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

Result code in 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>

Result on the web

<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>

Result language

angličtina

Original language name

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

Original language description

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.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

20201 - Electrical and electronic engineering

Project

<a href="/en/project/FW01010219" target="_blank" >FW01010219: Multicomponent single crystal materials for solid state lasers</a><br>

Continuities

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

Publication year

2023

Confidentiality

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

Article name in the collection

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

Number of pages

7

Pages from-to

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Publisher name

SPIE

Place of publication

Bellingham (stát Washington)

Event location

Praha

Event date

Apr 24, 2023

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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