Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Quantitative measurement for the saturated modulation of photorefractive index gratings in Li Nb O 3

Not Accessible

Your library or personal account may give you access

Abstract

The saturated photorefractive index determines the information storage capacity of a photorefractive crystal. Therefore, it is important to be able to measure this quantity precisely. We report a technique for measuring the saturated amplitude of the photorefractive index grating Δn0 with a precision of 2%, by measuring the diffraction efficiency as a function of time. We also report the measurement of the half-growth time τ of the grating. The Δn0 and τ are also verified by substitution into the theoretical formula derived from the coupled wave theory. The resulting theoretical prediction is shown to be consistent with the experimental data. The results also show that Δn0 is almost linearly proportional to light modulation up to unit light modulation for 0.01% Fe doped LiNbO3, which may be understood from the work of Vaveliuk et al. [Phys. Rev. B 59, 10985 (1999)] work for the nonlinear regime. We will now be able to quantify the photorefractive effect of those crystals for which this method is applicable.

© 2008 Optical Society of America

Full Article  |  PDF Article
More Like This
Self-stabilized recording of fixed gratings at high temperature in LiNbO3:Fe

Jan P. von Bassewitz, Ivan de Oliveira, and Jaime Frejlich
Appl. Opt. 47(29) 5315-5320 (2008)

Measurement of the photorefractive grating phase shift in a polymer by an ac phase-modulation technique

Martin Liphardt and Stephen Ducharme
J. Opt. Soc. Am. B 15(7) 2154-2160 (1998)

Stabilized photorefractive modulation recording beyond 100% diffraction efficiency in LiNbO3:Fe crystals

Agnaldo A. Freschi and Jaime Frejlich
J. Opt. Soc. Am. B 11(9) 1837-1841 (1994)

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 Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (9)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica 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 Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (21)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved