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Št. zadetkov: 7
Optodinamska pretvorba končno razsežnih laserskih bliskov
Jernej Laloš, Janez Možina, Matija Jezeršek
Doktorska disertacija
Oznake: disertacije;optodinamika;sevalni tlak;termoelastično raztezanje;odvzemanje snovi;laserski ultrazvok;mehansko valovanje;modeliranje valovanja;Greenove funkcije;utežne funkcije;hitra kamera;
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 porazdeljene ...
Leto: 2018 Vir: Fakulteta za strojništvo (UL FS)
Transition from 1D to 2D laser-induced ultrasonic wave propagation in an extended plate
Jernej Laloš, Tomaž Požar, Janez Možina
Izvirni znanstveni članek
Oznake: ablation;elastic waves;laser-induced ultrasound;optodynamics;radiation pressure;thermoelasticity;
Optodynamic interaction between a laser pulse and the surface of an opaque, solid elastic object produces transient waves that propagate and reverberate within the object. They can be, in general, categorized into three distinctive types which are all formed through different mechanisms: ablation-in ...
Leto: 2016 Vir: Fakulteta za strojništvo (UL FS)
Observation of laser-induced elastic waves in agar skin phantoms using a high-speed camera and a laser-beam-deflection probe
Jernej Laloš, Peter Gregorčič, Matija Jezeršek
Izvirni znanstveni članek
Oznake: lasersko vzbujeno valovanje;agar gel;hitra kamera;laserska odklonska sonda;laser induced waves;high-speed camera;laser-beam-deflection probe;
We present an optical study of elastic wave propagation inside skin phantoms consisting of agar gel as induced by an Er:YAG (wavelength of 2.94 [micro]m) laser pulse. A laser-beam-deflection probe is used to measure ultrasonic propagation and a high-speed camera is used to record displacements in ab ...
Leto: 2018 Vir: Fakulteta za strojništvo (UL FS)
Incorporation of a spatial source distribution and a spatial sensor sensitivity in a laser ultrasound propagation model using a streamlined Huygensʼ principle
Jernej Laloš, Aleš Babnik, Janez Možina, Tomaž Požar
Izvirni znanstveni članek
Oznake: Greenʼs function;laser ultrasonics;optodynamics;radiation pressure;wave propagation;
The near-field, surface-displacement waveforms in plates are modeled using interwoven concepts of Greenʼs function formalism and streamlined Huygensʼ principle. Greenʼs functions resemble the building blocks of the sought displacement waveform, superimposed and weighted according to the simplified d ...
Leto: 2016 Vir: Fakulteta za strojništvo (UL FS)
Laser-induced ultrasonic waveform derivation and transition from a point to a homogeneous illumination of a plate
Jernej Laloš, Matija Jezeršek, Rok Petkovšek, Tomaž Požar
Izvirni znanstveni članek
Oznake: laserski ultrazvok;optične sile;sevalni tlak;termoelastično raztezanje;modeliranje valovanja;laser ultrasonics;optical forces;radiation pressure;thermoelastic expansion;waveform modeling;
Ultrasound modeling, being an established practice, is used to study the fundamentals of light-matter interactions. Although much has been published on the matter, pressure and thermal expansion induction mechanisms in laser ultrasonics have rarely been combined, as they should, in a single ultrason ...
Leto: 2017 Vir: Fakulteta za strojništvo (UL FS)
Linear momentum flow from light to solid matter
Tomaž Požar, Jernej Laloš, Aleš Babnik, Rok Petkovšek, G. V. B. Lukasievicz, Max Bethune-Waddell, Kenneth J. Chau, N. G. C. Astrath
Objavljeni povzetek znanstvenega prispevka na konferenci
Oznake: laserski ultrazvok;gibalna količina;laserski bliski;laser ultrasound;linear momentum;laser pulses;
Linear momentum flow from light to solid matter
Leto: 2018 Vir: Fakulteta za strojništvo (UL FS)
Isolated detection of elastic waves driven by the momentum of light
Tomaž Požar, Jernej Laloš, Aleš Babnik, Rok Petkovšek, G. V. B. Lukasievicz, Max Bethune-Waddell, Kenneth J. Chau, N. G. C. Astrath
Izvirni znanstveni članek
Oznake: svetlobni tlak;elastični valovi;gibalna količina;elektrodinamika;elastodinamika;radiation pressure;elastic waves;linear momentum;electrodynamics;elastodynamics;
Electromagnetic momentum carried by light is observable through the mechanical effects radiation pressure exerts on illuminated objects. Momentum conversion from electromagnetic fields to elastic waves within a solid object proceeds through a string of electrodynamic and elastodynamic phenomena, col ...
Leto: 2018 Vir: Fakulteta za strojništvo (UL FS)
Št. zadetkov: 7
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