Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten.

Photoacoustic detection of weak absorption in lithium niobate

: Waasem, N.; Fieberg, S.; Haertle, D.; Kühnemann, F.; Buse, K.


Institute of Electrical and Electronics Engineers -IEEE-; Optical Society of America -OSA-, Washington/D.C.:
European Conference on Lasers and Electro-Optics and 12th European Quantum Electronics Conference, CLEO Europe/EQEC 2011. Vol.1 : 22 - 26 May 2011, Munich, Germany
New York, NY: IEEE, 2011
ISBN: 978-1-4577-0533-5
ISBN: 978-1-4577-0532-8
European Conference on Lasers and Electro-Optics (CLEO Europe) <2011, Munich>
European Quantum Electronics Conference (EQEC) <12, 2011, Munich>
Conference Paper
Fraunhofer IPM ()
lithium compounds; neodymium; optical harmonic generation; photoacoustic spectroscopy; piezoelectric transducer; solid laser

This paper presents a different approach: pulsed-laser photoacoustic (PA) spectroscopy with piezoelectric (PZT) sensors is used to determine the absorption through the amount of the energy deposited in the sample. This results in a simple experimental setup. Here, a frequency doubled Nd:YAG laser (λ = 532 nm) was used. The setup allows the variation of pulse energy (10 μJ to 100 mJ), pulse duration (5 to 20 ns) and beam diameter (0.1 mm to 4 mm) for a systematic investigation of the PA signal generated in the LiNbO3 crystals.