A5083841803- Advanced Fiber Laser Technologies
- Laser-Matter Interactions and Applications
- Photonic and Optical Devices
- Quantum optics and atomic interactions
- Laser Design and Applications
- Solid State Laser Technologies
- Semiconductor Lasers and Optical Devices
- Spectroscopy Techniques in Biomedical and Chemical Research
- Quantum Information and Cryptography
- Ocular and Laser Science Research
- Photorefractive and Nonlinear Optics
- Spectroscopy and Quantum Chemical Studies
- Mechanical and Optical Resonators
- Heart Rate Variability and Autonomic Control
- Blood Pressure and Hypertension Studies
- Quantum Mechanics and Applications
- Cardiovascular Health and Disease Prevention
- Orbital Angular Momentum in Optics
- Advanced Optical Sensing Technologies
- Photochemistry and Electron Transfer Studies
- Fusion and Plasma Physics Studies
- Pancreatitis Pathology and Treatment
- Spectroscopy and Laser Applications
- Optical Coherence Tomography Applications
- Laser-Plasma Interactions and Diagnostics
Russian Quantum Center
2017-2024
Semey Medical University
2024
P.N. Lebedev Physical Institute of the Russian Academy of Sciences
2014-2023
Moscow Engineering Physics Institute
2017-2023
Russian Academy of Sciences
1994-2022
University of Sussex
1982
Diode laser self-injection locking (SIL) to a whispering gallery mode of high quality factor resonator is widely used method for linewidth narrowing and high-frequency noise suppression. SIL has already been the demonstration ultra-low-noise photonic microwave oscillators soliton microcomb generation wide range possible applications. Up date, was demonstrated only with single laser. However, multi-frequency narrow-linewidth sources are in demand modern telecommunication systems, quantum...
Waveguides on a chip represent new medium for implementing nonlinear optical transformations of light. The capabilities waveguides generating sub-Poissonian light in the form displaced Kerr state are analyzed. We offer analytical formulas estimating ultimate suppressing photon fluctuations any value input amplitude. results numerical calculations presented. It is shown that degree noise suppression can reach values 5 - 15 dB with 100 mW power few meters long.
Self-injection locking of a diode laser to high-quality-factor microresonator is widely used for frequency stabilization and linewidth narrowing. We constructed several microresonator-based sources with measured instantaneous linewidths 1 Hz them investigation implementation the self-injection effect. studied analytically experimentally dependence coefficient on tunable parameters such as phase coupling rate. It was shown that precise control allows fine-tuning generated from stabilized...
We present a thorough theoretical analysis and experimental study of the shot electronic noise spectra balanced optical detector based on an operational amplifier connected in transimpedance scheme. identify quantify primary parameters responsible for limitations circuit, particular, bandwidth shot-to-electronic clearance. find that spectrum can be made consistent with second-order Butterworth filter, while grows linearly second power frequency. Good agreement between theory experiment is...
By the computer calculations of quasiprobability distribution authors have shown that in a process second-harmonic generation at phase matching conditions quantum state fundamental mode evolves into superposition two macroscopically distinguishable states. Creation destroys squeezing formed initial stage evolution mode.
The pumping efficiency of the higher-order modes an optical nanofiber by fluorescence excited in atoms laser light is analyzed. mode excitation examined for three TE01, TM01 and HE21 compared with fundamental fiber HE11. It shown that rates are generally 5–10 times higher than mode. concluded nanofibers pumped can play role interfaces allowing one to transfer electromagnetic energy stored optically into propagating inside fibers.
Abstract Photocurrent shot-noise suppression is observed in closed optoelectronic loop below the limit (1 − η) of standard level (SNL) imposed by conventional theory photodetector with quantum efficiency η. Experimental results on photocurrent noise are presented for different values feedback strength and η in-loop photodiode. It shown that at fixed factor does not depend Minimum spectral density SNL a 17·8 (− 12·5 dB). Such large cannot be explained terms an ordinary sub-Poissonian light...
Quantum interference of polarization states light radiation is investigated using a Wigner-type (W) quasiprobability function. Two examples states, having the form macroscopically distinguishable superposition either coherent or Fock with alternatively excited modes, are considered. Interference phenomena shown to be connected specific entanglement quantum (due their ‘mirror-like’ forms) and characterized by universal ‘four-photon’ periodicity parameter. These effects well exhibited via...
We have performed a comparative analysis of the characteristics laser resonators fabricated from various materials. The greatest attention is paid to problem Brownian noise leading fluctuations in resonator length and limitation frequency stability actively stabilised by transmission peak high-Q Fabry–Perot resonator. A possibility designing new-generation ultrastable systems based on cryogenic crystalline shown.
Amplitude and phase responses of bleachable dyes are experimentally investigated using a picosecond pump probe pulse technique combined with light polarization measurements. In the measurements, amplitude response appears in form dichroism bleaching, induced birefringence. The method measurement is adapted for fast relaxation excited state; these used mode locking ultrashort lasers. Experimental results contribution mutual time presented some polymethine dyes.