Diode-side-pumped monolithic Nd:YAG slab laser

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F17%3A00315770" target="_blank" >RIV/68407700:21340/17:00315770 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1117/12.2265705" target="_blank" >http://dx.doi.org/10.1117/12.2265705</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1117/12.2265705" target="_blank" >10.1117/12.2265705</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Diode-side-pumped monolithic Nd:YAG slab laser

Popis výsledku v původním jazyce

Compact, high-efficient, side-pumped monolithic Nd:YAG slab laser is presented. Designed active crystal shape ensures four internal reflections of generated laser radiation forming a ring resonator with high gain. A horizontal projection of the active medium form was a isosceles trapezoid with 18.6 mm long base, and 5 mm height. The angels between long base and legs are 87 deg. The thickness of the slab was 4 mm. Both base-sides and one leg-side was high reflective for lasing radiation. Second leg-side was partially reflective for lasing radiation and serves as an output coupler. The longer base-side was highly transparent for pumping radiation. The opposite base-side was highly reflecting for pump. To increase the pump absorption efficiency Nd-doping concentration was 1.4% Nd/Y. As a pump source, single-bar quasi-cw fast-axis collimated laser diode JOLD-180-QPFN (Jenoptik) with peak power 180 W at 808 nm and output beam 10 x 0 : 9 mm without any further optics was used for slab side-pumping. The pumping pulses with repetition rate 5 Hz were 250 mu s long (maximum pump energy 39 mJ). The Nd: YAG laser was operated at 1.06 1 mu m. Two external mirrors (one totally reflecting, second with reflectivity 80% at 1.06 1 m) were used to form the oscillator. The laser was tested in the free-running regime. The maximum laser output energy reached was 5.9 mJ which corresponds to optical-to-optical efficiency of 15 %. The laser slope efficiency in respect to laser diode output was 20 %. The divergence of multimode output beam was 7 x 2 : 5 mrad.

Název v anglickém jazyce

Diode-side-pumped monolithic Nd:YAG slab laser

Popis výsledku anglicky

Compact, high-efficient, side-pumped monolithic Nd:YAG slab laser is presented. Designed active crystal shape ensures four internal reflections of generated laser radiation forming a ring resonator with high gain. A horizontal projection of the active medium form was a isosceles trapezoid with 18.6 mm long base, and 5 mm height. The angels between long base and legs are 87 deg. The thickness of the slab was 4 mm. Both base-sides and one leg-side was high reflective for lasing radiation. Second leg-side was partially reflective for lasing radiation and serves as an output coupler. The longer base-side was highly transparent for pumping radiation. The opposite base-side was highly reflecting for pump. To increase the pump absorption efficiency Nd-doping concentration was 1.4% Nd/Y. As a pump source, single-bar quasi-cw fast-axis collimated laser diode JOLD-180-QPFN (Jenoptik) with peak power 180 W at 808 nm and output beam 10 x 0 : 9 mm without any further optics was used for slab side-pumping. The pumping pulses with repetition rate 5 Hz were 250 mu s long (maximum pump energy 39 mJ). The Nd: YAG laser was operated at 1.06 1 mu m. Two external mirrors (one totally reflecting, second with reflectivity 80% at 1.06 1 m) were used to form the oscillator. The laser was tested in the free-running regime. The maximum laser output energy reached was 5.9 mJ which corresponds to optical-to-optical efficiency of 15 %. The laser slope efficiency in respect to laser diode output was 20 %. The divergence of multimode output beam was 7 x 2 : 5 mrad.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20201 - Electrical and electronic engineering

Projekt

<a href="/cs/project/TA03011141" target="_blank" >TA03011141: Velkoobjemové oxidické monokrystaly pro hi-tech optoelektronické aplikace</a><br>

Návaznosti

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

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

7

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

000407286200031