Publications

Structual Control Health Monitoring Journal 03/2019

Online cracking detection by means of optical techniques in laser‐cladding process

Authors:

Aitor García de la Yedra, Michael Pfleger, et al.

Contents:
  • This paper shows that XARION’s sensor technology can be used for the in-process monitoring of a laser-cladding process.
  • Comparison of the optical microphone against other online monitoring systems for laser cladding processes 
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Proceedings of DAGA 2018 München 

Ultrasound inspection of spot-welded joints

Authors:

Wolfgang Rohringer, Thomas Heine, et al.

Contents:
  • Joint publication of XARION with PORSCHE Leipzig GmbH, presented at the DAGA Conference 2018
  • Spot weld characterization in steel, with a single-sided NDT setup using XARION's optical microphone
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Optics Letters 11/2017

Dual modality reflection mode optical coherence and photoacoustic microscopy using an akinetic sensor

Authors:

Richard Haindl, Stefan Preisser, et al.

Contents:
  • The optical microphone was used as a part of a novel optical coherence and photoacoustic microscopy system (OC-PAM)
  • The OC-PAM system was applied to image a zebrafish larvae in vivo, demonstrating its capability in biomedical imaging
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Sensor Magazin (German) 09/2017

Optisches Mikrofon: Neue »Ohren« für kontaktfreie industrielle Prüfverfahren

Authors:

Balthasar Fischer, Nils Panzer, et al.

Contents:
  • Non-contact air-coupled system for industrial process monitoring and non-destructive material testing
  • Material fatigue testing
PDF

Laser Technik Journal 5/2017

Acoustic Process Control for Laser Material Processing

Authors:

Balthasar Fischer, Wolfgang Rohringer, et al.

Contents:
  • New approach for in-line process monitoring for laser material processing 
  • Emitted ultrasound reveals information about laser weld penetration depth 
PDF

Optik&Photonik 5/2017

Listening to Ultrasound with a Laser

Authors:

Stefan Preisser, Balthasar Fischer, et al.

Contents:
  • Precise measurement of the ultrasonic field of piezoelectric transducers using the optical microphone
  • Results achieved in photoacoustic imaging
PDF

Biomedical Optics Express 10/2016

All-optical highly sensitive akinetic sensor for ultrasound detection and photoacoustic imaging

Authors:

Stefan Preisser, Wolfgang Rohringer, et al.

Contents:
  • Image tests on biological tissue with a novel, all-optical sensor for photoacoustic imaging
  • Detection bandwidth of up to 22.5 MHz
PDF

Nature Photonics 06/2016

Optical microphone hears ultrasound

Authors:

Balthasar Fischer

Contents:
  • Working principle of XARION's optical microphone technology
  • Advantages over conventional transducers in applications such as process control or non-destructive testing
PDF