Role of ionic grating in self-enhanced readout from a thermally fixed grating in a photorefractive barium titanate crystal

Yasuo Tomita; Shun-suke Matsushima; Osamu Miyazaki

doi:10.1117/12.279185

22 September 1997 Role of ionic grating in self-enhanced readout from a thermally fixed grating in a photorefractive barium titanate crystal

Yasuo Tomita, Shun-suke Matsushima, Osamu Miyazaki

Author Affiliations +

Proceedings Volume 3137, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications III; (1997) https://doi.org/10.1117/12.279185
Event: Optical Science, Engineering and Instrumentation '97, 1997, San Diego, CA, United States

Abstract

We investigate role of temperature-dependent ionic and re- created photocarrier (hole) gratings in self-enhanced readout from thermally fixed holographic gratings in undoped barium titanate. It is shown that the temperature dependence of the diffraction efficiency below approximately 80 degrees Celsius is mainly determined by temperature-dependent behavior of the dielectric and electro-optic constants. On the other hand, the trend of the ionic grating predominantly determines the temperature dependence of the diffraction efficiency above approximately 80 degrees Celsius even though a magnitude of the hole grating monotonically increases and is more than ten times larger than that of the ionic grating. This finding explains origin of the previously reported behavior of the temperature-dependent diffraction efficiency in barium titanate [D. Zhang et al., Appl. Opt. 34, 5241(1995)]. An activation energy of the mobile ions is also determined to be 1.05 eV from which shelf life is estimated to be over 150 days at 25 degrees Celsius.

Citation Download Citation

Yasuo Tomita, Shun-suke Matsushima, and Osamu Miyazaki "Role of ionic grating in self-enhanced readout from a thermally fixed grating in a photorefractive barium titanate crystal", Proc. SPIE 3137, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications III, (22 September 1997); https://doi.org/10.1117/12.279185

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