Glass Machining and In-situ Metrology: recovery of spatio-temporal phase distribution from 2-dimensional interference fringe movement caused by irradiation of glass with ultra-short laser pulses at high pulse repetition rates

Kristian Cvecek; Kristian Cvecek; Johannes Heberle; Johannes Heberle; Michael Bergler; Michael Bergler; Isamu Miyamoto; Isamu Miyamoto; Dominique De Ligny; Michael Schmidt; Michael Schmidt

doi:10.1364/CLEO_AT.2019.ATu3I.1

Conference on Lasers and Electro-Optics
OSA Technical Digest (Optica Publishing Group, 2019),
paper ATu3I.1
•https://doi.org/10.1364/CLEO_AT.2019.ATu3I.1

Glass Machining and In-situ Metrology: recovery of spatio-temporal phase distribution from 2-dimensional interference fringe movement caused by irradiation of glass with ultra-short laser pulses at high pulse repetition rates

Kristian Cvecek, Johannes Heberle, Michael Bergler, Isamu Miyamoto, Dominique De Ligny, and Michael Schmidt

CLEO: Applications and Technology 2019

San Jose, California United States
5–10 May 2019
ISBN: 978-1-943580-57-6

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Ultrafast Laser Processing (ATu3I)

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K. Cvecek, J. Heberle, M. Bergler, I. Miyamoto, D. De Ligny, and M. Schmidt, "Glass Machining and In-situ Metrology: recovery of spatio-temporal phase distribution from 2-dimensional interference fringe movement caused by irradiation of glass with ultra-short laser pulses at high pulse repetition rates," in Conference on Lasers and Electro-Optics, OSA Technical Digest (Optica Publishing Group, 2019), paper ATu3I.1.

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Abstract

An interferometry-based method for direct observation of phase modifications caused by transient temperature and pressure changes during irradiation of glass using ultra-short laser pulses is shown. The method provides a 3-dimensional time-resolved phase distribution and allows to distinguish between reversible and irreversible laser induced phase changes inside the glass.

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