Nano-crystal and microstructure formation in fluoride photo-thermo-refractive glass using chirp-controlled ultrafast laser bessel beams

Yunjie Zhang; Xu Wang; Guodong Zhang; Razvan Stoian; Guanghua Cheng

doi:10.3390/nano11061432

Nano-crystal and microstructure formation in fluoride photo-thermo-refractive glass using chirp-controlled ultrafast laser bessel beams

Yunjie Zhang, Xu Wang, Guodong Zhang, Razvan Stoian, Guanghua Cheng

School of Artificial Intelligence, OPtics and Electronics

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

Nano-crystals were formed in the exposed regions of photo-thermo-refractive glass un-dergoing irradiation with zeroth order chirp-controlled ultrafast laser Bessel beams and subse-quent heat treatment. Effects of various writing powers, pulse durations and heat treatment time on the distribution and the size of the nano-crystals were investigated. The results show that nano-crystals’ distribution depended on the laser power density spatial shape, while the size of the nano-crystals is quasi-independent. However, the average diameter of the nano-crystals was af-fected by the heat treatment time, decreasing from 175 to 105 nm with the time halved. In addition, using crystallographic characterization by X-ray diffraction, the nano-crystal composition in the laser-exposed regions was detected to be sodium fluoride.

Original language	English
Article number	1432
Journal	Nanomaterials
Volume	11
Issue number	6
DOIs	https://doi.org/10.3390/nano11061432
State	Published - Jun 2021

Keywords

Microstruc-ture fabrication
Photosensitive materials
Ultrafast nonlinear optics
Ultrafast technology

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10.3390/nano11061432

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title = "Nano-crystal and microstructure formation in fluoride photo-thermo-refractive glass using chirp-controlled ultrafast laser bessel beams",

abstract = "Nano-crystals were formed in the exposed regions of photo-thermo-refractive glass un-dergoing irradiation with zeroth order chirp-controlled ultrafast laser Bessel beams and subse-quent heat treatment. Effects of various writing powers, pulse durations and heat treatment time on the distribution and the size of the nano-crystals were investigated. The results show that nano-crystals{\textquoteright} distribution depended on the laser power density spatial shape, while the size of the nano-crystals is quasi-independent. However, the average diameter of the nano-crystals was af-fected by the heat treatment time, decreasing from 175 to 105 nm with the time halved. In addition, using crystallographic characterization by X-ray diffraction, the nano-crystal composition in the laser-exposed regions was detected to be sodium fluoride.",

keywords = "Microstruc-ture fabrication, Photosensitive materials, Ultrafast nonlinear optics, Ultrafast technology",

author = "Yunjie Zhang and Xu Wang and Guodong Zhang and Razvan Stoian and Guanghua Cheng",

note = "Publisher Copyright: {\textcopyright} 2021 by the authors. Licensee MDPI, Basel, Switzerland.",

year = "2021",

month = jun,

doi = "10.3390/nano11061432",

language = "英语",

volume = "11",

journal = "Nanomaterials",

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T1 - Nano-crystal and microstructure formation in fluoride photo-thermo-refractive glass using chirp-controlled ultrafast laser bessel beams

AU - Zhang, Yunjie

AU - Wang, Xu

AU - Zhang, Guodong

AU - Stoian, Razvan

AU - Cheng, Guanghua

PY - 2021/6

Y1 - 2021/6

N2 - Nano-crystals were formed in the exposed regions of photo-thermo-refractive glass un-dergoing irradiation with zeroth order chirp-controlled ultrafast laser Bessel beams and subse-quent heat treatment. Effects of various writing powers, pulse durations and heat treatment time on the distribution and the size of the nano-crystals were investigated. The results show that nano-crystals’ distribution depended on the laser power density spatial shape, while the size of the nano-crystals is quasi-independent. However, the average diameter of the nano-crystals was af-fected by the heat treatment time, decreasing from 175 to 105 nm with the time halved. In addition, using crystallographic characterization by X-ray diffraction, the nano-crystal composition in the laser-exposed regions was detected to be sodium fluoride.

AB - Nano-crystals were formed in the exposed regions of photo-thermo-refractive glass un-dergoing irradiation with zeroth order chirp-controlled ultrafast laser Bessel beams and subse-quent heat treatment. Effects of various writing powers, pulse durations and heat treatment time on the distribution and the size of the nano-crystals were investigated. The results show that nano-crystals’ distribution depended on the laser power density spatial shape, while the size of the nano-crystals is quasi-independent. However, the average diameter of the nano-crystals was af-fected by the heat treatment time, decreasing from 175 to 105 nm with the time halved. In addition, using crystallographic characterization by X-ray diffraction, the nano-crystal composition in the laser-exposed regions was detected to be sodium fluoride.

KW - Microstruc-ture fabrication

KW - Photosensitive materials

KW - Ultrafast nonlinear optics

KW - Ultrafast technology

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DO - 10.3390/nano11061432

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JF - Nanomaterials

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Nano-crystal and microstructure formation in fluoride photo-thermo-refractive glass using chirp-controlled ultrafast laser bessel beams

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Keywords

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