sample is essential for adequately describing the experiment. We measure the first temporal harmonic of the photocurrent, without an externally applied field, as a function of the amplitude and the temporal frequency of the vibrating pattern of fringes and show that these data fit our theoretical model well. From this fit we are able to determine some material parameters for pure and doped photorefractive Bi<sub>12</sub>TiO<sub>20</sub> crystals.

© 2002 Optical Society of America

OCIS Codes
(160.4330) Materials : Nonlinear optical materials

Citation
Luis Mosquera and Jaime Frejlich, "Enhanced photocurrent in photo-emf experiments in pure and doped absorbing photorefractive crystals," J. Opt. Soc. Am. B 19, 2904-2910 (2002)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-19-12-2904


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References

  1. M. P. Petrov, I. A. Sokolov, S. I. Stepanov, and G. S. Trofimov, “Non-steady-state photo-electromotive-force induced by dynamic gratings in partially compensated photoconductors,” J. Appl. Phys. 68, 2216–2225 (1990).
  2. S. I. Stepanov, “Photo-electromotive-force effect in semiconductors,” in Semiconductor Devices, H. S. Nalwa, ed., Vol. 2 of Handbook of Advanced Electronic and Photonic Materials and Devices (Academic, San Diego, Calif., 2001), Chap. 6, pp. 205–272.
  3. S. I. Stepanov and G. S. Trofimov, “Transient emf in crystals having ambipolar photoconductivity,” Sov. Phys. Solid State 31, 49–50 (1989).
  4. N. Korneev, D. Mayorga, S. Stepanov, H. Veenhuis, K. Buse, C. Kuper, H. Hesse, and E. Krätzig, “Holographic and non-steady-state photocurrent characterization of photorefractive barium-calcium titanate,” Opt. Commun. 160, 98–102 (1999).
  5. M. A. Bryushinin, G. B. Dubrovsky, and L. A. Sokolov, “Non-steady-state photocurrents in SnS2 crystals,” Appl. Phys. B 68, 871–875 (1999).
  6. R. Bittner, K. Meerholz, and S. Stepanov, “Nonsteady-state photo-EMF effect in photorefractive polymers,” Appl. Phys. Lett. 74, 3723–3725 (1999).
  7. N. A. Korneev and S. Stepanov, “Non-steady-state photoelectromotive force in semiconductor crystals with high light absorption,” J. Appl. Phys. 74, 2736–2741 (1993).
  8. G. S. Trofimov and S. I. Stepanov, “Time-dependent holographic currents in photorefractive crystals,” Sov. Phys. Solid State 28, 1559–1562 (1986).
  9. S. Stepanov and P. Petrov, Photorefractive Materials and Their Applications I, P. Günter and J.-P. Huignard, eds., Vol. 61 of Topics in Applied Physics (Springer-Verlag, Berlin, 1988), Chap. 9, pp. 263–289.
  10. A. A. Freschi, P. M. Garcia, and J. Frejlich, “Charge-carriers diffusion length in photorefractive crystals computed from the initial hologram phase shift,” Appl. Phys. Lett. 71, 2427–2429 (1997).
  11. L. Mosquera, I. de Oliveira, J. Frejlich, A. C. Hernandes, S. Lanfredi, and J. F. Carvalho, “Dark conductivity, photoconductivity and light-induced absorption in photorefractive sillenite crystals,” J. Appl. Phys. 90, 2635–2641 (2001).
  12. I. de Oliveira and J. Frejlich, “Photorefractive running hologram for materials characterization,” J. Opt. Soc. Am. B 18, 291–297 (2001).
  13. M. C. Barbosa, L. Mosquera, and J. Frejlich, “Speed and diffraction efficiency in feedback-controlled running holograms for photorefractive crystal characterization,” Appl. Phys. B 72, 717–721 (2001).
  14. I. de Oliveira and J. Frejlich, “Dielectric relaxation time measurement in absorbing photorefractive materials,” Opt. Commun. 178, 251–255 (2000).
  15. B. C. Grabmaier and R. Oberschmid, “Properties of pure and doped Bi12GeO20 and Bi12SiO20 crystals,” Phys. Status Solidi 96, 199–211 (1986).

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