Laser optoacoustics & materials

Sub-fields of research

a) Nanoacoustics (picosecond ultrasonics): Generation and detection of fast and ultra high-frequency acoustic waves through the interaction of chirped ultrashort-duration laser pulses with material surfaces, with applications in nanotechnology for the investigation of the elastomechanical and acoustic properties of simple, composite materials and metamaterials.

 

b) Laser Plasma sound sources: The generation and detection of audible and ultrasound point-like and line-like plasma acoustic sources focusing intense short laser pulses in fliuds (eg ambient air and water) and their application in acoustic material and metamaterial characterization and room acoustics.

 

c) Acoustic wave crystalline undulators: Specialized and innovative methods are developed, based on the generation of ultrahigh frequncy acoustic waves in single crystals (eg Si and Ge) using special piezoelectric transducers and/or pulsed laser sources to achieve dynamic modification of the crystal structure for crystalline undulation of ultra-high energy electron and positron beams towards the generation of bright, monochromatic and tunable γ-rays in the MeV regime

 

d) XUV Coherent Diffraction Imaging (CDI): The developent and use of coherent XUV radiation based on femtosecond laser high harmonic generation for dynamic characterization of materials and structures in the nanoscale with femtosecond accurancy.

 

e) Laser Vibrometry and Modal Analysis: The development and use of laser technology for Electronic Speckle Pattern Dynamic and time-averaged Interferomety and laser Dopper vibrometry for surface modal analysis of structures with vibration and acoustic interest l (eg. Vibrating and moving surfaces in machines, musical instruments, acoustic or structrural materials and metamaterials).