A. M. Malyarevich

article

Optical properties of transparent cobalt-containing magnesium aluminosilicate glass-ceramics doped with gallium oxide for saturable absorbers

P. A. Loiko, N. A. Skoptsov, O. S. Dymshits, A. M. Malyarevich, more

Optics and Spectroscopy > 2016 > 121 > 4 > 497-502

Transparent glass-ceramic materials based on glasses of the MgO–Al₂O₃–SiO₂–TiO₂ system doped with CoO and Ga₂O₃ are synthesized. The secondary heat treatment of the initial glasses at temperatures of 800–950°C leads to precipitation of nanosized (6–7 nm) crystals of magnesium aluminogallium spinel doped with cobalt ions and magnesium aluminotitanate solid solutions. The optical absorption spectra...

chapter

Novel transparent glass-ceramics based on Co:Li(Al, Ga)₅O₈ nanocrystals for passive Q-switching of Er lasers

O. S. Dymshits, A. A. Zhilin, I. P. Alekseeva, M. Ya. Tsenter, more

2016 International Conference Laser Optics (LO) > R9-24

2016 International Conference Laser Optics (LO)

Transparent glass-ceramics of the lithium gallium aluminosilicate system based on cobalt-doped Li(Al, Ga)₅O₈ spinel nanosized crystals were developed. Their structure and optical properties were evaluated. Passive Q-switching of an Er, Yb:glass laser with 1 mJ/45 ns pulses at ∼1.54 μm is realized.

chapter

Glass-ceramics with Co²⁺:ZnO nanocrystals: Novel saturatable absorber for Er lasers

O. S. Dymshits, N. A. Skoptsov, V. V. Vitkin, A. A. Zhilin, more

2016 International Conference Laser Optics (LO) > R1-6

2016 International Conference Laser Optics (LO)

Transparent glass-ceramics based on Co²⁺:ZnO nanocrystals are synthesized in cobalt-doped glasses of the K₂O-ZnO-Al₂O₃-SiO₂ system. Passive Q-switching of an Er, Yb:glass laser with 0.37 mJ/100 ns pulses at ∼1.54 μm is realized.

chapter

Synthesis, structure and Q-switching behaviour of transparent glass-ceramics based on a mixture of Co:β-Zn₂SiO₄ and Co:ZnO nanocrystals

O. S. Dymshits, P. A. Loiko, N. A. Skoptsov, A. A. Zhilin, more

2016 International Conference Laser Optics (LO) > R1-58

2016 International Conference Laser Optics (LO)

We report on synthesis, structure, optical spectroscopy, nonlinear properties and passive Q-switching performance of novel transparent potassium zinc aluminosilicate glass-ceramics containing a mixture of cobalt-doped β-willemite, Co:Zn₂SiO₄ and zinc oxide, Co:ZnO.

article

Luminescence of transparent glass ceramics containing Er³⁺ and Yb³⁺ zirconate-titanate nanocrystals

N. A. Skoptsov, I. A. Denisov, A. M. Malyarevich, K. V. Yumashev, more

Journal of Applied Spectroscopy > 2011 > 78 > 5 > 650-658

Luminescence regularities have been studied in new erbium/ytterbium materials based on glasses and glass ceramics of a magnesium-aluminosilicate system containing nanoscale erbium/ytterbium zirconate titanate crystals with the pyrochlore structure. Lifetimes of Yb³⁺ and Er³⁺ ions in the ² F_5/2 state and in the ⁴I_11/2 and ⁴I_13/2 states, respectively, and the efficiency of Yb³⁺ → Er³⁺ energy transfer...

article

Saturable absorbers based on tetrahedrally coordinated transition-metal ions in crystals (Review)

A. M. Malyarevich, K. V. Yumashev

Journal of Applied Spectroscopy > 2009 > 76 > 1 > 1-43

Published data on spectroscopic characteristics of saturable absorbers based on crystals doped with tetrahedrally coordinated transition-metal ions (Cr²⁺, Cr⁴⁺, Cr⁵⁺, V³⁺, Cr²⁺, Fe²⁺) in addition to their use as passive Q-switches for solid-state lasers emitting in the visible and near-infrared regions are reviewed.

article

Diode-pumped Tm:KY(WO₄)₂ laser passively Q-switched with PbS-doped glass

M. S. Gaponenko, I. A. Denisov, V. E. Kisel, A. M. Malyarevich, more

Applied Physics B > 2008 > 93 > 4 > 787-791

Glass doped with PbS quantum dots is presented as a saturable absorber (SA) for a passive Q-switching of a diode-pumped 1.9 μm Tm:KYW laser. Output pulses with energy of 44 μJ at a repetition rate of 2.5 kHz with an average output power of 110 mW were obtained. The Q-switching conversion efficiency was 33%. The absorption saturation intensity of the glass doped with PbS quantum dots with a mean radius...

article

Passive Q-switching of erbium glass laser by magnesium aluminosilicate sitall with cobalt ions

Yu. V. Volk, A. M. Malyarevich, K. V. Yumashev, O. S. Dymshits, more

Journal of Applied Spectroscopy > 2007 > 74 > 1 > 140-146

We have studied the radiation output parameters for an erbium glass laser, lasing at a wavelength of 1.54 µm, with passive Q-switching by means of a cobalt-containing magnesium aluminosilicate sitall compared with a saturable absorber based on a magnesium aluminum spinel crystal with cobalt ions. We have shown that the output characteristics of the laser emission when using sitall are not inferior...

article

Nonlinear bleachable media for the near IR range based on lead chalcogenide quantum dots (review)

A. M. Malyarevich, K. V. Yumashev

Journal of Applied Spectroscopy > 2007 > 74 > 6 > 773-801

We present a review of results from study of the nonlinear optical properties and relaxation processes in lead chalcogenide quantum dots embedded in glass matrices of various compositions, and also designs for bleachable media based on these materials for Q-switched and mode-locked solid-state lasers in the near IR range. We consider the conditions which should be satisfied by the spectroscopic characteristics...

article

Saturation of absorption by lead sulfide nanoparticles in the main absorption band region

A. M. Malyarevich

Journal of Applied Spectroscopy > 2006 > 73 > 2 > 216-221

The spectral dependence of the degree of bleaching of glasses with PbS nanoparticles (average radius from 3 to 4 nm) has been studied in the main absorption band region. It has been established that the level of residual absorption in the bleached state decreases from 0.70 to 0.02 as we go from the high-frequency edge of the main absorption band for the lead sulfide nanoparticles toward the low-frequency...

article

Glasses with Lead Sulfide Nanoparticles for Laser Technologies

G. E. Rachkovskaya, G. B. Zakharevich, K. V. Yumashev, A. M. Malyarevich, more

Glass and Ceramics > 2004 > 61 > 9-10 > 331-333

The formation of nanoparticles of semiconducting lead sulfide in silicate and borosilicate glasses matrices is investigated. The dependence of the size of PbS particles on the temperature-time heat-treatment conditions is identified. The effect of clarification arising in theses nanostructural glass materials is established. The glasses developed can be used as solid passive locks in lasers radiating...

article

Relaxation of Bleaching in Lead Sulfide Nanoparticles at Different Pump Powers

V. G. Savitskii, N. N. Posnov, A. M. Malyarevich, K. V. Yumashev, more

Journal of Applied Spectroscopy > 2004 > 71 > 1 > 83-88

Relaxation of bleaching in PbS nanoparticles (of mean size 5.5 nm) has been investigated at different intensities of exciting radiation. The relaxation of bleaching is double exponential with fast (tens of picoseconds) and slow (nanoseconds) components. An increase in the excitation intensity leads to a decrease in the duration of the fast component and an increase in the ratio between the amplitudes...

article

Optical transient bleaching and induced absorption of surface-modified copper sulfide nanocrystals

K. V. Yumashev, P. V. Prokoshin, A. M. Malyarevich, V. P. Mikhailov, more

Applied Physics B > 1997 > 64 > 1 > 73-78

Abstract.Surface oxidation of CuS nanocrystals leads to the appearance of an additional absorption band in the near infrared. This is attributed to an energy level in the band gap, 1eV below the conduction band, with the character of an electron donor. Bleaching of this additional absorption band and induced absorption in both oxidized and unmodified samples take place. An energy level scheme for...

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Search results for: A. M. Malyarevich

Optical properties of transparent cobalt-containing magnesium aluminosilicate glass-ceramics doped with gallium oxide for saturable absorbers

Novel transparent glass-ceramics based on Co:Li(Al, Ga)₅O₈ nanocrystals for passive Q-switching of Er lasers

Glass-ceramics with Co²⁺:ZnO nanocrystals: Novel saturatable absorber for Er lasers

Synthesis, structure and Q-switching behaviour of transparent glass-ceramics based on a mixture of Co:β-Zn₂SiO₄ and Co:ZnO nanocrystals

Luminescence of transparent glass ceramics containing Er³⁺ and Yb³⁺ zirconate-titanate nanocrystals

Saturable absorbers based on tetrahedrally coordinated transition-metal ions in crystals (Review)

Diode-pumped Tm:KY(WO₄)₂ laser passively Q-switched with PbS-doped glass

Passive Q-switching of erbium glass laser by magnesium aluminosilicate sitall with cobalt ions

Nonlinear bleachable media for the near IR range based on lead chalcogenide quantum dots (review)

Saturation of absorption by lead sulfide nanoparticles in the main absorption band region

Glasses with Lead Sulfide Nanoparticles for Laser Technologies

Relaxation of Bleaching in Lead Sulfide Nanoparticles at Different Pump Powers

Optical transient bleaching and induced absorption of surface-modified copper sulfide nanocrystals

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