Transient features of graphitization and nitrogen-vacancy color centers in a diamond fabricated by localization femtosecond laser direct writing

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外文摘要：Femtosecond laser direct writing provides an efficient approach to fabricating single nitrogen vacancy(NV)color centers with a relatively high yield.Different from previously reported NV color centers with a random distribution in a bulk diamond or nanocrystals,this gives an opportunity to study the photophysical properties of single NV color centers with precise numbers and positions.However,ultrafast studies on single NV color centers prepared by localization femtosecond laser direct writing are still rare,especially for the graphitization inside a diamond and its relationship with single NV color centers.Here,we report the broadband transient absorption(TA)spectroscopic features of the graphitization and NV color centers in a diamond fabricated by localization femtosecond laser direct writing at room temperature under 400 nm excitation.In comparison with the graphene oxide film,the bleaching features of the graphitization point array in a diamond are similar to reduced graphene oxide,accompanied by excited state absorption signals from local carbon atom vacancy defects in graphene-like structures induced by laser writing.On the other hand,transient features of laser processing array containing single NV color centers with a yield of～50％are different from those of the graphitization point array.Our findings suggest that for ultrashort pulse processing of diamonds,broadband TA spectral signals are sensitive to the surrounding atomic environment of processing sites,which could be applied to laser writing point defects in other materials used as solid-state single photon sources.

外文关键词：

nitrogen-vacancy color centergraphitizationdiamondfemtosecond laser direct writingultrafast spectroscopy

作者：

CUI Lin、YIN SiYu、HU ZiFan、WANG Lei

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作者单位：

State Key Laboratory of Integrated Optoelectronics,College of Electronic Science and Engineering,Jilin University,Changchun 130012,China

基金：

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaChina Postdoctoral Science Foundation

项目编号：

62175088619278142177308721603083219030352016M590259

出版年：

2024

DOI：

10.1007/s11431-023-2618-3

中国科学:技术科学(英文版)

中国科学院

中国科学:技术科学(英文版)

CSTPCDEI

影响因子：1.056

ISSN：1674-7321

年,卷(期)：2024.67(8)