Influence of Temperature on Nd:YAG/V:YAG Compact Laser Generation at 1444 nm

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Influence of Temperature on Nd:YAG/V:YAG Compact Laser Generation at 1444 nm

Popis výsledku v původním jazyce

Compact Q-switched diode-pumped laser, emitting radiation at eye-safe wavelength 1444 nm, was studied. This laser was based on composite crystal consisting of 4 mm long Nd:YAG active medium diffusion bonded with 1 mm long V:YAG saturable absorber. The laser resonator mirrors were directly deposited onto the composite crystal surfaces. The output coupler with reflectivity 94 % for the generated wavelength 1444 nm was placed on the V3 + -doped part. Temperature dependence of giant pulse energy and lengthwas studied independently on pumping pulses duty cycle. It was found that for constant duty cycle 1 % and for crystal holder temperature rise from 8.2 up to 43.2 C the pulse width dropped from 31 to 5.1 ns and pulse energy rose from 17 to 57 uJ. From a mathematical model of passively Q-switched laser it follows that this behaviour can be explained by temperature caused increase of ground-state absorption and ground-state to excited-state absorption ratio of V:YAG saturable absorber.

Název v anglickém jazyce

Influence of Temperature on Nd:YAG/V:YAG Compact Laser Generation at 1444 nm

Popis výsledku anglicky

Compact Q-switched diode-pumped laser, emitting radiation at eye-safe wavelength 1444 nm, was studied. This laser was based on composite crystal consisting of 4 mm long Nd:YAG active medium diffusion bonded with 1 mm long V:YAG saturable absorber. The laser resonator mirrors were directly deposited onto the composite crystal surfaces. The output coupler with reflectivity 94 % for the generated wavelength 1444 nm was placed on the V3 + -doped part. Temperature dependence of giant pulse energy and lengthwas studied independently on pumping pulses duty cycle. It was found that for constant duty cycle 1 % and for crystal holder temperature rise from 8.2 up to 43.2 C the pulse width dropped from 31 to 5.1 ns and pulse energy rose from 17 to 57 uJ. From a mathematical model of passively Q-switched laser it follows that this behaviour can be explained by temperature caused increase of ground-state absorption and ground-state to excited-state absorption ratio of V:YAG saturable absorber.

Druh

D - Stať ve sborníku

CEP obor

BH - Optika, masery a lasery

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2010

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings of SPIE Vol.7578 - Solid State Lasers XIX: Technology and Devices

ISBN

978-0-8194-7974-7

ISSN

0277-786X

e-ISSN

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Počet stran výsledku

10

Strana od-do

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Název nakladatele

SPIE

Místo vydání

Washington

Místo konání akce

San Francisco

Datum konání akce

23. 1. 2010

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000284936100070