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Ultra-fast single troponine-T molecule sensing
Ch. 8872744. P. 1-1.
P. Melentiev, Son L., Kudryavtsev D., A. Afanasiev, Kasheverov I., Tsetlin V., V. Balykin
The detection of ultra-low concentration at the level of single molecules has practical importance with regard to the detection of clinically relevant biomarkers in blood serum. The early detection of several diseases, including coronary artery disease, demands detection of corresponding biomolecules at a single-molecule-level.
Berman O., Kezerashvili R., Lozovik Y., Physical Review B: Condensed Matter and Materials Physics 2013 Vol. 88 No. 23 P. 235424
A novel type of spaser with the net amplification of surface plasmons (SPs) in a doped graphene nanoribbon is proposed. The plasmons in the THz region can be generated in a doped graphene nanoribbon due to nonradiative excitation by emitters like two level quantum dots located along a graphene nanoribbon. The minimal population inversion per ...
Added: January 13, 2014
Andrianov E. S., Zyablovsky A. A., Dorofeenko A. V. et al., Physical Review B: Condensed Matter and Materials Physics 2018 Vol. 98 No. 07-5411 P. 075411-1-075411-8
Plasmon spectroscopy methods are highly sensitive to the small volumes of material due to subwavelength localization of light increasing light-matter interaction. Recent research has shown a high potential of plasmon quantum generator (spaser) or amplifier (sped) for sensing in the infrared optical region. Trinitrotoluene (TNT) molecules fingerprints are considered as an example. Basing on Lindblad ...
Added: October 22, 2018
Нечепуренко И. А., Дорофеенко А. В., Ю.Е. Лозовик, Журнал радиоэлектроники 2015 № 12 С. 1-17
В данной работе рассмотрен поверхностный плазмон-поляритонный лазер (спазер), который генерирует поверхностные плазмоны в графеновой чешуйке. Произведен пересмотр основных лазерных уравнений для описания спазера с учетом дисперсии материальных параметров. Выполнен последовательный вывод уравнений динамики спазера, начиная с уравнений Максвелла-Блоха. Получены уравнения динамики спазера в одномодовом приближении и скоростные уравнения. Найдены выражения для параметров уравнений через физические ...
Added: October 18, 2016
Yu.E. Lozovik, Nechepurenko I. A., Dorofeenko A. V. et al., Laser Physics Letters 2014 Vol. 11 P. 125701
A novel method is proposed for highly sensitive surface spectroscopy based on hole burning in the surface plasmon polariton (SPP) quantum generator spectrum due to absorption by analyzed molecules or clusters located inside the SPP cavity. The SPP quantum generator spectrum is calculated with an account of inhomogeneous broadening due to variations of the active ...
Added: October 17, 2016
Parfenyev Vladimir M., Vergeles Sergey S., Optics Express 2014 Vol. 22 No. 11 P. 13671-13679
We present a quantum theory of a spaser-based nanolaser, under the bad-cavity approximation. We find first- and second-order correlation functions g(1)(t) and g(2)(t) below and above the generation threshold, and obtain the average number of plasmons in the cavity. The latter is shown to be of the order of unity near the generation threshold, where ...
Added: October 31, 2017
Wang J., Gao Z., Melentiev P. N., Journal of Physical Chemistry C 2020 Vol. 124 No. 30 P. 16553-16560
Spaser nanoparticles, with ultranarrow spectral line width, small size and good biocompatibility, offer a bright prospect as potential biological probes. Sadly, over 10 years since the first demonstration, how the structure components determine their optical performance has not been clarified. Here the effects of gain layer thickness and dye emitter density on the lasing behavior ...
Added: January 16, 2021
Lozovik Y., Nechepurenko I. A., Andrianov E. S. et al., Physical Review B: Condensed Matter and Materials Physics 2016 Vol. 94 No. July P. 035406
The development of active and passive plasmonic devices is challenging due to the high level of dissipation in normal metals. One possible solution to this problem is using alternative materials. Graphene is a good candidate for plasmonics in the near-infrared region. In this paper, we develop a quantum theory of a graphene plasmon generator. We account for quantum correlations ...
Added: September 14, 2016
Yu.E. Lozovik, Nechepurenko I. A., Dorofeenko A. V., Photonics and Nanostructures - Fundamentals and Applications 2016 Vol. 21 P. 60-66
We propose an intracavity plasmon absorption spectroscopy method based on graphene active plasmonics. It is shown that the plasmonic cavity contribution to the sensitivity is proportional to the quality factor Q of the graphene plasmonic cavity and reaches two orders of magnitude. The addition of gain medium into the cavity increases the sensitivity of method. ...
Added: October 18, 2016
Parfenyev V.M., Vergeles S.S., Physical Review A: Atomic, Molecular, and Optical physics 2012 Vol. 86 No. 4 P. 043824
The operation of a surface plasmon amplification by stimulated emission of radiation- (spaser)-based nanolaser is theoretically investigated. We find that the lasing frequency undergoes a shift as the lasing intensity increases, a result that agrees with recent experiments. We show that the mechanism of the intensity-dependent shift involves a spatial deformation of the lasing mode, ...
Added: October 31, 2017
P. Melentiev, A. Kalmykov, A. Gritchenko et al., Applied Physics Letters 2017 Vol. 111 P. 213104
We demonstrate intracavity plasmonic laser spectroscopy using a plasmonic laser created from a periodically perforated silver film with a liquid gain medium. An active zone of the laser is formed by a highly elongated spot of pumping. This results in a significantly more efficient diffusive mixing of dye molecules, which suppresses the effect of their ...
Added: November 27, 2019
P. Melentiev, A. Kalmykov, A. Gritchenko et al., , in : 2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC). : IEEE, 2019. Ch. 8872758.
In laser physics, intracavity laser spectroscopy methods are known to have an extremely high sensitivity [1]. In these methods, an analyte being detected that absorbs at the lasing wavelength is placed in the laser cavity. The analyte is then detected by changing the lasing parameters, such as the threshold, intensity, and wavelength, resulting in the ...
Added: December 4, 2019
Lozovik Y., Nechepurenko I., Dorofeenko A. et al., Physics Letters A 2014 Vol. 378 No. 9 P. 723-727
We propose a method for high-sensitivity subwavelength spectromicroscopy based on the usage of a spaser (plasmonic nanolaser) in the form of a scanning probe microscope tip. The high spatial resolution is defined by plasmon localization at the tip, as is the case for apertureless scanning near-field optical microscopy. In contrast to the latter method, we ...
Added: January 13, 2014