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Optodinamska pretvorba končno razsežnih laserskih bliskov
Laloš, Jernej (Author), Možina, Janez (Mentor) More about this mentor... This link opens in a new window, Jezeršek, Matija (Co-mentor)

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Abstract
V disertaciji raziskujemo optodinamsko pretvorbo končno razsežnih laserskih bliskov in njihov vpliv na mehansko valovanje v elastični snovi. Za to smo razvili matematični model na podlagi statistično dopolnjenega Huygensovega principa, ki ustrezno utežene Greenove funkcije iz prostorsko porazdeljenega vira sestavi v prostorsko porazdeljeno mehansko valovno obliko. Model smo uspešno uporabili pri umeritvi piezoelektričnega senzorja pomikov ter v temeljnih raziskavah prenosa gibalne količine iz laserskega bliska v trdno snov. Širjenje lasersko vzbujenega mehanskega valovanja smo z lasersko odklonsko sondo ter s hitro kamero proučevali tudi v nadomestku biološkega tkiva.

Language:Slovenian
Keywords:optodinamika, sevalni tlak, termoelastično raztezanje, odvzemanje snovi, laserski ultrazvok, mehansko valovanje, modeliranje valovanja, Greenove funkcije, utežne funkcije, hitra kamera
Work type:Doctoral dissertation (mb31)
Tipology:2.08 - Doctoral Dissertation
Organization:FS - Faculty of Mechanical Engineering
Year:2018
Publisher:[J. Laloš]
Number of pages:XXXII, 126 str.
UDC:535(043.3)
COBISS.SI-ID:16145691 This link opens in a new window
Views:1077
Downloads:336
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Secondary language

Language:English
Title:Optodynamic conversion of finite-sized laser pulses
Abstract:
In the dissertation, we investigate the optodynamic conversion of finite-sized laser pulses and their effects on mechanical waves in the elastic matter. We developed a mathematical model based on statistically enhanced Huygens' principle that combines appropriately weighted Green's functions from a spatially distributed source into a spatially distributed mechanical waveform. We successfully used the model in piezoelectric sensor calibration and in basic research of light-matter momentum transfer. We also studied the propagation of laser-induced mechanical waves with a laser-beam-deflection probe and a high-speed camera in a biological tissue substitute.

Keywords:optodynamics, radiation pressure, thermoelastic expansion, ablation, laser ultrasonics, mechanical waves, waveform modeling, Green's functions, weight functions, high-speed camera

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