A. S. Rokhmin

A. S. Rokhmin
ITMO University | SPbNRU ITMO · Department of Optical Information Technologies and Materials

About

10
Publications
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26
Citations
Citations since 2017
0 Research Items
9 Citations
20172018201920202021202220230.00.51.01.52.02.53.0
20172018201920202021202220230.00.51.01.52.02.53.0
20172018201920202021202220230.00.51.01.52.02.53.0
20172018201920202021202220230.00.51.01.52.02.53.0
Introduction

Publications

Publications (10)
Article
The partially polarized luminescence of erbium- and thulium-doped glasses exited by the linearly polarized laser radiation was observed. The dependence of the polarization degree on the RE ions concentration and on the glass matrix composition were investigated. For erbium- and thulium-doped glasses, the maximum polarization degree was shown to rea...
Article
Full-text available
A technology for production of nano-glass-ceramic materials based on aluminosilicate glass doped with chromium oxide is proposed. A comparative study of the spectral luminescence properties of forsterite glass ceramics and single crystal doped with chromium ions is performed. It is shown that chromium ions are partially incorporated into the glass-...
Article
Oxy-fluoride glasses doped with different activators have been developed and synthesized. Investigation of spectral and luminescent properties of the oxy-fluoride glasses have been carried out. The prospects of applications of the glasses as a red phosphor for white light emitted diodes have been discussed.
Article
A partial polarization of luminescence (1.47 μm) of thulium-activated glasses excited by linearly polarized laser light (0.79 μm) is detected. The degree of polarization depends both on the spectral range of excitation and on the spectral range of detection, reaching a maximum value of ∼0.1. An increase in the thulium concentration leads to a decre...
Article
A partial polarization of luminescence in laser phosphate and silicate erbium-doped glasses was found to take place for the fundamental laser transition 4I 13/2→4I 15/2 (λ=1.55 μm) under excitation by linearly polarized laser radiation (532 and 790–990 nm). The shape of the luminescence spectrum depends on the wavelength of the exciting light and o...
Article
The spectral and luminescence properties of highly refractive thulium-doped laser oxide glasses (germanate, antimony-silicate, tellurite, and bismuth glasses) have been studied in the near-IR region, 1.4-1.8 µm. The absorption cross sections from the ground and excited states and the stimulated-emission cross sections are determined and compared, a...
Article
Full-text available
The gain/loss spectra of ytterbium-erbium-doped laser glasses have been investigated in the 1.5-μm region. A direct experimental method has been developed for determining the population of the excited metastable 4I13/2 level, the contour of the gain/loss spectrum, and its variation at various pumping levels. The experimental and calculated spectra...
Conference Paper
Full-text available
In this paper, we report a simple method for direct measurement of gain/loss spectra and the determination of the population of excited metastable level in bulk samples of Yb/Er-laser glasses prepared in laboratory conditions. The method is convenient for investigation of gain/loss spectra for different glass compositions and hosts
Article
Full-text available
Gain/loss spectra in ytterbium-erbium doped bulk glass samples have been investigated within spectral range of 1.5 mum. Experimental methods for determination of the population of excited metastable level, gain/loss spectra, and their variations versus pump power have been developed. A comparison of the experimental and calculated gain/loss spectra...
Article
The partial polarization of luminescence in phosphate and silicate erbium glasses in the range of 1.5 μm under the stimulation by the linearly polarized laser light (532 nm, 790-990 nm) has been detected. The degree of polarization depends both on a spectral range of excitation and on a spectral range of registration, reaching maximum value ~1%. Th...

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