A5072737444- Solid State Laser Technologies
- Glass properties and applications
- Luminescence Properties of Advanced Materials
- Advanced Fiber Laser Technologies
- Photonic Crystal and Fiber Optics
- Photorefractive and Nonlinear Optics
- Laser Design and Applications
- Laser Material Processing Techniques
- Phase-change materials and chalcogenides
- Advanced Fiber Optic Sensors
- Semiconductor Lasers and Optical Devices
- Laser-Matter Interactions and Applications
- Optical and Acousto-Optic Technologies
- Photonic and Optical Devices
- Surface Roughness and Optical Measurements
- Ocular and Laser Science Research
- Quantum optics and atomic interactions
- Mineralogy and Gemology Studies
- Optical Network Technologies
- Random lasers and scattering media
- Photonic Crystals and Applications
- Magneto-Optical Properties and Applications
- Pigment Synthesis and Properties
- Material Science and Thermodynamics
- Inorganic Fluorides and Related Compounds
Prokhorov General Physics Institute
2015-2024
Russian Academy of Sciences
2000-2021
Institute of Laser Physics
2018
Vavilov Institute of General Genetics
1989-2006
Institute of Gene Biology
2004
Institute on Laser and Information Technologies
2001
KTH Royal Institute of Technology
2000
Sechenov University
1993
P.N. Lebedev Physical Institute of the Russian Academy of Sciences
1969-1983
Fluorescence and site-selective excitation spectra of chromium-activated forsterite at 10 K are reported. It is found that a high-field ${\mathrm{Cr}}^{3+}$ site in inversion symmetry emits sharp ${\mathit{R}}_{1}$ line fluorescence, while low field mirror produces $^{4}$${\mathit{T}}_{2}$ broadband emission. The dominant absorption the visible shown to be $^{3}$${\mathit{A}}_{2}$${\ensuremath{\rightarrow}}^{3}$${\mathit{T}}_{1}$${(}^{3}$F) transitions ${\mathrm{Cr}}^{4+}$ tetrahedral sites....
Efficient room temperature mid-infrared laser action in a Ce
We present a composite optical fiber with Er/Yb co-doped phosphate-glass core in silica glass cladding as well pumped laser. The fabrication process, properties, and lasing parameters are described. slope efficiency under 980 nm pumping reached 39% respect to the absorbed pump power 28% coupled power. Due high doping level of phosphate optimal length was several times shorter than that fibers.
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.
We report on passively Q-switched operation of a diode-pumped Er–Yb:glass laser with Co2+:MgAl2O4 plate as saturable absorber. Optical pulses peak power exceeding 2 kW and pulse length 2.3 ns have been generated. Single-longitudinal-mode at 1.53 µm has obtained by use the an intracavity etalon. A discussion optimal Er3+ concentration well optimization cavity design is included.
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>...
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...
Abstract Specially designed composite heavily Er 3+ -doped fiber in combination with unique point-by-point inscription technology by femtosecond pulses at 1,026 nm enables formation of distributed-feedback (DFB) laser ultra-short cavity length 5.3 mm whose parameters are comparable and even better than those for conventional DFB lasers having much longer cavity. The was fabricated melting rare-earth doped phosphate glass silica tube. generates single-polarization single-frequency radiation...
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.