Peter Šušnjar (Avtor), Travis Jones (Avtor), Rick Trebino (Avtor), Rok Petkovšek (Avtor)

Povzetek

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 picoseconds long at wavelengths near 1030 nm. We investigate the dependence of the spectral bandwidth of the frequency-doubled input ultrashort pulse and the conversion efficiency on focal-spot size in the nonlinear crystal. Both numerical and experimental results confirm an increase of the bandwidth with tighter focusing in a thick BIBO and a more-than-threefold increase of conversion efficiency compared to a thin BIBO crystal. A PPLN crystal is found to be the most efficient among the three, but very thin (< 0.3 mm) crystals would be required to extend the measurement capabilities of SHG FROG to sub-ps pulses. A SHG FROG using a PPLN crystal for characterization of picosecond pulse is demonstrated with a sensitivity of 2x10[sup]-3 (mW)[sup]2 .

Ključne besede

nelinearna optika;ultrakratki laserski pulzi;FROG;karakterizacija ultrakratkih laserskih pulzov;nonlinear optics;ultrashort pulse;ultrashort pulse characterization;

Podatki

Jezik: Angleški jezik
Leto izida:
Tipologija: 1.01 - Izvirni znanstveni članek
Organizacija: UL FS - Fakulteta za strojništvo
UDK: 535.18(045)
COBISS: 17035547 Povezava se bo odprla v novem oknu
ISSN: 0018-9197
Št. ogledov: 105
Št. prenosov: 32
Ocena: 0 (0 glasov)
Metapodatki: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Ostali podatki

Sekundarni jezik: Slovenski jezik
Sekundarne ključne besede: nelinearna optika;ultrakratki laserski pulzi;FROG;karakterizacija ultrakratkih laserskih pulzov;
Vrsta dela (COBISS): Članek v reviji
Strani: str. 1-8
Letnik: ǂVol. ǂ56
Zvezek: ǂno. ǂ2
Čas izdaje: 2020
DOI: 10.1109/JQE.2020.2971761
ID: 15882621