Actas de congresos
Photo-electromotive-force From Vibrating Speckled Pattern Of Light On Photorefractive Cdte:v
Registro en:
9780735405110
Aip Conference Proceedings. , v. 992, n. , p. 695 - 698, 2008.
0094243X
10.1063/1.2926953
2-s2.0-43649104400
Autor
Santos T.O.
Launay J.C.
Frejlich J.
Institución
Resumen
We report the use of the photo-electromotive force (photo-emf) effect produced by a vibrating speckle pattern of light, generated by laser radiation at 1064nm, in the volume of a photorefractive vanadium doped CdTe crystal. This effect is used to measure the sample's photocondutivity and the vibration amplitude of the pattern of light. When the vibrations are much faster than the photorefractive material reponse time the photocurrent is independent of the response time. The theoretical model predicts a maximum value for the first temporal harmonic term of the photocurrent at a fixed value for the vibration amplitude-to-speckle size ratio. This prediction was experimentally confirmed and this maximum can be used to calibrate the setup in order to facilitate practical applications. © 2008 American Institute of Physics. 992
695 698 Stepanov, S., Sokolov, I., Trofimov, G., Vlad, V., Popa, D., Apostol, I., (1990) Opt. Lett, 15, pp. 1239-1241 Korneev, N.A., Stepanov, S., (1993) J.Appl.Phys, 74, pp. 2736-2741 Sokolov, I.A., Stepanov, S.I., (1993) J. Opt. Soc. Am. B, 10, pp. 1483-1488 S.I. Stepanov, Reports on Prog. Phys. 57, 39-116 (1994)Leiva, L.A.M., Frejlich, J., (2004) J. Opt. A: Pure and Appl. Opt, 6, pp. 1001-1004 Petrov, M.P., Sokolov, I.A., Stepanov, S.I., Trofimov, G.S., (1990) J. Appl. Phys, 68, pp. 2216-2225 M. Bryushinin, V. Kulikov, and I. Sokolov, Phys. Rev. B 65, 2452041-6 (2002)Korneev, N.A., Stepanov, S.I., (1991) J. Mod. Optics, 38, pp. 2153-2158 Trofimov, G.S., Stepanov, S.I., (1986) Sov. Phys. Solid State, 28, pp. 1559-1562 Stepanov, S.I., (1994) Applied Optics, 32, pp. 915-920 S.I.Stepanov, Photo-electromotive-force effect in semiconductors, in Semiconductor Devices, edited by H.S.Nalwa, Academic Press, 2001, 2 of Handbook of Advanced Electronic and Photonic Materials and Devices, chap. 6, pp. 205-272Mansurova, S., Seres, I., Rodríguez, P., Stepanov, S., Trivedi, S., (1999) CLEO, p. 509 Stepanov, S.I., Rodriguez, P., Mansurova, S., Arroyo, M.L., Trivedi, S., Wang, C.C., (2007) Optical material, 29, pp. 623-630 Frejlich, J., (2006) Photorefractive Materials: Fundamental Concepts, Holographic Recording, and Materials Characterization, , Wiley-Interscience New York Belansky, R., Wanser, K., (1993) Am. J. Phys, 61, pp. 1014-1019