A vacuum ultraviolet laser with a submicrometer spot for spatially resolved photoemission spectroscopy

Vacuum ultraviolet (VUV) lasers have demonstrated great potential as the light source for various spectroscopies, which, if they can be focused into a small beam spot, will not only allow investigation of mesoscopic materials and structures but also find application in the manufacture of nano-object...

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Autores principales: Mao, Yuanhao, Zhao, Dong, Yan, Shen, Zhang, Hongjia, Li, Juan, Han, Kai, Xu, Xiaojun, Guo, Chuan, Yang, Lexian, Zhang, Chaofan, Huang, Kun, Chen, Yulin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2021
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7820001/
https://www.ncbi.nlm.nih.gov/pubmed/33479192
http://dx.doi.org/10.1038/s41377-021-00463-3
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author Mao, Yuanhao
Zhao, Dong
Yan, Shen
Zhang, Hongjia
Li, Juan
Han, Kai
Xu, Xiaojun
Guo, Chuan
Yang, Lexian
Zhang, Chaofan
Huang, Kun
Chen, Yulin
author_facet Mao, Yuanhao
Zhao, Dong
Yan, Shen
Zhang, Hongjia
Li, Juan
Han, Kai
Xu, Xiaojun
Guo, Chuan
Yang, Lexian
Zhang, Chaofan
Huang, Kun
Chen, Yulin
author_sort Mao, Yuanhao
collection PubMed
description Vacuum ultraviolet (VUV) lasers have demonstrated great potential as the light source for various spectroscopies, which, if they can be focused into a small beam spot, will not only allow investigation of mesoscopic materials and structures but also find application in the manufacture of nano-objects with excellent precision. In this work, we report the construction of a 177 nm VUV laser that can achieve a record-small (~0.76 μm) focal spot at a long focal length (~45 mm) by using a flat lens without spherical aberration. The size of the beam spot of this VUV laser was tested using a metal grating and exfoliated graphene flakes, and we demonstrated its application in a fluorescence spectroscopy study on pure and Tm(3+)-doped NaYF(4) microcrystals, revealing a new emission band that cannot be observed in the traditional up-conversion process. In addition, this laser system would be an ideal light source for spatially and angle-resolved photoemission spectroscopy.
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spelling pubmed-78200012021-01-28 A vacuum ultraviolet laser with a submicrometer spot for spatially resolved photoemission spectroscopy Mao, Yuanhao Zhao, Dong Yan, Shen Zhang, Hongjia Li, Juan Han, Kai Xu, Xiaojun Guo, Chuan Yang, Lexian Zhang, Chaofan Huang, Kun Chen, Yulin Light Sci Appl Article Vacuum ultraviolet (VUV) lasers have demonstrated great potential as the light source for various spectroscopies, which, if they can be focused into a small beam spot, will not only allow investigation of mesoscopic materials and structures but also find application in the manufacture of nano-objects with excellent precision. In this work, we report the construction of a 177 nm VUV laser that can achieve a record-small (~0.76 μm) focal spot at a long focal length (~45 mm) by using a flat lens without spherical aberration. The size of the beam spot of this VUV laser was tested using a metal grating and exfoliated graphene flakes, and we demonstrated its application in a fluorescence spectroscopy study on pure and Tm(3+)-doped NaYF(4) microcrystals, revealing a new emission band that cannot be observed in the traditional up-conversion process. In addition, this laser system would be an ideal light source for spatially and angle-resolved photoemission spectroscopy. Nature Publishing Group UK 2021-01-21 /pmc/articles/PMC7820001/ /pubmed/33479192 http://dx.doi.org/10.1038/s41377-021-00463-3 Text en © The Author(s) 2021 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Mao, Yuanhao
Zhao, Dong
Yan, Shen
Zhang, Hongjia
Li, Juan
Han, Kai
Xu, Xiaojun
Guo, Chuan
Yang, Lexian
Zhang, Chaofan
Huang, Kun
Chen, Yulin
A vacuum ultraviolet laser with a submicrometer spot for spatially resolved photoemission spectroscopy
title A vacuum ultraviolet laser with a submicrometer spot for spatially resolved photoemission spectroscopy
title_full A vacuum ultraviolet laser with a submicrometer spot for spatially resolved photoemission spectroscopy
title_fullStr A vacuum ultraviolet laser with a submicrometer spot for spatially resolved photoemission spectroscopy
title_full_unstemmed A vacuum ultraviolet laser with a submicrometer spot for spatially resolved photoemission spectroscopy
title_short A vacuum ultraviolet laser with a submicrometer spot for spatially resolved photoemission spectroscopy
title_sort vacuum ultraviolet laser with a submicrometer spot for spatially resolved photoemission spectroscopy
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7820001/
https://www.ncbi.nlm.nih.gov/pubmed/33479192
http://dx.doi.org/10.1038/s41377-021-00463-3
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