Laser micro-fabrication of concave, low-roughness features in silica

We describe a micro-fabrication method to create concave features with ultra-low roughness in silica, either on optical fibers or on flat substrates. The machining uses a single CO2 laser pulse train. Parameters are chosen such that evaporation removes material while a low-viscosity melt layer produ...

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Bibliographic Details
Main Authors: D. Hunger, C. Deutsch, R. J. Barbour, R. J. Warburton, J. Reichel
Format: Article
Language:English
Published: AIP Publishing LLC 2012-03-01
Series:AIP Advances
Online Access:http://dx.doi.org/10.1063/1.3679721