Periodic domain inversion in Z-cut LiTaO3 by electron beam scanning assisted by an internal field within the crystal

Venkatraman Gopalan; Alan C. G. Nutt; Mool C. Gupta

doi:10.1117/12.239671

10 May 1996 Periodic domain inversion in Z-cut LiTaO₃ by electron beam scanning assisted by an internal field within the crystal

Venkatraman Gopalan, Alan C. G. Nutt, Mool C. Gupta

Author Affiliations +

Proceedings Volume 2700, Nonlinear Frequency Generation and Conversion; (1996) https://doi.org/10.1117/12.239671
Event: Photonics West '96, 1996, San Jose, CA, United States

Abstract

The coercive field for domain reversal in a 0.5 mm Z-cut LiTaO₃ was measured to be 21 KV/mm. However, if the polarization of the crystal is reversed using an electric field of 21 KV/mm, the coercive field for a second reversal is found to be 11 KV/mm. This asymmetry is due to the presence of an in-built internal field of 5 KV/mm in the virgin crystal. If the electron beam writing is done on the new C-face of the polarization reversed region of the crystal, (1) no cracking was observed, (2) the writing required less charge for domain inversion because of the reduced coercive field, thereby facilitating shorter scan times. We have obtained uniform 3.6 micrometers period domain inversion grating using this technique.

Citation Download Citation

Venkatraman Gopalan, Alan C. G. Nutt, and Mool C. Gupta "Periodic domain inversion in Z-cut LiTaO₃ by electron beam scanning assisted by an internal field within the crystal", Proc. SPIE 2700, Nonlinear Frequency Generation and Conversion, (10 May 1996); https://doi.org/10.1117/12.239671

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