scholarly journals Towards Exciton-Polaritons in an Individual MoS2 Nanotube

Nanomaterials ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 373 ◽  
Author(s):  
Dmitrii Kazanov ◽  
Maxim Rakhlin ◽  
Alexander Poshakinskiy ◽  
Tatiana Shubina
Keyword(s):  
Low Temperature ◽  
Whispering Gallery Modes ◽  
Photoluminescence Spectra ◽  
Exciton Resonance ◽  
High Quality ◽  
Energy Fluctuation ◽  
Rabi Splitting ◽  
Whispering Gallery ◽  
Exciton Polaritons ◽  
Optical Modes

We measure low-temperature micro-photoluminescence spectra along a MoS 2 nanotube, which exhibit the peaks of the optical whispering gallery modes below the exciton resonance. The energy fluctuation and width of these peaks are determined by the changes of the nanotube wall thickness and propagation of the optical modes along the nanotube axis, respectively. We demonstrate the potential of the high-quality nanotubes for realization of the strong coupling between exciton and optical modes when the Rabi splitting can reach 400 meV. We show how the formation of exciton-polaritons in such structures will be manifested in the micro-photoluminescence spectra and analyze the conditions needed to realize that.

scholarly journals A Vibrometer Based on Magnetorheological Optical Resonators

Vibration ◽  
2018 ◽  
Vol 1 (2) ◽  
pp. 239-249 ◽  
Author(s):  
Edoardo Rubino ◽  
Tindaro Ioppolo
Keyword(s):  
Permanent Magnet ◽  
Quality Factor ◽  
Polyvinyl Chloride ◽  
Optical Quality ◽  
Optical Resonator ◽  
Experimental Results ◽  
Whispering Gallery Modes ◽  
Moving Surface ◽  
Whispering Gallery ◽  
Optical Modes

This paper addresses the feasibility of an optical vibrometer that is based on the shift of the optical modes, also known as whispering gallery modes (WGMs), of a magnetorheological optical resonator. The optical resonator that is used in this study is fabricated by mixing polyvinyl chloride plastisol with magnetically polarizable particles. When a permanent magnet that is located nearby the optical resonator is moved, it induces a perturbation of the morphology of the resonator, due to the magnetostrictive effect. This change in the morphology induces a shift in the optical modes of the resonator. The shift of the optical modes can be related to the displacement of the permanent magnet. The proposed sensor concept is based on monitoring the displacement of a tiny magnet that is attached to a moving surface. The optical quality factor of the resonator used in these studies was of the order of 106. The experimental results show a sensitivity of 0.32 pm/μm and a resolution that is less than 300 nm.

Accurately calculating high quality factor of whispering-gallery modes with boundary element method

2009 ◽  
Vol 26 (11) ◽  
pp. 2050 ◽  
Author(s):  
Chang-Ling Zou ◽  
Yong Yang ◽  
Yun-Feng Xiao ◽  
Chun-Hua Dong ◽  
Zheng-Fu Han ◽  
...  
Keyword(s):  
Boundary Element Method ◽  
Boundary Element ◽  
Quality Factor ◽  
High Quality Factor ◽  
Whispering Gallery Modes ◽  
High Quality ◽  
Whispering Gallery ◽  
Element Method

scholarly journals Low-Temperature Properties of Whispering-Gallery Modes in Isotopically Pure Silicon-28

2019 ◽  
Vol 11 (4) ◽  
Author(s):  
J. Bourhill ◽  
M. Goryachev ◽  
D.L. Creedon ◽  
B.C. Johnson ◽  
D.N. Jamieson ◽  
...  
Keyword(s):  
Low Temperature ◽  
Whispering Gallery Modes ◽  
Pure Silicon ◽  
Whispering Gallery

scholarly journals Visible Photoluminescence from Cubic (3C) Silicon Carbide Microdisks Coupled to High Quality Whispering Gallery Modes

ACS Photonics ◽  
2014 ◽  
Vol 2 (1) ◽  
pp. 14-19 ◽  
Author(s):  
Marina Radulaski ◽  
Thomas M. Babinec ◽  
Kai Müller ◽  
Konstantinos G. Lagoudakis ◽  
Jingyuan Linda Zhang ◽  
...  
Keyword(s):  
Silicon Carbide ◽  
Whispering Gallery Modes ◽  
High Quality ◽  
Whispering Gallery ◽  
Visible Photoluminescence

scholarly journals Quasi-whispering gallery modes of exciton-polaritons in a ZnO microrod

2010 ◽  
Vol 18 (15) ◽  
pp. 15371 ◽  
Author(s):  
Liaoxin Sun ◽  
Hongxing Dong ◽  
Wei Xie ◽  
Zhenghua An ◽  
Xuechu Shen ◽  
...  
Keyword(s):  
Whispering Gallery Modes ◽  
Whispering Gallery ◽  
Exciton Polaritons

3C-SiC Microdisks for Visible Photonics

2016 ◽  
Vol 858 ◽  
pp. 711-714
Author(s):  
Marina Radulaski ◽  
Thomas Babinec ◽  
Jing Yuan Linda Zhang ◽  
Sonia Buckley ◽  
Yousif Kelaita ◽  
...  
Keyword(s):  
Second Harmonic Generation ◽  
Quality Factor ◽  
Harmonic Generation ◽  
Room Temperature ◽  
Second Harmonic ◽  
Whispering Gallery Modes ◽  
High Quality ◽  
Whispering Gallery ◽  
Visible Wavelengths ◽  
Sic Film

We fabricated and characterized record small microdisk resonators in thin (210 nm) 3C-SiC film grown on Si (100) substrate. It was found to support high quality factor whispering gallery modes at visible wavelengths. We demonstrated room temperature coupling of these modes to the intrinsic photoluminescence of 3C-SiC at room temperatures and identified their polarization. Finally, we discussed applications for quasi-phasematched second harmonic generation from infrared visible wavelengths.

scholarly journals Люминесцентные свойства углеродных наноточек на поверхности сферического микрорезонатора

2020 ◽  
Vol 62 (10) ◽  
pp. 1690
Author(s):  
Д.А. Еуров ◽  
E.Ю. Стовпяга ◽  
Д.А. Курдюков ◽  
А.А. Дукин ◽  
А.Н. Смирнов ◽  
...  
Keyword(s):  
Spherical Wave ◽  
Whispering Gallery Modes ◽  
Hybrid Structures ◽  
Carbon Nanodots ◽  
Photoluminescence Spectra ◽  
Transfer Matrices ◽  
Whispering Gallery ◽  
Near Ir ◽  
Spherical Silica ◽  
Spherical Silica Particles

Hybrid structures were synthesized from monodisperse spherical silica particles, which are spherical microcavities, and emitting carbon nanodots on their surface. Carbon nanodots are attached to the surface of the particles by controlled coagulation in three solvents: ammonia, hydrochloric acid and glycerol. Intense narrow lines associated with the emission of nanodots in the whispering gallery modes of a spherical microcavity were observed in the photoluminescence spectra of hybrid structures over the entire radiation wavelength range of carbon nanodots from UV to near IR. All observed lines were identified by comparison with the spectral positions of the whispering gallery modes calculated by the method of spherical wave transfer matrices.

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