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Št. zadetkov: 7
Energetska prenova z modernizacijo regulacije ogrevanja na primeru treh javnih objektov v občini Ormož
Vid Petelin, Peter Virtič, Franjo Pranjić
Diplomsko delo
Oznake: prenova;regulacija;ogrevanje;energija;projekt;
V diplomskem delu smo se osredotočili na energetsko problematiko starejših zgradb. Na primeru treh javnih objektov v občini Ormož smo predstavili načine, kako lahko objekte naredimo čim bolj energetsko učinkovite. V našem primeru gre za dve osnovni šoli in športno dvorano. Problem, s katerim smo se ...
Leto: 2022 Vir: Fakulteta za energetiko (UM FE)
Microbubble dynamics and jetting near tissue-phantom biointerfaces
Jaka Mur, Vid Agrež, Jaka Petelin, Rok Petkovšek
Izvirni znanstveni članek
Oznake: cavitation bubbles;laser breakdown;tissue phantom;sonoporation;
Precise excitation of cavitation is a promising mechanism for microsurgery procedures and targeted drug delivery enhancement. The underlying phenomenon of interest, jetting behaviour of oscillating cavitation bubbles, occurs due to near-surface interactions between the boundary, liquid, and bubble. ...
Leto: 2022 Vir: Fakulteta za strojništvo (UL FS)
Near threshold nucleation and growth of cavitation bubbles generated with a picosecond laser
Vid Agrež, Jaka Mur, Jaka Petelin, Rok Petkovšek
Izvirni znanstveni članek
Oznake: micro cavitation;bubble nucleation;dual threshold;shockwaves;laser induced breakdown;
The nucleation and growth of cavitation bubbles few micrometers in size in water generated by a 60 ps 515 nm fiber laser is observed and visualized near nucleation threshold. The study is performed by monitoring the plasma size, the cavitation bubble size and the emitted shock waves. The latter two ...
Leto: 2023 Vir: Fakulteta za strojništvo (UL FS)
DFB diode seeded low repetition rate fiber laser system operating in burst mode
Marko Šajn, Jaka Petelin, Vid Agrež, Matjaž Vidmar, Rok Petkovšek
Izvirni znanstveni članek
Oznake: fiber lasers;laser amplifiers;ytterbium fibers;
A distributed feedback (DFB) diode, gain switched to produce pulses from 60 ps at high peak power of over 0.5 W, is used in burst mode to seed a fiber amplifier chain. High seed power, spectral filtering between amplifier stages and pulsed pumping are used to mitigate amplified spontaneous emission ...
Leto: 2017 Vir: Fakulteta za strojništvo (UL FS)
Pulses on demand in fibre and hybrid lasers
Rok Petkovšek, Vid Agrež, Jaka Petelin, Luka Černe, Udo Bünting, Boštjan Podobnik
Izvirni znanstveni članek
Oznake: pulse on demand;fibre lasers;gain control;arbitrary repetition rate;
This paper presents an investigation of pulse-on-demand operation in fibre and hybrid lasers. Two methods for efficient gain control that enable the generation of laser pulses at arbitrary times with controlled pulse parameters are presented. The method of direct modulation of the pump power in the ...
Leto: 2019 Vir: Fakulteta za strojništvo (UL FS)
Pulse-on-demand laser operation from nanosecond to femtosecond pulses and its application for high-speed processing
Jaka Petelin, Luka Černe, Jaka Mur, Vid Agrež, Jernej Jan Kočica, Jörg Schille, Udo Loeschner, Rok Petkovšek
Izvirni znanstveni članek
Oznake: arbitrary repetition rate;fiber lasers;gain control;high speed processing;pulse-on-demand;
In this manuscript we present a true pulse-on-demand laser design concept using two different approaches. First, we present a fiber master oscillator power amplifier (MOPA) based quasi-continuous wave (CW) laser, working at high modulation bandwidths, for generation of nanosecond pulses. Second, we ...
Leto: 2021 Vir: Fakulteta za strojništvo (UL FS)
Multi-frame multi-exposure shock wave imaging and pressure measurements
Jaka Mur, Fabian Reuter, Jernej Jan Kočica, Žiga Lokar, Jaka Petelin, Vid Agrež, Claus-Dieter Ohl, Rok Petkovšek
Izvirni znanstveni članek
Oznake: cavitation;laser breakdown;shock wave;laser illumination;fiber-optic hydrophone;
Shock wave visual detection was traditionally performed using streak cameras, limited to homogeneous shock wave emission, with the corresponding shock wave pressure measurements available at rather large distances or numerically estimated through equation of state for water. We demonstrate a multi-f ...
Leto: 2022 Vir: Fakulteta za strojništvo (UL FS)
Št. zadetkov: 7
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