Title

Coupled-wave analysis of apodized volume gratings

Authors

Authors

J. M. Tsui; C. Thompson; V. Mehta; J. M. Roth; V. I. Smirnov;L. B. Glebov

Comments

Authors: contact us about adding a copy of your work at STARS@ucf.edu

Abbreviated Journal Title

Opt. Express

Keywords

DIFFRACTION; GLASS; Optics

Abstract

This work presents the use of longitudinal refractive index modulation (apodization) in photosensitive glass for improved sidelobe suppression in volume holographic optical elements. We develop a numerical model for both uniform and apodized volume holograms based on rigorous coupled-wave analysis. We validate the model by comparison with a transmissive 1.55-mum uniform volume grating in photothermorefractive glass. We then apply our numerical model to calculate the spectral response of apodized gratings. The numerical results demonstrate that apodization of the refractive index modulation envelope improves spectral selectivity and reduces first and second-order side-lobe peaks by up to 33 and 65 dB, respectively. We suggest a method for creating apodization in volume holograms with approximately Gaussian spatial refractive index profile. (C) 2004 Optical Society of America.

Journal Title

Optics Express

Volume

12

Issue/Number

26

Publication Date

1-1-2004

Document Type

Article

Language

English

First Page

6642

Last Page

6653

WOS Identifier

WOS:000226090600028

ISSN

1094-4087

Share

COinS