A5090154452- Advanced Fiber Laser Technologies
- Solid State Laser Technologies
- Photonic Crystal and Fiber Optics
- Laser-Matter Interactions and Applications
- Laser Design and Applications
- Optical Network Technologies
- Glass properties and applications
- Advanced Fiber Optic Sensors
- Phase-change materials and chalcogenides
- Spectroscopy and Laser Applications
- Photorefractive and Nonlinear Optics
- Photonic and Optical Devices
- Nonlinear Optical Materials Studies
- Oil Spill Detection and Mitigation
- Mechanical and Optical Resonators
- Atmospheric and Environmental Gas Dynamics
- Photodynamic Therapy Research Studies
- Optical Coherence Tomography Applications
- Marine and coastal ecosystems
- Terahertz technology and applications
- Vietnamese History and Culture Studies
- Laser Material Processing Techniques
- Oceanographic and Atmospheric Processes
- Chalcogenide Semiconductor Thin Films
- Cancer Treatment and Pharmacology
P.N. Lebedev Physical Institute of the Russian Academy of Sciences
2019-2024
Bauman Moscow State Technical University
2012-2022
Russian Academy of Sciences
2010-2021
University of Duisburg-Essen
2021
St.Tikhon's Orthodox University
2014
We demonstrate an intracavity absorption spectroscopy system based on a broadband single-crystal pulsed Fe:ZnSe laser. The laser operates at room-temperature and is continuously tunable in the spectral range of 3.76–5.29 µm. long-wavelength emission up to 5.29 µm record achievement for lasers, best our knowledge. developed applied measurements gaseous inside resonator. sensitive detection (i) CO 2 isotopes atmosphere human breath, (ii) breath (after cigarette smoking) smoke smoldering paper,...
Efficient room temperature mid-infrared laser action in a Ce
Abstract Energy, spectral and temporal characteristics of a Ce 3+ -doped chalcogenide glass fiber laser continuously pumped by 4.16 μ m Fe 2+ :ZnSe were investigated. Milliwatt level output power was obtained. In case low Q-factor the resonator operated at λ = 4.62 corresponding to narrow peak in emission spectrum. At higher Q-factor, lasing wavelength changed 5.0–5.1 plateau gain contrast Tb mid-infrared lasers, had no tendency non-relaxing spike operation.
Efficient lasing of Ga-rich BGG bulk glasses doped with Tm 3+ is demonstrated. Two samples ion concentrations 1.27×10 20 cm −3 and 2.54×10 were tested for their laser performance. In-band pumping was realized using a continuous-wave (CW) homemade Er-doped fiber at 1600 nm. A maximum slope efficiency 27.7% demonstrated respect to the absorbed pump power. The emission cross-section retrieved from data three different wavelengths compared theoretical calculations. power scaling potential :BGG...
We report for the first time to best of our knowledge on ultra-short pulse (USP) generation in dispersion-managed erbium-doped all-fiber ring laser hybridly mode-locked with boron nitride-doped single-walled carbon nanotubes co-action a nonlinear polarization evolution cavity distributed polarizer. Stable 92.6 fs dechirped pulses were obtained via precise state adjustment at central wavelength 1560 nm 11.2 mW average output power, corresponding 2.9 kW maximum peak power. have also observed...
We report a laser operation from Fe:CdTe single crystal, pumped by 40-ns pulses of 4.12-µm Fe:ZnSe laser. The maximum output energy 5.8 mJ was produced at 5.4 µm with 30% absorbed slope efficiency. A record 2300-nm-wide smooth and continuous wavelength tunability over 4.5-6.8 range demonstrated, being the longest tuning achieved for Fe2+-doped chalcogenide lasers. also discuss features oscillation spectra.
In high purity <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:msup> <mml:mi mathvariant="normal">C</mml:mi> mathvariant="normal">e</mml:mi> </mml:mrow> <mml:mn>3</mml:mn> <mml:mo>+</mml:mo> </mml:msup> </mml:math> -doped selenide glass pumped by a 4.08 µm Fe:ZnSe laser, 5.1–5.5 laser oscillations were observed. This is the first evidence of action corresponding to <mml:mi/> <mml:mn>2</mml:mn> <mml:msub>...
We report on a comprehensive characterization of Cr 2+ -doped CdSe single crystal as an efficient active material for tunable laser applications in the mid-infrared spectral region.Optical gain, thermo-optical behavior, power efficiency, scalability and wavelength tunability have been thoroughly investigated.Using antireflection-coated pumped by Tmfiber at 1.94 μm, 1-W CW output 50% slope efficiency 2.65 μm emission obtained diffraction-limited beam.An peak 2.5 W has achieved without...
We report on efficient supercontinuum generation in tapered suspended-core <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:msub> <mml:mi mathvariant="normal">A</mml:mi> mathvariant="normal">s</mml:mi> </mml:mrow> <mml:mn>39</mml:mn> </mml:msub> mathvariant="normal">S</mml:mi> mathvariant="normal">e</mml:mi> <mml:mn>61</mml:mn> </mml:math> fibers pumped by a femtosecond mode-locked Cr:ZnSe laser. The spectrum spans the...
An extensive study of a novel room-temperature mid-infrared Ce 3+ -doped Ge 20 Sb 10 Ga 5 Se 65 glass laser is reported. influence output-coupler transmission on efficiency and emission spectra investigated. Pumped by pulsed Fe:ZnSe at 4.1 µm, maximum output energy 35 mJ demonstrated 5.2 with threshold about 60 slope 21%. The tuning range Ce:glass reported for the first time: an intracavity prism, continuously tunable in spectral 4.5–5.6 µm. internal losses are determined to be below 9% per...
We report on ultra-short stretched pulse generation in an all-fiber erbium-doped ring laser with a highly-nonlinear germanosilicate fiber inside the resonator slightly positive net-cavity group velocity dispersion (GVD). Stable 84 fs pulses were obtained 12 MHz repetition rate at central wavelength of 1560 nm 48.1 spectral width (full half maximum, FWHM) and 30 mW average output power; this corresponds to 29.7 kW maximum peak power 2.5 nJ energy immediately from oscillator.
Ultrashort pulse lasers constitute an important tool in the emerging field of optical frequency metrology and are enabling unprecedented measurement capabilities new applications a wide range fields, including precision spectroscopy, atomic clocks, ultracold gases, molecular fingerprinting. We demonstrate generation stable 127-fs self-similar pulses at central wavelength 1560 nm with 7.14-mW average output power. Similariton have low repetition rate deviation averaging time interval...
The influence of rare earth dopant concentration on selenide laser glass quality was investigated. A problem to be solved identified – an increase in doping level leads optical losses due light scattering by heterogeneous inclusions and the decrease damage threshold. room temperature system consisting 4.6 μ m pulsed Fe:ZnSe pump Ce 3+ :Ge 20 Sb 10 Ga 5 Se 65 bulk demonstrated. slope efficiency :glass with respect absorbed energy reached 25% a maximum output 45 mJ.
We report on a gain-switched operation of single-crystal Fe2+:ZnSe pumped by coupled-cavity Q-switched Er3+:ZrF4 fiber laser. With this approach, we use continuous wave Er-doped ZrF4 laser whose cavity is coupled with the Fe:ZnSe cavity. A stable Q switching was achieved in case and, as result, obtained. The highest repetition rate 79 kHz, pulse duration pump ∼1.6 μs, and 62 ns. maximum output power from 63 mW.
In this Letter, we demonstrate a single-stage erbium-doped fluoride fiber amplifier composed of two spliced large core fibers with respective diameters 85 and 130 µm. An optical parametric generator (OPG) operating at 5 kHz repetition rate, providing ∼2 ns pulse duration, an average output power 500 mW wavelength 2.8 µm was used as seed source. This nanosecond configuration achieved 10 W record energy 2 mJ, corresponding to 1 MW peak power. The maximum slope efficiency hybrid is 21% respect...
We demonstrate new experimental results for visible supercontinuum generation in large-core photonic crystal fiber with high air-filling fraction. Supercontinuum is generated by picosecond pulses from a passively mode-locked Yb:KGW laser. A smooth near 800 nm achieved using 4.5 m long even 6 mW average coupled power. These are of interest power white light sources and have potential applications precise frequency metrology spectroscopy. The data obtained could be used also theoretical...
High-energy laser operation of a <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:msup> <mml:mi mathvariant="normal">F</mml:mi> mathvariant="normal">e</mml:mi> </mml:mrow> <mml:mn>2</mml:mn> <mml:mo>+</mml:mo> </mml:msup> </mml:math> -doped single-crystal CdTe is demonstrated at the temperature 77 K. Pumped with 250 µs pulses 4.08 µm Fe:ZnSe laser, Fe:CdTe produced record output 0.35 J, slope efficiency 44%. A further...
We present experimental results of birefringence property measurements for two types negative curvature anti-resonant hollow-core fibers (AR-HCFs). Both AR-HCFs have a core 50 µm in diameter, providing an effective area the fundamental guided mode larger than 1000µm2. Measurements were carried out at wavelengths 2.25, 2.35, and 2.45 µm. The obtained demonstrate that both fiber axes do not correspond to symmetry axes. proposed technique orientation measurement could be applied other kinds...
Regimes of ultrashort pulse generation in an erbium-doped all-fibre ring laser with hybrid mode locking based on single-wall carbon – boron nitride nanotubes and the nonlinear Kerr effect fibre waveguides are studied. Stable dechirped pulses obtained a duration , repetition rate average output power which corresponds to energy peak .
We demonstrate the first application of a Cr:CdSe laser for highly-sensitive multicomponent intracavity absorption spectroscopy around λ = 3.1-3.4 µm. A detection scheme based on an integrated recording multiple (∼70) individual pulses after single pump-pulse excitation is reported. The sensitivity our system corresponds to effective path length Leff ≈ 850 m. Exemplary measurements atmospheric H2O and CH4, additionally introduced gas-phase HCl, C2H4, or C2H6 are presented. achieved...
The first, to the best of our knowledge, mid-infrared Q-switched Ce3+-doped glass laser is demonstrated. As saturable absorbers, Fe2+:CdSe and Fe2+:CdTe are used for first time. When by Fe:CdSe, operates in a multi-pulse regime with an individual pulse width 110 ns, centered at λ = 5.20 µm. With Fe:CdTe as absorber, 1-3 giant pulses 30 ns generated 5.13