Development of high damage threshold laser-machined apodizers and gain filters for laser applications

Development of high damage threshold laser-machined apodizers and gain filters for laser applications

We have developed high damage threshold filters to modify the spatial profile of a high energy laser beam. The filters are formed by laser ablation of a transmissive window. The ablation sites constitute scattering centers which can be filtered in a subsequent spatial filter. By creating the filters...

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Bibliographic Details
Published in:High power laser science and engineering Vol. 4
Main Authors: Rambo, Patrick, Schwarz, Jens, Kimmel, Mark, Porter, John L.
Format: Journal Article
Language:English
Published: Cambridge, UK Cambridge University Press 2016
Subjects:
High Energy Density Physics and High Power Laser
Laser applications
apodization
spatial filtering
laser micro-machining
laser beam shaping
Online Access:Get full text
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Summary:We have developed high damage threshold filters to modify the spatial profile of a high energy laser beam. The filters are formed by laser ablation of a transmissive window. The ablation sites constitute scattering centers which can be filtered in a subsequent spatial filter. By creating the filters in dielectric materials, we see an increased laser-induced damage threshold from previous filters created using ‘metal on glass’ lithography.
ISSN:2095-4719
2052-3289
DOI:10.1017/hpl.2016.33