Junior researcher Anton Gritchenko of the Laser Spectroscopy Department successfully defended his PhD thesis on “Nanolocalized Radiation Sources Based on Plasmonic and Quantum-Sized Nanostructures“. His supervisor was Pavel Melentiev, PhD in Optics and a leading researcher at the Institute of Spectroscopy RAS. On June 20, 2023, V.N. Zadkov, Director of…
Leading researcher at the Laser Spectroscopy Department, PhD in optics Pavel Melentiev, successfully defended his doctoral dissertation on “Plasmonic Optics and Its Applications: Light Localization, Quantum and Nonlinear Effects, Sensorics.” On June 20, 2023, V.N. Zadkov, Director of the Institute of Spectroscopy of the Russian Academy of Sciences, and V.E….
The RSF supported the projects of ISAN researchers in the competition of small scientific groups. According to the results of the 2022 competition for grants from the Russian Science Foundation for priority area of activity of the Russian Science Foundation “Conducting fundamental scientific research and exploratory scientific research by small…
Based on the results of the 2022 competition for grants from the Russian Science Foundation (RSF) in the priority area of the RSF activity “Conducting fundamental scientific research and exploratory scientific research by international research teams” (jointly with the National Natural Science Foundation of China (NSFC)) the project “«Ultra-bright and…
We have proposed, implemented and investigated a novel, efficient quantum emitter based on an atomic-sized Ag nanocluster in a plasmonic resonator. The quantum emitter enables the realization of: (1) ultra-bright fluorescence, (2) narrow-band emission down to 4 nm, (3) ultra-short fluorescence lifetime. The fluorescence cross-section of a quantum emitter is…
We study a method to improve the loading efficiency of atoms into a magneto-optical trap located near an atom chip. We propose focusing a slow atomic beam using a two-dimensional magneto-optical trap (2D MOT) placed between a low-velocity intense source and the chip. This focusing compresses the atomic beam into…
We report the design, fabrication, and experimental evaluation of a single-layer atom chip capable of continuous operation for laser cooling and trapping of neutral atoms. Traditional atom chips often use multilayer structures and operate in pulsed modes due to heat buildup from current-carrying wires. In this work, we optimized the…
We investigate how strong optical coupling between Cy7.5 dye molecules and gold (Au) nanorod plasmonic nanoparticles can influence the photobleaching (photodegradation) behavior of the dye. In typical conditions, dye molecules degrade when exposed to light due to transitions to reactive triplet states. However, when the dye molecules are strongly coupled…
We propose a new optical sensing method that enables real-time, ultra-fast, and extremely sensitive detection and imaging of single cardiac troponin-T (cTnT) molecules in complex biological samples like human blood serum. By combining an expanded laser excitation spot with fluorescent labeling strategies optimized for high photon collection, we overcome the…
We report the development and experimental demonstration of a femtosecond pulsed optical dipole trap for neutral atoms (rubidium) in which spectral filtering of the broadband laser light is used to significantly increase atom trapping lifetime. This spectral filtering removes near-resonant frequency components, reducing atom heating and allowing atoms to remain…