Enhancement of Two-Wave Coupling in a Ce:KNSBN Crystal with Optimum Polarization of the Writing Beams
Applied Optics, Vol. 40, Issue 20, pp. 3359-3364 (2001)
http://dx.doi.org/10.1364/AO.40.003359
Acrobat PDF (91 KB)
Abstract
We have improved the two-wave coupling amplification and the signal-to-noise ratio of an amplified signal with photorefractive cerium-doped potassium sodium strontium barium niobate (Ce:KNSBN) by employing optimum polarization orientation of the pump beam while the signal beam retains extraordinary polarization. The optimum polarization angle of the pump beam was found experimentally to be 30° with respect to the extraordinary polarization direction in a symmetrically incident system. Nearly 1.9-times enhancement of the gain and nearly 3-times enhancement of the signal-to-noise ratio were achieved at a signal-to-pump beam intensity ratio of 1:40. At a beam intensity ratio of 1:2000, a two-wave coupling gain of nearly 500 was obtained, which is much higher than the gain previously reported. Modified coupled-wave equations that involve beam fanning with certain assumptions concerning the fanning parameters were used. The numerical solution is in good agreement with the experimental data. The results are compared with those obtained with a 45°-cut BaTiO3 crystal.
© 2001 Optical Society of America
[Optical Society of America ]
OCIS Codes
(090.7330) Holography : Volume gratings
(160.5320) Materials : Photorefractive materials
(190.5330) Nonlinear optics : Photorefractive optics
(190.7070) Nonlinear optics : Two-wave mixing
Citation
Bao-Lai Liang, Zhaoqi Wang, C. M. Cartwright, W. A. Gillespie, Mei-Song Ding, and Hui Zhang, "Enhancement of Two-Wave Coupling in a Ce:KNSBN Crystal with Optimum Polarization of the Writing Beams," Appl. Opt. 40, 3359-3364 (2001)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-40-20-3359
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
Log in to access OSA Member Subscription
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
Log in to access OSA Member Subscription
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
Log in to access OSA Member Subscription
Related Journal Articles 
- Photorefractive grating formulation with any light modulation and excitation: exact and approximate steady-state analytic solutions (JOSAB)
- Temporal memory effects in photorefractive two-beam coupling: a study comparing n-doped and p-doped BaTiO3 at 514 nm and 830 nm (JOSAB)
- Approach to space-charge field description in photorefractive crystals (JOSAB)
- Effect of random volume scattering on image amplification and beam fanning in photorefractive materials (JOSAB)
- Photorefractive running hologram for materials characterization (JOSAB)
Related Conference Papers
- Photoinduced charge transfer processes in photorefractive CdTE:Ge
- Two beam coupling in semi-insulating GaN using electroabsorption effect
- Recent Advances in Photorefractive Organic Materials
- Interband photorefraction in pure and Mg-doped near-stoichiometric LiTaO3
- Dynamic holographic images using photorefractive composites
« Previous Article | Next Article »
OSA is a member of 