Ultrafast laser writing of homogeneous longitudinal waveguides in glasses using dynamic wavefront correction

Laser writing of longitudinal waveguides in bulk transparent materials degrades with the focusing depth due to wavefront distortions generated at the air-dielectric interface. Using adaptive spatial tailoring of ultrashort laser pulses, we show that spherical aberrations can be dynamically compensat...

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Bibliographic Details
Published inOptics express Vol. 16; no. 8; pp. 5481 - 5492
Main Authors Mauclair, C, Mermillod-Blondin, A, Huot, N, Audouard, E, Stoian, R
Format Journal Article
LanguageEnglish
Published United States Optical Society of America - OSA Publishing 14.04.2008
Subjects
Computer Simulation
Computer-Aided Design
Engineering Sciences
Equipment Design
Equipment Failure Analysis
Glass - chemistry
Glass - radiation effects
Lasers
Lenses
Models, Theoretical
Optics
Photonic
Refractometry - instrumentation
Surface Properties
Adaptive optics
Femtosecond phenomena
Laser materials processing
Aberration compensation
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Summary:Laser writing of longitudinal waveguides in bulk transparent materials degrades with the focusing depth due to wavefront distortions generated at the air-dielectric interface. Using adaptive spatial tailoring of ultrashort laser pulses, we show that spherical aberrations can be dynamically compensated in optical glasses, in synchronization with the writing procedure. Aberration-free structures can thus be induced at different depths, showing higher flexibility for 3D processing. This enables optimal writing of homogeneous longitudinal waveguides over more significant lengths. The corrective process becomes increasingly important when laser energy has to be transported without losses at arbitrary depths, with the purpose of triggering mechanisms of positive refractive index change.
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ISSN:1094-4087
1094-4087
DOI:10.1364/OE.16.005481