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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 36, Iss. 6 — Mar. 15, 2011
  • pp: 822–824

High-resolution monitoring of the hole depth during ultrafast laser ablation drilling by diode laser self-mixing interferometry

Francesco P. Mezzapesa, Antonio Ancona, Teresa Sibillano, Francesco De Lucia, Maurizio Dabbicco, Pietro Mario Lugarà, and Gaetano Scamarcio  »View Author Affiliations


Optics Letters, Vol. 36, Issue 6, pp. 822-824 (2011)
http://dx.doi.org/10.1364/OL.36.000822


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Abstract

We demonstrate that diode laser self-mixing interferometry can be exploited to instantaneously measure the ablation front displacement and the laser ablation rate during ultrafast microdrilling of metals. The proof of concept was obtained using a 50-μm-thick stainless steel plate as the target, a 120 ps / 110 kHz microchip fiber laser as the machining source, and an 823 nm diode laser with an integrated photodiode as the probe. The time dependence of the hole penetration depth was measured with a 0.41 µm resolution.

© 2011 Optical Society of America

OCIS Codes
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.3930) Instrumentation, measurement, and metrology : Metrological instrumentation
(280.3420) Remote sensing and sensors : Laser sensors

ToC Category:
Remote Sensing and Sensors

History
Original Manuscript: November 5, 2010
Revised Manuscript: January 7, 2011
Manuscript Accepted: January 26, 2011
Published: March 8, 2011

Citation
Francesco P. Mezzapesa, Antonio Ancona, Teresa Sibillano, Francesco De Lucia, Maurizio Dabbicco, Pietro Mario Lugarà, and Gaetano Scamarcio, "High-resolution monitoring of the hole depth during ultrafast laser ablation drilling by diode laser self-mixing interferometry," Opt. Lett. 36, 822-824 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-6-822

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