Spectral broadening and a prospect for pulse compression of Yb:YAG thin-disk laser pulses by nonlinear SHG in a BBO crystal with time predelay and tilting of the pulse fronts

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F22%3A00556011" target="_blank" >RIV/68378271:_____/22:00556011 - isvavai.cz</a>

Výsledek na webu

<a href="http://hdl.handle.net/11104/0330377" target="_blank" >http://hdl.handle.net/11104/0330377</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1364/OPTCON.437879" target="_blank" >10.1364/OPTCON.437879</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Spectral broadening and a prospect for pulse compression of Yb:YAG thin-disk laser pulses by nonlinear SHG in a BBO crystal with time predelay and tilting of the pulse fronts

Popis výsledku v původním jazyce

Pulse compression by second harmonic generation in a type II nonlinear optical crystal controlled by a time predelay of the faster input pulse is not simple to achieve high-average power Yb:YAG lasers with wavelength of 1030 nm. The reason is that the borate nonlinear crystals with their excellent thermal properties do not have the optimal ratio of group velocities of the interacting pulses to achieve efficient pulse compression. We have changed the effective group velocities by tilting the pulse fronts at a diffraction grating and imaging the tilted 1.7 ps pulses into the 6 and 8.5 mm thick BBO crystals. As a result, we have measured significant spectral broadening to 4.5 nm, supporting pulses as short as 100 fs, with an energy conversion efficiency in excess of 20 %. The measured data correspond well with numerical simulations. This research opens a way to extend the range of possible applications of Yb:YAG high-average-power thin-disk lasers into the fs regime.

Název v anglickém jazyce

Spectral broadening and a prospect for pulse compression of Yb:YAG thin-disk laser pulses by nonlinear SHG in a BBO crystal with time predelay and tilting of the pulse fronts

Popis výsledku anglicky

Pulse compression by second harmonic generation in a type II nonlinear optical crystal controlled by a time predelay of the faster input pulse is not simple to achieve high-average power Yb:YAG lasers with wavelength of 1030 nm. The reason is that the borate nonlinear crystals with their excellent thermal properties do not have the optimal ratio of group velocities of the interacting pulses to achieve efficient pulse compression. We have changed the effective group velocities by tilting the pulse fronts at a diffraction grating and imaging the tilted 1.7 ps pulses into the 6 and 8.5 mm thick BBO crystals. As a result, we have measured significant spectral broadening to 4.5 nm, supporting pulses as short as 100 fs, with an energy conversion efficiency in excess of 20 %. The measured data correspond well with numerical simulations. This research opens a way to extend the range of possible applications of Yb:YAG high-average-power thin-disk lasers into the fs regime.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10306 - Optics (including laser optics and quantum optics)

Projekt

<a href="/cs/project/EF15_006%2F0000674" target="_blank" >EF15_006/0000674: HiLASE Centre of Excellence</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Optics Continuum

ISSN

2770-0208

e-ISSN

—

Svazek periodika

1

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

16

Strana od-do

16-30

Kód UT WoS článku

000835315500003

EID výsledku v databázi Scopus

2-s2.0-85125951362