Room-temperature near-field reflection spectroscopy of semiconductor nanostructures

2007 ◽  
pp. 505-517
Author(s):  
W. Langbein ◽  
J. M. Hvam ◽  
S. Madsen
Keyword(s):  
Room Temperature ◽  
Near Field ◽  
Semiconductor Nanostructures ◽  
Reflection Spectroscopy

Room-Temperature Near-Field Reflection Spectroscopy of Single Quantum Wells

1997 ◽  
Vol 164 (1) ◽  
pp. 541-546 ◽  
Author(s):  
W. Langbein ◽  
J. M. Hvam ◽  
S. Madsen ◽  
M. Hetterich ◽  
C. Klingshirn
Keyword(s):  
Quantum Wells ◽  
Room Temperature ◽  
Near Field ◽  
Single Quantum ◽  
Reflection Spectroscopy

Near-field transmission and reflection spectroscopy for revealing absorption and scattering characteristics of single silver nanoplates

2020 ◽  
Vol 153 (14) ◽  
pp. 144703
Author(s):  
Hidetoshi Mizobata ◽  
Seiju Hasegawa ◽  
Mamoru Tamura ◽  
Takuya Iida ◽  
Kohei Imura
Keyword(s):  
Near Field ◽  
Reflection Spectroscopy ◽  
Silver Nanoplates ◽  
Transmission And Reflection

Near-field luminescence measurements on GaInAsP/InP double heterostructures at room temperature

1998 ◽  
Vol 37 (1) ◽  
pp. 106 ◽  
Author(s):  
J. Barenz ◽  
A. Eska ◽  
O. Hollricher ◽  
O. Marti ◽  
M. Wachter ◽  
...  
Keyword(s):  
Room Temperature ◽  
Near Field ◽  
Double Heterostructures

scholarly journals Сканирующая ближнепольная оптическая наноспектрофотометрия: метод наномасштабного измерения спектров поглощения единичных нанообъектов

2019 ◽  
Vol 45 (4) ◽  
pp. 17
Author(s):  
К.Е. Мoчалов ◽  
Д.О. Соловьева ◽  
И.С. Васкан ◽  
И.Р. Набиев
Keyword(s):  
Experimental Method ◽  
Distinctive Feature ◽  
Total Internal Reflection ◽  
Rhodamine 6G ◽  
Near Field ◽  
Plasmonic Nanoparticles ◽  
Reflection Spectroscopy ◽  
Nanoscale Measurements ◽  
Internal Reflection Spectroscopy ◽  
Rhodamine 6G Dye

AbstractA new experimental method for nanoscale measurements of the absorption spectra of single nanoobjects has been developed based on scanning near-field optical microspectroscopy (SNOM) and nanospectrophotometry (NSP). The main distinctive feature of the proposed SNOM-NSP technique consists in depositing a sample onto a coverglass followed by its probing in the total internal reflection spectroscopy mode. This approach allows the number of analyzed samples to be significantly increased and provides the possibility of combining measurements with other optical techniques. The proposed SNOM-NSP method has been successfully used for studying single plasmonic nanoparticles and their complexes with Rhodamine 6G dye.

scholarly journals Exciton–phonon coupling strength in single-layer MoSe2 at room temperature

2020 ◽  
Author(s):  
Donghai Li ◽  
Chiara Trovatello ◽  
Stefano Dal Conte ◽  
Matthias Nuß ◽  
Giancarlo Soavi ◽  
...  
Keyword(s):  
Room Temperature ◽  
Research Effort ◽  
Transition Metal Dichalcogenides ◽  
Optoelectronic Devices ◽  
Single Layer ◽  
Semiconductor Nanostructures ◽  
Phonon Coupling ◽  
Layer Transition ◽  
Fundamental Physics ◽  
Metal Dichalcogenides

Abstract Single-layer transition metal dichalcogenides (1L-TMDs) are at the center of an ever increasing research effort both in terms of fundamental physics and applications. Exciton–phonon coupling (EXPC) plays a key role in determining the photonic and (opto)electronic properties of 1L-TMDs. However, the EXPC strength has not been measured at room temperature. Here, we develop two-dimensional (2D) micro-spectroscopy to determine EXPC of 1L-MoSe2. We detect beating signals as a function of waiting time T, induced by the coupling between the A exciton and the A'1 optical phonon. Analysis of 2D beating maps provides the EXPC with the help of simulations. The Huang–Rhys factor of ~1 is larger than in most other inorganic semiconductor nanostructures. Our technique offers a unique tool to measure EXPC also in other 1L-TMDs and heterogeneous semiconducting systems with a spatial resolution ~260 nm, and will provide design-relevant parameters for the development of novel optoelectronic devices.

Solvent Contamination Determined by UV Reflection

1985 ◽  
Vol 28 (5) ◽  
pp. 23-26
Author(s):  
Edward Murphy
Keyword(s):  
Room Temperature ◽  
Ultraviolet Absorption ◽  
Simple Test ◽  
Reflection Spectroscopy ◽  
Cleaning Solvents ◽  
Uv Reflection

Commercial organic cleaning solvents, unless specially prepared, may increase contamination of an item rather than clean it. A simple test to determine the presence or absence of a contaminant in a solvent can be performed by using ultraviolet-reflection spectroscopy. The procedure consists of immersing a quartz-paper coupon in a small quantity of the solvent to be tested, then evaporating the solution to dryness in a vent hood at room temperature. Prior to immersion, clean quartz paper typically reflects 70 to 90% of the ultraviolet in a range from 200 to 360 nm. If the filaments of the quartz-paper coupon have had any contaminant from the solvent deposited on their surfaces, the multi reflections produce an extensive ultraviolet absorption.

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