Abstract

Analysis of two-wave coupling in cubic crystal classes 23 and 4¯3m is presented for arbitrary orientation of the grating vector and the applied electric field. We show that the most efficient two-wave coupling is achieved when both the grating vector and the external electric field are parallel to the 〈1̅11〉 axis in the (110) crystal cut. However, beam coupling is asymmetric in this geometry: The enhancement coefficient may differ by orders of magnitude whether interacting beams propagate in the 〈110〉 direction or backwards. Because of this asymmetry, the far-field fanning patterns of photorefractive Bi12TiO20 crystals strongly depend on the direction of the pump-beam propagation. A theoretical model is able to explain main features of the observed fanning patterns if the piezoelectric and photoelastic effects are incorporated into the system of vectorial coupled-wave equations.

© 1997 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Orientation and polarization effects of two-beam coupling in a cubic optically active photorefractive piezoelectric BSO crystal

V. V. Shepelevich, N. N. Egorov, and Victor Shepelevich
J. Opt. Soc. Am. B 11(8) 1394-1402 (1994)

Resonant vectorial wave coupling in cubic photorefractive crystals

B. I. Sturman, A. I. Chernykh, V. P. Kamenov, E. Shamonina, and K. H. Ringhofer
J. Opt. Soc. Am. B 17(6) 985-996 (2000)

Bidirectional vectorial light amplification in cubic crystals with unshifted photorefractive gratings

I. Rocha-Mendoza and A. V. Khomenko
Opt. Lett. 27(16) 1448-1450 (2002)

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 (3)

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 (31)

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