Prokhorov General Physics Institute

Generation and power amplification of 1.4-μm ultra-broadband noise-like pulses using a bismuth-doped germanosilicate fiber laser and amplifier

The 1.4–1.5 μm spectral region is attractive for water‑absorption‑related photonic applications and E- and S-band optical communication systems, but suitable silica-compatible gain media remain limited. We developed a single-mode, low-germanium bismuth-doped germanosilicate fiber...

Radiative recombination of near-surface donor–acceptor pairs in hydrogenated homoepitaxial diamond nanolayers

Hydrogen-terminated diamond is known for its p-type surface conductivity, which arises from a near-surface hole accumulation layer induced by adsorbed acceptor species. Here, we demonstrate that these surface acceptors also form optically active donor–acceptor pairs (DAPs) with s...

Colossal Magnetoresistance and Heavy Fermions in Eu0.9Yb0.1B6 System

Current work presents the study of transport characteristics [resistivity, transverse magnetoresistance (TMR), Hall effect] of a high-quality polycrystalline sample of Eu0.9Yb0.1B6 compound in the temperature range of 2–300 K, in magnetic fields up to 8 T. The obtained data confi...

Single‐Photon Emitters Based on Ge‐V Centers in Nanoparticles Obtained From CVD‐Grown Nanocrystalline Diamond Films

A method for obtaining luminescent diamond nanoparticles doped with germanium from nanocrystalline diamond (NCD) films grown by microwave plasma‐assisted chemical vapor deposition (MPCVD) is presented. Thermal etching in the presence of an alkali metal nitrate enables the selecti...

Domain switching by femtosecond NIR laser irradiation in bulk of single-domain and polydomain SBN single crystals

We have studied features of the domain patterns formed under the action of femtosecond near-infrared laser irradiation in the bulk of strontium barium niobate Sr 0.61 Ba 0.39 Nb 2 O 6 single crystalline Z-cut plates in single-domain and polydomain states. The polydomain state rep...

Evaluation of smoke mass concentration within the PBL based on observations of fluorescence lidar with several discreet channels

Abstract. Elevated concentrations of smoke within the planetary boundary layer (PBL) represent a significant health hazard, making its monitoring essential. This study demonstrates that a multi-channel fluorescence lidar can effectively analyze smoke–urban aerosol mixtures and re...