We warmly congratulate Viktor Ivanovich Balykin, Head of the Laser Spectroscopy Laboratory at ISAN, on receiving the ICO Galileo Galilei Medal Award. On September 20, 2021, the Bureau of the International Commission for Optics (ICO) approved the award of the Galileo Galilei Medal 2021 to Viktor I. Balykin in recognition…
This summer, young researchers from the Laboratatory of Laser Spectroscopy ISAN participated in a summer internship in the southern capital of China – Nanjing. Scientific groups from ISAN and Nanjing University collaborate through the International Laboratory of Nanoplasmonics and its Applications in Biology and Medicine, established at ISAN under the…
We discuss advanced optical and nanophotonic techniques for detecting single biomolecules with extremely high sensitivity, down to single-molecule levels. We describe and show how modern optical methods — including fluorescence imaging, plasmonics, and nanostructure-enhanced sensing — can be used to visualize single molecules, detect ultra-low analyte concentrations directly in complex…
We congratulate Anton Gritchenko, a Junior Researcher at the Laboratory of Laser Spectroscopy, on winning the competition for individual research projects by young scientists with the project titled: “Spatial and Temporal Localization of Quantum Emitters in Nanoscale Resonators for Applications in Detection, Microscopy, and Spectroscopy.” The program provides funding for…
Surface Plasmon Photonics (SPP) is an international conference widely regarded as one of the leading events in the field of plasmonics. It is held every two years in different locations around the world; this year the conference took place in Tokyo, Japan. The conference covers a broad range of topics…
On February 7, 2025, on the eve of Russian Science Day, the first ceremony of presenting the “Person of Science” award from the Office of the Council of Deputies of the Troitsk Urban District in Moscow, a science city of the Russian Federation, was held at the Glinka Children’s Art…
We reports the development of a miniaturized optoelectronic component in which a gallium phosphide (GaP) nanowire (NW) serves simultaneously as an optical waveguide and an electrically-driven light source. By doping the GaP nanowire differently — either with Be (p-type) or Si (n-type) — we demonstrate integrated visible-range electroluminescence within a…
We investigate how strong light–matter interactions can be used to engineer the radiative (light emission) properties of complex nanoscale systems composed of fluorescent dye molecules embedded in a polydopamine matrix and coupled to metallic nanoparticles. Polydopamine is a common biocompatible adhesive material, but it typically quenches fluorescence of embedded dyes…
In 2024, the Russian Academy of Sciences celebrates its 300th anniversary since its founding. Victor Balykin, head of the spectroscopy laboratory at the Institute of the Russian Academy of Sciences, were honored with this special award in conjunction with the 300-year anniversary celebrations.This medal was awarded to the outstanding scientists…
We present the design and experimental demonstration of a single-layer atom chip with an additional wide U-shaped microwire to improve the loading of cold atoms into a magneto-optical trap (MOT). The optimized magnetic-field distribution created by the wide wire increases the trapping volume near the chip while keeping the device…
The paper presents a novel optical microscopy method for directly detecting infectious SARS-CoV-2 viral particles in clinical samples by counting spike proteins on individual virions. Traditional virus detection techniques often measure viral genomes or specific proteins but cannot differentiate between infectious particles and non-infectious debris. We address this limitation by…
The article studies the possibility of creating a compact magneto-optical trap (MOT) for ytterbium atoms by combining an atom chip with a planar diffraction grating. Such a system can simplify traditional laser-cooling setups, which normally require multiple laser beams and large magnetic coils. We experimentally determine the optimal parameters of…
The paper proposes a method for measuring gravitational acceleration using ultracold atoms in an atomic fountain. The technique relies on detecting shifts in Ramsey interference fringes that occur when atoms interact twice with a microwave field during their ballistic motion in the gravitational field. Because the time of flight of…
This paper investigate how to efficiently focus a cold atomic beam near an atom chip using a two-dimensional magneto-optical trap (2D MOT). We analyze two regimes of atom–laser interaction: Doppler cooling and sub-Doppler cooling. We show that in the Doppler regime momentum diffusion causes strong heating, so the focusing effect…
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…
Congratulations to Daria Bykova on being awarded the Presidential Grant! The presidential scholarship is granted to talented young researchers who are tasked with addressing large-scale challenges, that involves creating technologies and products. For this purpose, the scholars possess the most important qualities—talent, knowledge, boldness—and receive support from mentors and the…
