Application of SLM generated patterns for laser-ultrasound

Autor:	C. M. Grunsteidl, I.A. Veres, T. Berer, P. Burgholzer
Rok vydání:	2014
Předmět:	Spatial light modulator Materials science business.industry Acoustics Physics::Optics Acoustic wave Laser law.invention Wavelength Optics Modulation law Dispersion relation Physics::Atomic Physics Dispersion (water waves) business Intensity modulation
Zdroj:	2014 IEEE International Ultrasonics Symposium.
DOI:	10.1109/ultsym.2014.0336
Popis:	We use a spatial light modulator to shape the excitation laser spot of a laser-ultrasound system. With periodic excitation patterns we are able to excite ultrasound waves of a particular, single wavelength. In combination with temporal intensity modulation of the excitation laser, only waves of specific wavelength and frequency are generated. We experimentally validated this principle and applied the method to scan the two-dimensional dispersion relation of surface acoustic waves on coated samples. Results obtained with different periodic patterns were compared. We also used the setup to produce laser spots of different size to study the excitability of Lamb modes.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e739f356dbb824c4e89e24cb0ce882e5 https://doi.org/10.1109/ultsym.2014.0336 Zobrazit plný text záznamu