6 February 2017 Laser safety evaluation for high-energy laser interaction with solids
Author Affiliations +
Abstract
Laser safety regulating the deployment of kW-class high-energy laser (HEL) technologies in outdoor applications can rapidly cause significant planning and operations issues due to the ranges involved. Safety templates based on a simplistic approach of assuming a continuous wave laser beam incident on a highly reflective totally flat solid surface of infinite size can easily result in ranges of tens of kilometers for kW-class lasers. Due to the complexity of HEL-matter interactions, the assumptions underlying the aforementioned approach are, however, deemed inappropriate. We identify a more suitable approach, which assumes a time-variant reflection pattern as well as a change in the variance of beam divergence as it reflects from the target’s surface. Based on experimental results, we instead propose to assess the nominal ocular hazard distance by applying the American National Standard Institute rules for time-variant multipulse laser exposure and using measured divergence angles from the target’s surface. The resulting safety templates, thus, exhibit a higher fidelity with respect to the behavior of the reflection patterns while reducing the hazard zones.
© 2017 Society of Photo-Optical Instrumentation Engineers (SPIE)
Jean-François Daigle, Dominik Pudo, Francis Théberge, Marc Châteauneuf, "Laser safety evaluation for high-energy laser interaction with solids," Optical Engineering 56(2), 026106 (6 February 2017). https://doi.org/10.1117/1.OE.56.2.026106 . Submission: Received: 21 October 2016; Accepted: 10 January 2017
Received: 21 October 2016; Accepted: 10 January 2017; Published: 6 February 2017
JOURNAL ARTICLE
7 PAGES


SHARE
RELATED CONTENT

High energy laser interaction with solids a laser safety...
Proceedings of SPIE (October 21 2016)
Laser sources in dentistry and radiation safety regulations
Proceedings of SPIE (February 06 2007)
Shaping the Romanian laser safety policy in the frame of...
Proceedings of SPIE (January 31 2001)
Laser safety considerations for a mobile laser program
Proceedings of SPIE (May 02 1997)
Laser moire deflectometry system used for fire science research
Proceedings of SPIE (September 20 2002)
Marketing The Standard To The User
Proceedings of SPIE (January 26 1979)
Experience With Laser Safety In The USA--A Review
Proceedings of SPIE (October 21 1986)

Back to Top