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Št. zadetkov: 6
Visoko občutljivo merjenje pikosekundnih laserskih sunkov
Peter Šušnjar, Rok Petkovšek
Doktorska disertacija
Oznake: optika;ultrakratki laserski sunki;karakterizacija sunkov;spektralno razločena avtokorelacija;frekvenčno podvajanje svetlobe;
Ultrakratki laserski sunki (UKS) so zaradi svojih unikatnih lastnosti – kratke dolžine le nekaj pikosekund ali manj ter visoke intenzitete, ki jo ta omogoča, izredno uporabno orodje za proučevanje in preoblikovanje materije. Za številne aplikacije je ključna informacija o časovni obliki UKS - tako o ...
Leto: 2020 Vir: Fakulteta za matematiko in fiziko (UL FMF)
Photodarkening as a heat source in ytterbium doped fiber amplifiers
Peter Šušnjar, Vid Agrež, Rok Petkovšek
Izvirni znanstveni članek
Oznake: fiber lasers;photodarkening;ytterbium fibers;
Theoretical and experimental evaluation of the photodarkening effect as a heat source in ytterbium doped fibers is presented. An additional non-radiative decay channel that opens after photodarkening the fiber is identified via fluorescence lifetime reduction and as an additional heat source proport ...
Leto: 2018 Vir: Fakulteta za strojništvo (UL FS)
Compensation of optical nonlinearities in a femtosecond laser system in a broad operation regime
Luka Černe, Peter Šušnjar, Rok Petkovšek
Izvirni znanstveni članek
Oznake: nonlinear phase;femtosecond laser;self-phase modulation;CPA;FROG;
We present here a detailed study of a compact and tunable nonlinear phase pre-compensation method based on a tunable chirped fiber Bragg grating (TCFBG) applied to an ultrafast fiber laser system. Frequency resolved optical gating (FROG) measurements reveal a significant variation in the output puls ...
Leto: 2021 Vir: Fakulteta za strojništvo (UL FS)
ǂA ǂsource of extreme ultraviolet light based on high harmonic generation in noble gases
Peter Šušnjar, Irena Drevenšek Olenik, Thomas Udem
Magistrsko delo
Oznake: nonlinear optics;ultrashort light pulses;high harmonic generation;EUV light sources;
A source of extreme ultraviolet light based on high harmonic generation in noble gases
Leto: 2016 Vir: Fakulteta za matematiko in fiziko (UL FMF)
High-sensitivity, simple frequency-resolved-optical-gating device
Travis Jones, Peter Šušnjar, Rok Petkovšek, Rick Trebino
Izvirni znanstveni članek
Oznake: ultrafast optics;ultrafast measurements;frequency-resolved optical gating;GRENOUILLE;
We introduce a practical self-referenced device for the complete temporal intensity-and-phase measurement of fewfemtojoule-level fs and ps pulses based on the simple version of frequency-resolved-optical gating, called GRENOUILLE. We replace the usual crossed-beam line-focus geometry with a pointfoc ...
Leto: 2020 Vir: Fakulteta za strojništvo (UL FS)
Crystal-configuration considerations for higher-sensitivity picosecond-pulse SHG FROG
Peter Šušnjar, Travis Jones, Rick Trebino, Rok Petkovšek
Izvirni znanstveni članek
Oznake: nelinearna optika;ultrakratki laserski pulzi;FROG;karakterizacija ultrakratkih laserskih pulzov;nonlinear optics;ultrashort pulse;ultrashort pulse characterization;
We experimentally compare a thick BIBO crystal, a walk-off compensating configuration of thin BBO crystals, and a thin PPLN crystal for the use as a nonlinear medium in SHG FROG, aiming for increased sensitivity required for complete pulse characterization of low-energy (below pJ) pulses a few picos ...
Leto: 2020 Vir: Fakulteta za strojništvo (UL FS)
Št. zadetkov: 6
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