相同关键词【color centers】论文列表 -- 中国光学期刊网

Reviews

Color centers in wide-bandgap semiconductors for subdiffraction imaging: a review

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Stefania Castelletto ^1,*Alberto Boretti ²

Author Affiliations

Abstract

¹ RMIT University, School of Engineering, Bundoora, Australia

² Prince Mohammad Bin Fahd University, Deanship of Research, Al Khobar, Saudi Arabia

Solid-state atomic-sized color centers in wide-band-gap semiconductors, such as diamond, silicon carbide, and hexagonal boron nitride, are important platforms for quantum technologies, specifically for single-photon sources and quantum sensing. One of the emerging applications of these quantum emitters is subdiffraction imaging. This capability is provided by the specific photophysical properties of color centers, such as high dipole moments, photostability, and a variety of spectral ranges of the emitters with associated optical and microwave control of their quantum states. We review applications of color centers in traditional super-resolution microscopy and quantum imaging methods, and compare relative performance. The current state and perspectives of their applications in biomedical, chemistry, and material science imaging are outlined.

color centers quantum optics single photon emitters super-resolution imaging transparent semiconductors

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Advanced Photonics

2021, 3(5): 054001

非线性光学

量子相干调控金刚石锡空位色心光学双稳研究

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章建帅张红军 ^*孙辉

作者单位

摘要

陕西师范大学物理学与信息技术学院, 陕西西安 710119

基于电磁感应透明原理理论研究了金刚石锡空位色心系统的光学双稳特性。研究表明,通过改变系统的参数,即探测场失谐量、耦合场失谐量和强度、合作参数等,可以显著改变系统的量子相干特性,从而可以有效调控该固态系统的光学双稳的阈值。另外,适当地调节耦合激光场的强度,可以实现光学双稳态和多稳态的相互转化。

非线性光学光学双稳量子相干金刚石锡空位色心

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光学学报

2020, 40(12): 1219001

Using LiF crystals for high-performance neutron imaging with micron-scale resolution

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A. Faenov ^1,2,*M. Matsubayashi ³T. Pikuz ^2,4Y. Fukuda ⁵[ ... ]Y. Kato ⁷

Author Affiliations

Abstract

¹ Institute for Academic Initiatives, Suita, Osaka University, 565-0871, Japan

² Joint Institute for High Temperatures, Russian Academy of Sciences, Izhorskaja Street 13/19, Moscow, Russia

³ Quantum Beam Science Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan

⁴ PPC and Graduate School of Engineering, Suita, Osaka University, 565-0871, Japan

⁵ Quantum Beam Science Center, Japan Atomic Energy Agency, Kyoto 619-0215, Japan

⁶ Nippon SOKEN, Inc., Iwaya 14, Shimohasumi, Nishio, Aichi 445-0012, Japan

⁷ The Graduate School for the Creation of New Photonics Industries, Hamamatsu, Shizuoka 431-1202, Japan

This paper describes an overview of our recent discovery – clear demonstration that LiF crystals can be efficiently used as a high-performance neutron imaging detector based on optically stimulated luminescence of color centers generated by neutron irradiation. It is shown that the neutron images we have obtained are almost free from granular noise, have a spatial resolution of ～5.4 μm and a linear response with a dynamic range of at least 10³. The high contrast and good sensitivity of LiF crystals allow us to distinguish two holes with less than 2% transmittance difference. We propose to use such detectors in areas where high spatial resolution with high image gradation resolution is needed, including diagnostics of different plasma sources such as laser and z-pinch produced plasmas.

color centers color centers LiF crystals LiF crystals neutron imaging neutron imaging neutrons neutrons plasma diagnostics plasma diagnostics

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High Power Laser Science and Engineering

2015, 3(4): 04000001

材料合成及性能研究

重离子辐照SiO₂通过能量损失产生发光色心的研究

宋银 ^1,2,*孟彦成 ²张崇宏 ²杨义涛 ²[ ... ]贺德衍 ¹

作者单位

摘要

¹ 兰州大学物理科学与技术学院, 甘肃兰州 730000

² 中国科学院近代物理研究所, 甘肃兰州 730000

通过红外光谱和荧光发射光谱分别对600 keV、4 MeV和5 MeV Kr离子辐照的SiO2进行发光特性的研究。在低能量辐照体系中, 简单色心(F2色心)的形成在损伤过程中占据主导地位, 其主要诱发蓝光发射带; 在高能离子辐照条件下, 离子径迹上的能量密度较大, 因此缺陷浓度的增大产生了一些缺陷团簇和离子径迹, 形成了复杂的色心(F+2和F+3色心等)并诱发了强烈的绿光发射带和红光发射带。该实验结果与能量损失过程中统一热峰理论模型(一个综合的基于电子能损与核能损的非弹性碰撞模型和弹性碰撞模型)的模拟结果能够很好地吻合, 表明在keV～MeV能区上存在电子能损过程与核能损过程的协同效应。

重离子辐照色心发光热峰模型 heavy ion irradiation color centers PL PL spectra thermal spike

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发光学报

2012, 33(10): 1049

材料

Yb:YAG晶体中的色心

尹红兵邓佩珍张俊洲吴光照干福熹

作者单位

摘要

中国科学院上海光学精密机械研究所, 上海 201800

在用引上法生长的Yb:YAG晶体中,存在一个独特的色心,其吸收带位于375nm和625nm,随着Yb2O3掺杂浓度的增加,色心浓度增加。探讨了晶体生长过程中色心形成机理。高强C射线辐照Yb:YAG晶体,诱导大量色心的形成。晶体中的色心对激发态Yb3+离子的荧光寿命具有淬灭效应,因此,Yb:YAG激光晶体需要经高温退火,消除色心的影响。

晶体色心

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光学学报

1998, 18(2): 247

Laser Physics and Laser Chemistry

Low-Temperature Spectral Properties and Zero-Phonon Transitions of Alkali Halide Crystal Materials Bombarded with Electrons and Implanted with Ions

GU Hongen

作者单位

摘要

Department of Applied Physics, Tianjin University, Tianjin 300072, China

zero-phonon transition. color centers

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