Journal Article

PUBDB-2025-01056

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Measuring the Progress of Laser Drilling by Means of OCT and Validation Using X-Ray Synchrotron Imaging

Buser, M. (Corresponding author)Extern* ; Henn, M.Extern* ; Schneller, L.Extern* ; Hummel, M.Extern* ; Olowinsky, A.Extern* ; Beckmann, F.HZG*Hereon* ; Hagenlocher, C.Extern* ; Graf, T.

2025
Springer New York, NY [u.a.]

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Please use a persistent id in citations: doi:10.1007/s40516-025-00287-8  doi:10.3204/PUBDB-2025-01056

Abstract: The progress of laser drilling of deep holes was observed by means of optical coherence tomography (OCT) and simultaneously by high-speed imaging with an X-ray synchrotron. A good agreement of the depths measured by OCT and the ones extracted from the X-ray images was found for boreholes with high aspect ratios up to an observation depth of 2 mm. It was verified for different borehole geometries generated by percussion drilling, helical drilling, using circular and linear polarization, and a wide range of different laser parameters. Moreover, the OCT can retrieve a plausible depth even when the tip of the borehole is accessible only through multiple reflections of the probe beam. This proves OCT to be an expedient tool for monitoring laser drilling even under challenging conditions.

Note: BMWK 03EN4059C "HolesInOne"

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Contributing Institute(s):

1. DOOR-User (DOOR ; HAS-User)
2. Helmholtz-Zentrum Hereon (Hereon)

Research Program(s):

1. 6G3 - PETRA III (DESY) (POF4-6G3) (POF4-6G3)
2. FS-Proposal: BAG-20211050 (BAG-20211050) (BAG-20211050)

Experiment(s):

1. PETRA Beamline P07 (PETRA III)

Appears in the scientific report 2025

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Database coverage:
; ; DEAL Springer ; SCOPUS

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