Comparison of compact laser Nd:YAG/V:YAG and Nd:YAP/V:YAG generating in the 1.3 µm spectral region

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F23%3A00368741" target="_blank" >RIV/68407700:21340/23:00368741 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1117/12.2665109" target="_blank" >https://doi.org/10.1117/12.2665109</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1117/12.2665109" target="_blank" >10.1117/12.2665109</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Comparison of compact laser Nd:YAG/V:YAG and Nd:YAP/V:YAG generating in the 1.3 µm spectral region

Popis výsledku v původním jazyce

The aim of this work was to design a compact Q-switched laser generating radiation in the 1.3 µm spectral region. Two active materials, Nd:YAG and Nd:YAP, were used to construct such a compact laser with stable nanosecond pulses which could be used as a laser source of LIDAR for autonomous vehicle control. A constructed laser was pumped longitudinally by a fiber-coupled laser diode (core diameter 400 µm, numerical aperture 0.22) in a pulse regime at a wavelength of around 805 nm in the range of repetition frequencies of 10 - 500 Hz. A V:YAG saturable absorber with an initial transmission of 85 % was used to achieve the Q-switched regime. The pumping resonator dielectric mirror had a high transmission for pumping radiation and high reflectivity for generated 1.3 µm radiation. The output resonator dielectric mirror reflectivity was 90 % @ 1.3 µm. The Nd:YAG/V:YAG laser provided radiation at a wavelength of 1318 nm with pulse energy up to 162 µJ, pulse length ~ 13.5 ns, and pulse peak power up to 12.3 kW. With the Nd:YAP/V:YAG compact laser generating at a wavelength of 1342 nm, a pulse energy of up to 193 µJ, pulse length ~ 11.8 ns, and pulse peak power up to 16.2 kW, was achieved. Generated pulse energy and peak power decay with increasing pumping frequency was steeper in the case of Nd:YAP/V:YAG laser due to poorer thermal conductivity of Nd:YAP crystal compared to Nd:YAG crystal. On the other hand, the Nd:YAP/V:YAG laser showed better stability of the wavelength and polarization of the output radiation. In the case of both lasers, linearly polarized radiation with TEM00 single-mode spatial profile was generated.

Název v anglickém jazyce

Comparison of compact laser Nd:YAG/V:YAG and Nd:YAP/V:YAG generating in the 1.3 µm spectral region

Popis výsledku anglicky

The aim of this work was to design a compact Q-switched laser generating radiation in the 1.3 µm spectral region. Two active materials, Nd:YAG and Nd:YAP, were used to construct such a compact laser with stable nanosecond pulses which could be used as a laser source of LIDAR for autonomous vehicle control. A constructed laser was pumped longitudinally by a fiber-coupled laser diode (core diameter 400 µm, numerical aperture 0.22) in a pulse regime at a wavelength of around 805 nm in the range of repetition frequencies of 10 - 500 Hz. A V:YAG saturable absorber with an initial transmission of 85 % was used to achieve the Q-switched regime. The pumping resonator dielectric mirror had a high transmission for pumping radiation and high reflectivity for generated 1.3 µm radiation. The output resonator dielectric mirror reflectivity was 90 % @ 1.3 µm. The Nd:YAG/V:YAG laser provided radiation at a wavelength of 1318 nm with pulse energy up to 162 µJ, pulse length ~ 13.5 ns, and pulse peak power up to 12.3 kW. With the Nd:YAP/V:YAG compact laser generating at a wavelength of 1342 nm, a pulse energy of up to 193 µJ, pulse length ~ 11.8 ns, and pulse peak power up to 16.2 kW, was achieved. Generated pulse energy and peak power decay with increasing pumping frequency was steeper in the case of Nd:YAP/V:YAG laser due to poorer thermal conductivity of Nd:YAP crystal compared to Nd:YAG crystal. On the other hand, the Nd:YAP/V:YAG laser showed better stability of the wavelength and polarization of the output radiation. In the case of both lasers, linearly polarized radiation with TEM00 single-mode spatial profile was generated.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20201 - Electrical and electronic engineering

Projekt

<a href="/cs/project/FW01010219" target="_blank" >FW01010219: Multikomponentní monokrystalické materiály pro laserové aplikace</a><br>

Návaznosti

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

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proc. SPIE 12577, High-power, High-energy Lasers and Ultrafast Optical Technologies

ISBN

978-1-5106-6274-2

ISSN

0277-786X

e-ISSN

1996-756X

Počet stran výsledku

7

Strana od-do

—

Název nakladatele

SPIE

Místo vydání

Bellingham (stát Washington)

Místo konání akce

Praha

Datum konání akce

24. 4. 2023

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

—