Simultaneous spatial frequency modulation imaging and micromachining with a femtosecond laser

A Ti:Al2O3 chirped-pulse amplification system is used to simultaneously image and machine. By combining simultaneous spatial and temporal focusing (SSTF) with spatial frequency modulation for imaging (SPIFI), we are able to decouple the imaging and cutting beams to attain a resolution and a field-of...

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Bibliographic Details
Published in:Optics letters 2016-01, Vol.41 (2), p.265-268
Main Authors: Block, Erica, Young, Michael D, Winters, David G, Field, Jeffrey J, Bartels, Randy A, Squier, Jeff A
Format: Article
Language:English
Subjects:
Amplification
Beams (radiation)
Cutting
Feedback
Focusing
Frequency modulation
Glass
Imaging
Lasers
Microtechnology - methods
Nonlinearity
Optical Imaging - methods
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Summary:A Ti:Al2O3 chirped-pulse amplification system is used to simultaneously image and machine. By combining simultaneous spatial and temporal focusing (SSTF) with spatial frequency modulation for imaging (SPIFI), we are able to decouple the imaging and cutting beams to attain a resolution and a field-of-view that is independent of the cutting beam, while maintaining single-element detection. This setup allows for real-time feedback with the potential for simultaneous nonlinear imaging and imaging through scattering media. The novel SSTF machining platform uses refractive optics that, in general, are prohibitive for energetic, amplified pulses that might otherwise compromise the integrity of the focus as a result of nonlinear effects.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.41.000265