By Topic

Anisotropy of optical absorption and fluorescence in Al2O3:C,Mg crystals

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $31
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
Sanyal, Subrata ; Landauer Inc., Stillwater Crystal Growth Division, 72312 Eastgate Street, Stillwater, Oklahoma 74074 ; Akselrod, Mark S.

Your organization might have access to this article on the publisher's site. To check, click on this link:http://dx.doi.org/+10.1063/1.1999032 

Spectroscopic properties of recently discovered fluorescent sapphire single crystals (Al2O3:C,Mg), developed for volumetric optical data storage, are investigated. Polarized optical absorption, excitation-emission spectra, and quantum yield of fluorescence of the crystal in two different photochromic states are studied. The spatial distribution of intensity and polarization ratio of the fluorescence associated with the 435/520- and 620/750-nm excitation-emission bands, characteristic of the two photochromic states of the crystal, display strong anisotropy. The intensity distribution, and hence the spatially averaged quantum yield of fluorescence for the two states, measured relative to standard laser dyes are similar for different crystallographic orientations. The average quantum yield is found to be close to unity for both the states. The anisotropic properties of optical absorption and fluorescence suggest a model of double oxygen vacancy.

Published in:

Journal of Applied Physics  (Volume:98 ,  Issue: 3 )