Comparison between Self-Raman Nd:YVO4 Lasers and NdYVO4/KGW Raman Lasers at Lime and Orange Wavelengths

The comparison of output powers between self-Raman Nd:YVO4 lasers and Nd:YVO4/KGW Raman lasers operating at lime and orange wavelengths is presented. We exploit the LBO crystal with cutting angle θ = 90° and φ = 8° f...

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Autores principales:	Chi-Chun Lee, Chien-Yen Huang, Hao-Yun Huang, Chao-Ming Chen, Chia-Han Tsou
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	Raman laser visible light solid-state laser Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/e866a0eed66649718354e7428d4864a9
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spelling	oai:doaj.org-article:e866a0eed66649718354e7428d4864a92021-11-25T16:43:42ZComparison between Self-Raman Nd:YVO<sub>4</sub> Lasers and NdYVO<sub>4</sub>/KGW Raman Lasers at Lime and Orange Wavelengths10.3390/app1122110682076-3417https://doaj.org/article/e866a0eed66649718354e7428d4864a92021-11-01T00:00:00Zhttps://www.mdpi.com/2076-3417/11/22/11068https://doaj.org/toc/2076-3417The comparison of output powers between self-Raman Nd:YVO<sub>4</sub> lasers and Nd:YVO<sub>4</sub>/KGW Raman lasers operating at lime and orange wavelengths is presented. We exploit the LBO crystal with cutting angle <i>θ</i> = 90° and <i>φ</i> = 8° for the lime wavelengths, and then we change the angle to <i>θ</i> = 90° and <i>φ</i> = 3.9° for the orange wavelengths. In self-Raman Nd:YVO<sub>4</sub> lasers, experimental results reveal that thermal loading can impact on the output performances, especially at the high pump power. However, by using a KGW crystal as Raman medium can remarkably share the thermal loading from gain medium. Besides, the designed coating for high reflectively at the Stokes field on the surface of KGW also improved the beam quality and reduced the lasing threshold. For self-Raman Nd:YVO<sub>4</sub> lasers, we have achieved the output powers of 6.54 W and 5.12 W at 559 nm and 588 nm, respectively. For Nd:YVO<sub>4</sub>/KGW Raman lasers, the output powers at 559 nm and 589 nm have been increased to 9.1 W and 7.54 W, respectively. All lasers operate at a quasi-CW regime with the repetition rate 50 Hz and the duty cycle 50%.Chi-Chun LeeChien-Yen HuangHao-Yun HuangChao-Ming ChenChia-Han TsouMDPI AGarticleRaman laservisible lightsolid-state laserTechnologyTEngineering (General). Civil engineering (General)TA1-2040Biology (General)QH301-705.5PhysicsQC1-999ChemistryQD1-999ENApplied Sciences, Vol 11, Iss 11068, p 11068 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Raman laser visible light solid-state laser Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
spellingShingle	Raman laser visible light solid-state laser Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999 Chi-Chun Lee Chien-Yen Huang Hao-Yun Huang Chao-Ming Chen Chia-Han Tsou Comparison between Self-Raman Nd:YVO<sub>4</sub> Lasers and NdYVO<sub>4</sub>/KGW Raman Lasers at Lime and Orange Wavelengths
description	The comparison of output powers between self-Raman Nd:YVO<sub>4</sub> lasers and Nd:YVO<sub>4</sub>/KGW Raman lasers operating at lime and orange wavelengths is presented. We exploit the LBO crystal with cutting angle <i>θ</i> = 90° and <i>φ</i> = 8° for the lime wavelengths, and then we change the angle to <i>θ</i> = 90° and <i>φ</i> = 3.9° for the orange wavelengths. In self-Raman Nd:YVO<sub>4</sub> lasers, experimental results reveal that thermal loading can impact on the output performances, especially at the high pump power. However, by using a KGW crystal as Raman medium can remarkably share the thermal loading from gain medium. Besides, the designed coating for high reflectively at the Stokes field on the surface of KGW also improved the beam quality and reduced the lasing threshold. For self-Raman Nd:YVO<sub>4</sub> lasers, we have achieved the output powers of 6.54 W and 5.12 W at 559 nm and 588 nm, respectively. For Nd:YVO<sub>4</sub>/KGW Raman lasers, the output powers at 559 nm and 589 nm have been increased to 9.1 W and 7.54 W, respectively. All lasers operate at a quasi-CW regime with the repetition rate 50 Hz and the duty cycle 50%.
format	article
author	Chi-Chun Lee Chien-Yen Huang Hao-Yun Huang Chao-Ming Chen Chia-Han Tsou
author_facet	Chi-Chun Lee Chien-Yen Huang Hao-Yun Huang Chao-Ming Chen Chia-Han Tsou
author_sort	Chi-Chun Lee
title	Comparison between Self-Raman Nd:YVO<sub>4</sub> Lasers and NdYVO<sub>4</sub>/KGW Raman Lasers at Lime and Orange Wavelengths
title_short	Comparison between Self-Raman Nd:YVO<sub>4</sub> Lasers and NdYVO<sub>4</sub>/KGW Raman Lasers at Lime and Orange Wavelengths
title_full	Comparison between Self-Raman Nd:YVO<sub>4</sub> Lasers and NdYVO<sub>4</sub>/KGW Raman Lasers at Lime and Orange Wavelengths
title_fullStr	Comparison between Self-Raman Nd:YVO<sub>4</sub> Lasers and NdYVO<sub>4</sub>/KGW Raman Lasers at Lime and Orange Wavelengths
title_full_unstemmed	Comparison between Self-Raman Nd:YVO<sub>4</sub> Lasers and NdYVO<sub>4</sub>/KGW Raman Lasers at Lime and Orange Wavelengths
title_sort	comparison between self-raman nd:yvo<sub>4</sub> lasers and ndyvo<sub>4</sub>/kgw raman lasers at lime and orange wavelengths
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/e866a0eed66649718354e7428d4864a9
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Comparison between Self-Raman Nd:YVO<sub>4</sub> Lasers and NdYVO<sub>4</sub>/KGW Raman Lasers at Lime and Orange Wavelengths

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