First-Order Model of Thermal Lensing in a Virtual Eye

Vincelette, Rebecca L.; Thomas, Robert J.; Rockwell, Benjamin A.; Clark, Iii, Clifton D.; Welch, Ashley J.

First-Order Model of Thermal Lensing in a Virtual Eye

Active / Technical Report | Accession Number: ADA499727 |

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Abstract:

An ABCD beam-propagation method was used to build a first-order mathematical model of a thermal lens effect from a near-infrared laser beam in water and ocular media. The model was found to fit experimental z-x scan data best when the thermo-optic coefficient dndT of liquid water at 292 K was -4.46x10-5 K-1. The physiological parameters of the human eye were simulated in a simple eye model using this fitted dndT value. Conservative model simulations for 1150 and 1318 nm laser radiation include parameter sets used in experimental ocular exposures performed by Zuchlich, et al., to illustrate the transient response of the thermal lens approaching the limits of the retinal damage thresholds for equivalent laser radiation sources.

Author(s):

Vincelette, Rebecca L. ; Thomas, Robert J. ; Rockwell, Benjamin A. ; Clark, Iii, Clifton D. ; Welch, Ashley J.

Author Organization(s):

TEXAS UNIV AT SAN ANTONIO

Descriptive Note:

Journal article

Supplementary Note:

Published in the Journal of the Optical Society of America, v26 n3 p548-558, Mar 2009. Prepared in collaboration with Air Force Research Laboratory (AFRL), Brooks City-Base, TX. Prepared in cooperation with Northrop Grumman, Brooks City-Base, TX.

Pagination:

0012

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:

Approved For Public Release

Distribution Statement:

Approved For Public Release; Distribution Is Unlimited.

RECORD

Collection: TR

Identifying Numbers

Report Number(s):

UTSA-711-HPW/RHDO

Contract/Grant Number(s):

F41624-02-D-7003, FA8650-05-2-6501

Task Number(s):

AH

Project Number(s):

2312

Monitor Series:

711-HPW-HRBR

Subject Terms

Joint Capability Areas:

JCA_5_Command and Control; JCA_5.3_Planning; JCA_1.2.7_Experimentation

Modernization Areas:

Directed Energy

Communities of Interest:

Biomedical

Descriptor(s):

*THERMAL LENS EFFECT, *VIRTUAL REALITY, *EYE, *MATHEMATICAL MODELS, COEFFICIENTS, TRANSIENT RADIATION EFFECTS, RETINA, BEAMS(RADIATION), NEAR INFRARED RADIATION, LASER BEAMS, OPTICS, REPRINTS, PROPAGATION, PHYSIOLOGY

Field(s)/Group(s):

Anatomy and Physiology, Optics, Thermodynamics

Keyword(s):

*THERMAL LENSING, PE61102F, WUAFRL2312AH02

Report Date:

2009 Mar 01

Creation Date:

2009 Jun 24