Cart (Loading....) | Create Account
Close category search window

Quantification and modeling of the dynamic changes in the absorption coefficient of water at λ = 2.94 μm

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 $13
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

5 Author(s)
Shori, R.K. ; Dept. of Biomed. Eng., Northwestern Univ., Evanston, IL, USA ; Walston, A.A. ; Stafsudd, O.M. ; Fried, D.
more authors

A stable, high-energy Q-switched Er:YAG laser operating at 2.94 μm with a nearly diffraction-limited spatial beam profile was used to quantify the dynamic changes in the absorption coefficient of liquid water as a function of incident fluence. The data from transmission measurements across water layers of known thicknesses shows that the effective absorption coefficient of water decreases by almost an order of magnitude for fluence levels less than 2 J/cm2. From the measured transmission data, we have developed a phenomenological, finite-difference absorption model (the dynamic saturable absorption model) that can, at least to a first-order approximation, accurately predict the dynamic and effective absorption coefficient of water at the wavelength λ = 2.94 μm. The model developed in the present study should prove useful in efforts to understand the underlying mechanisms of laser-tissue interaction in applications such as skin resurfacing and corneal sculpting, wherein Er:YAG lasers are used to target water as the dominant chromophore

Published in:

Selected Topics in Quantum Electronics, IEEE Journal of  (Volume:7 ,  Issue: 6 )

Date of Publication:

Nov/Dec 2001

Need Help?

IEEE Advancing Technology for Humanity About IEEE Xplore | Contact | Help | Terms of Use | Nondiscrimination Policy | Site Map | Privacy & Opting Out of Cookies

A not-for-profit organization, IEEE is the world's largest professional association for the advancement of technology.
© Copyright 2014 IEEE - All rights reserved. Use of this web site signifies your agreement to the terms and conditions.