Abstract

The photorefractive transport models that include hot-electron transport nonlinearities in the photorefractive transport equations introduce a new phase-shift mechanism that explains the large energy exchange recently observed in semi-insulating multiple-quantum-well structures during photorefractive beam coupling. We show that carrier heating by large applied electric fields contributes a nonlinear transport length that limits the magnitude of the space-charge electric field and introduces a photorefractive phase shift that can approach π/2. The nonlinear contribution is dependent on field strength and on fringe spacing and should be a general property of velocity saturation in the direct-gap semiconductors. These results may force a reinterpretation of apparent trap-limited behavior in bulk photorefractive semiconductors even under nonresonant excitation.

© 1994 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Photorefractive phase shift induced by nonlinear electronic transport

Q. N. Wang, R. M. Brubaker, and D. D. Nolte
Opt. Lett. 19(11) 822-824 (1994)

Photorefractive quantum wells: transverse Franz–Keldysh geometry

Q. Wang, R. M. Brubaker, D. D. Nolte, and M.R. Melloch
J. Opt. Soc. Am. B 9(9) 1626-1641 (1992)

Role of physical parameters on the photorefractive performance of semiconductor multiple quantum wells

L. F. Magaña, F. Agulló-López, and M. Carrascosa
J. Opt. Soc. Am. B 11(9) 1651-1654 (1994)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (6)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Tables (4)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (34)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription