A comprehensive study of second and third harmonic conversion efficiency, angular and temperature tolerance and long-term stability in lithium triborate crystals using a 10-J-class laser

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F25%3A00644952" target="_blank" >RIV/68378271:_____/25:00644952 - isvavai.cz</a>

Výsledek na webu

<a href="https://hdl.handle.net/11104/0374787" target="_blank" >https://hdl.handle.net/11104/0374787</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1017/hpl.2025.10067" target="_blank" >10.1017/hpl.2025.10067</a>

Jazyk výsledku

angličtina

Název v původním jazyce

A comprehensive study of second and third harmonic conversion efficiency, angular and temperature tolerance and long-term stability in lithium triborate crystals using a 10-J-class laser

Popis výsledku v původním jazyce

We present a study of second harmonic generation (SHG) and third harmonic generation (THG) in lithium triborate (LBO) crystals using a high-energy, 10-J-class, 10 Hz ytterbium-doped yttrium aluminum garnet laser system. We achieved high conversion efficiencies of 75% for SHG and 56% for THG for Gaussian-like temporal pulse shapes and top-hat-like beam profiles. The angular and temperature dependence of the LBO crystals was measured and validated through numerical simulations. The SHG process exhibited an angular acceptance bandwidth of 1.33 mrad and a temperature acceptance bandwidth of 2.61 K, while the THG process showed 1.19 mrad and 1.35 K, respectively. In addition, long-term stability measurements revealed root mean square energy stabilities of 1.3% for SHG and 1.24% for THG. These results showcase the reliability of LBO crystals for high-energy, high-average-power harmonic generation. The developed system offers automated switching between harmonics provided at the system output. The system can be easily adapted to neodymium-doped yttrium aluminum garnet based pump lasers as well.

Název v anglickém jazyce

A comprehensive study of second and third harmonic conversion efficiency, angular and temperature tolerance and long-term stability in lithium triborate crystals using a 10-J-class laser

Popis výsledku anglicky

We present a study of second harmonic generation (SHG) and third harmonic generation (THG) in lithium triborate (LBO) crystals using a high-energy, 10-J-class, 10 Hz ytterbium-doped yttrium aluminum garnet laser system. We achieved high conversion efficiencies of 75% for SHG and 56% for THG for Gaussian-like temporal pulse shapes and top-hat-like beam profiles. The angular and temperature dependence of the LBO crystals was measured and validated through numerical simulations. The SHG process exhibited an angular acceptance bandwidth of 1.33 mrad and a temperature acceptance bandwidth of 2.61 K, while the THG process showed 1.19 mrad and 1.35 K, respectively. In addition, long-term stability measurements revealed root mean square energy stabilities of 1.3% for SHG and 1.24% for THG. These results showcase the reliability of LBO crystals for high-energy, high-average-power harmonic generation. The developed system offers automated switching between harmonics provided at the system output. The system can be easily adapted to neodymium-doped yttrium aluminum garnet based pump lasers as well.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10306 - Optics (including laser optics and quantum optics)

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

2025

Kód důvěrnosti údajů

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

Název periodika

High Power Laser Science and Engineering

ISSN

2095-4719

e-ISSN

2052-3289

Svazek periodika

13

Číslo periodika v rámci svazku

Sept

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

9

Strana od-do

e81

Kód UT WoS článku

001638073000001

EID výsledku v databázi Scopus

2-s2.0-105015552559