Beam self-trapping in a BCT crystal

V. Matusevich; A. Kiessling; R. Kowarschik; A. E. Zagorskiy; V. V. Shepelevich

doi:10.1117/12.667744

20 January 2006 Beam self-trapping in a BCT crystal

V. Matusevich, A. Kiessling, R. Kowarschik, A. E. Zagorskiy, V. V. Shepelevich

Proceedings Volume 6027, ICO20: Optical Information Processing; 60270D (2006) https://doi.org/10.1117/12.667744
Event: ICO20:Optical Devices and Instruments, 2005, Changchun, China

Abstract

We present some aspects of wave self-focusing and self-defocusing in a photorefractive Ba_0.77Ca_0.23TiO₃ (BCT) crystal without external electric field and without background illumination. The effects depend on the cross-section of the input beam. We show that by decreasing of the diameter of the input beam from 730 μm the fanning effect disappears at 150 μm. A symmetrical self-focusing is observed for input diameters from 150 um down to 40 μm and a symmetrical self-defocusing for input diameters from 40 μm down to 20 μm. The 1D self-trapping is detected at 65 μm in BCT. Light power and wavelength are correspondingly 3 mW and 633 nm. The experimental results are supplemented with numerical calculations based on both photovoltaic model and model of screening soliton.

Citation Download Citation

V. Matusevich, A. Kiessling, R. Kowarschik, A. E. Zagorskiy, and V. V. Shepelevich "Beam self-trapping in a BCT crystal", Proc. SPIE 6027, ICO20: Optical Information Processing, 60270D (20 January 2006); https://doi.org/10.1117/12.667744

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available