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Author Lebedev, V. F. ♦ Gaister, A. V. ♦ Zharikov, Evgeny V. ♦ Tenyakov, S. Yu ♦ Levchenko, A. E. ♦ Dianov, Evgenii M.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword MATERIALS SCIENCE ♦ CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY ♦ ABSORPTION SPECTRA ♦ CHROMIUM ♦ CHROMIUM IONS ♦ CONTROLLED ATMOSPHERES ♦ CZOCHRALSKI METHOD ♦ DOPED MATERIALS ♦ LUMINESCENCE ♦ MINERALS ♦ MONOCRYSTALS ♦ OXIDATION ♦ OXYGEN ♦ POLARIZATION ♦ SATURATION ♦ ATMOSPHERES ♦ CHARGED PARTICLES ♦ CHEMICAL REACTIONS ♦ CRYSTAL GROWTH METHODS ♦ CRYSTALS ♦ ELEMENTS ♦ EMISSION ♦ IONS ♦ MATERIALS ♦ METALS ♦ NONMETALS ♦ PHOTON EMISSION ♦ SPECTRA ♦ TRANSITION ELEMENTS
Abstract The polarisation absorption spectra of forsterite single crystals grown from a melt containing from 0.015 to 0.97 wt% of chromium are studied. Most of the crystals were grown by the Czochralski method under standard oxidation conditions (1.4-2.4 vol % of oxygen). Some crystals were grown in the atmosphere with a higher content of oxygen ({approx}12 vol %) or in the neutral atmosphere (100% of Ar). Crystals grown from a melt containing more than 0.6 wt % of chromium exhibited the saturation of absorption of Cr{sup 4+} ions. The maximum absorption coefficient of Cr{sup 4+} ions at 1064 nm was {approx}3.2 cm{sup -1}. The relative content of Cr{sup 3+} ions also increased (approximately by 70% in the range studied) with increasing the doping level. The relative content of Cr{sup 3+} ions in a crystal grown in the atmosphere with a high content of oxygen ({approx}12 vol %) was approximately lower by a factor of 1.5 than that in a crystal grown in the standard oxidation atmosphere. (active media)
ISSN 10637818
Educational Use Research
Learning Resource Type Article
Publisher Date 2003-03-31
Publisher Place United States
Journal Quantum Electronics
Volume Number 33
Issue Number 3


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