Wavefront aberration measurement in a cryogenically cooled Yb:YAG slab using a wavefront sensor

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F17%3A00318164" target="_blank" >RIV/68407700:21340/17:00318164 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1117/12.2265933" target="_blank" >http://dx.doi.org/10.1117/12.2265933</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1117/12.2265933" target="_blank" >10.1117/12.2265933</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Wavefront aberration measurement in a cryogenically cooled Yb:YAG slab using a wavefront sensor

Popis výsledku v původním jazyce

We investigated wavefront aberrations in a cryogenically cooled Yb:YAG slab with a wavefront sensor using a probe beam technique under non-lasing condition. To analyze the pump-induced phase aberrations created in the crystal, the measured wavefronts were fitted with orthonormal Zernike polynomials. The Yb:YAG crystal of 2 mm thickness, 10 mm diameter, and 3 at.% doping concentration was mounted in a copper holder in a closed-loop pulse tube cryostat with cooling capacity of 12 W at 100 K. The gain medium was single-end pumped by a fiber-coupled laser diode at pumping intensity of similar to 6.5 kW/cm(2) with a maximum repetition rate of 100 Hz, pulse duration of 1 ms, and pump spot diameter of 2.5 mm. The time resolved measurement revealed that defocus, which was the main wavefront aberration, represents not only a thermal lensing effect but also an electronic lensing effect. The thermally induced defocus is more dominant at high repetition rate than the electronically induced defocus.

Název v anglickém jazyce

Wavefront aberration measurement in a cryogenically cooled Yb:YAG slab using a wavefront sensor

Popis výsledku anglicky

We investigated wavefront aberrations in a cryogenically cooled Yb:YAG slab with a wavefront sensor using a probe beam technique under non-lasing condition. To analyze the pump-induced phase aberrations created in the crystal, the measured wavefronts were fitted with orthonormal Zernike polynomials. The Yb:YAG crystal of 2 mm thickness, 10 mm diameter, and 3 at.% doping concentration was mounted in a copper holder in a closed-loop pulse tube cryostat with cooling capacity of 12 W at 100 K. The gain medium was single-end pumped by a fiber-coupled laser diode at pumping intensity of similar to 6.5 kW/cm(2) with a maximum repetition rate of 100 Hz, pulse duration of 1 ms, and pump spot diameter of 2.5 mm. The time resolved measurement revealed that defocus, which was the main wavefront aberration, represents not only a thermal lensing effect but also an electronic lensing effect. The thermally induced defocus is more dominant at high repetition rate than the electronically induced defocus.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

10306 - Optics (including laser optics and quantum optics)

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proc. SPIE Vol. 10238 - High-Power, High-Energy, and High-Intensity Laser Technology III

ISBN

978-1-5106-0977-8

ISSN

0277-786X

e-ISSN

1996-756X

Počet stran výsledku

8

Strana od-do

—

Název nakladatele

SPIE

Místo vydání

Bellingham

Místo konání akce

Praha

Datum konání akce

24. 4. 2017

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000407286200019