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Friday, July 31, 2020 | History

2 edition of Rare earth doped yttrium aluminum garnet (YAG) selective emitters found in the catalog.

Rare earth doped yttrium aluminum garnet (YAG) selective emitters

Rare earth doped yttrium aluminum garnet (YAG) selective emitters

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  • 31 Currently reading

Published by National Aeronautics and Space Administration, Glenn Research Center, National Technical Information Service, distributor in [Cleveland, Ohio], [Springfield, Va .
Written in English

    Subjects:
  • Rare earth compounds.,
  • Yttrium-aluminum garnet.,
  • Doped crystals.,
  • Spectral theory.,
  • Models.,
  • Holmium.

  • Edition Notes

    StatementDonald L. Chubb ... [et al.].
    SeriesNASA/TM -- 1999-208835., NASA technical memorandum -- 208835.
    ContributionsChubb, Donald L., NASA Glenn Research Center.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL15552323M

    They are limited by the physical properties of rare-earth-doped silica materials. We have developed single-crystal yttrium aluminum garnet (YAG) fibers, whose physical properties are superior to those of amorphous silica and which handle much higher output powers.   Yttrium aluminum borate (YAB) is isostructural with the mineral Huntite and has a trigonal crystal structure of R32 space group. Both trivalent rare-earth and transition metal ions (e.g., chromium(III)) can be doped into the material, where rare-earth ions then occupy yttrium sites and transition metal ions replace aluminum(III) on sites of.

      Yttrium-aluminum-garnet crystals can be doped with holmium for solid-state lasers. Holmium is used in MRI machines to concentrate the magnetic field. Isotopes of holmium absorb neutrons in nuclear. Ytterbium doped Yttrium Aluminum Garnet (Yb:YAG) is a crystalline solid used in photo optic applications. Additional technical, research and safety Yttrium is not found in nature as a free element and is almost always found combined with the lanthanides in rare earth minerals.

    A neodymium‐doped yttrium‐aluminum garnet (Y 3 A1 5 O 12, YAG) (Nd:YAG) ceramic that contained – at.% neodymium additives and exhibited nearly the same optical properties as those of a single crystal was fabricated by a solid‐state reaction method using high‐purity gh the integrated absorption intensity of the 2 H 9/2 + 4 F 5/2 bands simply . Neodymium doped Yttrium Aluminum Garnet (Nd:Y 3 Al 5 O 12 or Nd:YAG) crystal, which continues as the best of the rare earth garnet materials that are characterized by four-level laser operation which permits low threshold pulse and cw operation. It is the most mature and widely used solid-state laser material adopted by R&D, medical, industrial and military customers.


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Rare earth doped yttrium aluminum garnet (YAG) selective emitters Download PDF EPUB FB2

Yttrium aluminum garnet, Y 3 Al 5 O 12, is a cubic crystal with six groups of equivalent Y 3+ sites of D 2 symmetry (i.e., three perpendicular C 2 axes) related by the symmetry operations of the crystal point group.

Tm 3+ has a 4f 12 electronic configuration and a single naturally abundant isotope, Tm, with I = 1/2. In D 2 symmetry, all CF levels are nondegenerate and the.

Yttrium aluminum garnet (YAG, Y 3 Al 5 O 12) is a synthetic crystalline material of the garnet group. It is a cubic yttrium aluminum oxide phase, with other examples being YAlO 3 in a hexagonal or an orthorhombic, perovskite-like form, and the monoclinic Y 4 Al 2 O YAG, like garnet and sapphire, has no uses as a laser medium when r, after being doped Category: synthetic mineral.

Among many rare-earth aluminate crystals, rare-earth garnet, Y 3 Al 5 O 12, doped with Cr 2 O 3 (Cr-doped YAG), is found to be useful as the sensor materials for fluorescence thermometer.

Fluorescence lifetime of Cr-doped YAG crystal decreases from 2 ms to ms as the temperature increases from K to by:   Rare-earth-(RE)-doped yttrium aluminium garnets Y 3 Al 5 O 12 (YAG) are important photonic materials with a wide range of applications as active laser materials, phosphors and scintillators [1–3].Nd-doped YAG (Nd: YAG) is one of the most important solid state lasers.

Ce-doped yttrium aluminium garnet (Ce: YAG) is being used as a phosphor or Cited by: Neodymium is also used with various other substrate crystals, such as yttrium aluminium garnet in the Nd:YAG laser. An Er:YAG laser (erbium-doped yttrium aluminium garnet laser, erbium YAG laser) is a solid-state laser whose active laser medium is erbium-doped yttrium aluminium garnet (Er:Y 3 Al 5 O 12).

YAG laser may refer to two types of lasers that use yttrium aluminum garnet. Aluminium Yttrium Garnet: Scientists have been showing increasing interest in the field of nanoparticles research mainly due to the interesting and unexpected outcomes that are possible by altering the atomic and molecular properties of elements.

Nanotechnology provides novel and unique solutions in the field of biotechnology, optics, electronics, cosmetics etc. In ‐ppm‐yttrium‐doped alumina, an abundance of yttrium aluminum garnet precipitates also is observed.

Implications of these observations to the creep behavior of alumina are discussed. The similarity in the segregation behavior of yttrium and lanthanum highlights the potential of lanthanum‐doped alumina for improved creep properties. Chapter Neodymium-doped yttrium aluminum garnet (Nd:YAG) and neodymium-doped yttrium orthovanadate (Nd:YVO4) Abstract: Introduction.

Oscillators for neodymium lasers. Power/energy limitations and oscillator scaling concepts. Power scaling with master oscillator/power amplifier (MOPA) architectures. Future trends. Novel active devices and emerging applications of rare-earth doped optical materials.

Processing methods of active components in bulk, powder and waveguide forms. The submission deadline is 30 April You may send your manuscript now or up until the deadline. Submitted papers should not be under consideration for publication elsewhere. Shuilin Chen's 24 research works with 48 citations and 1, reads, including: Advanced Characterization of an Optical Fibre Sensor System based on an MPPC Detector for Measurement of X-ray.

24 February Enhancement of laser cooling efficiency in rare-earth-doped oxide at elevated high temperature. Yuta Nakayama, Yukihiro Harada We demonstrated an enhancement of the ideal laser-cooling efficiency in Yb-doped yttrium aluminum garnet, (Yb:Y)AG, and Er-doped yttrium aluminum garnet, (Er:Y)AG, ceramic discs above K.

X-ray photoelectron spectroscopy (XPS/ESCA) has been employed to investigate pure single crystals and powdered samples of yttrium aluminum garnet, Y3Al5O12 (YAG), and YAG crystals doped with several rare earth elements (Ln = Pr, Er, Ho, Tm) and a transition metal (Cr).

Core level XPS peak shapes of the main elements forming the garnet structure can be. Yttrium aluminum garnet (YAG) phosphor powders doped with rare earth ions (Eu 3+, Pr 3+ and Tb 3+) were synthesized by mixed fuel combustion method at low temperature.

The XRD analysis of the powders confirms the formation of pure phase of YAG even at low temperature. A systematic study of the fluorescence properties of YAG:Eu3+. Rare Earth Doped Yttrium Aluminum Garnet (YAG) Selective Emitters Donald L.

Chubb Glenn Research Center, Cleveland, Ohio AnnaMarie T. Pal, Martin O. Patton, and Phillip P. Jenkins Essential Research, Inc., Cleveland, Ohio Prepared for the Fall Meeting sponsored by The Materials Research Society Boston, Massachusetts, November December 4, Cerium doped gadolinium yttrium gallium aluminum garnet ceramics, GYGAG:Ce for short, have drawn a lot of attention and showed a very promising application in medical CT detectors.

Rare‐earth Based Insulating Nanocrystals: Improved Luminescent Nanophosphors for Plasma Display Panels Yttrium Aluminum Garnet Y 3 Al 5 O Eu 3+ (YAG: Eu 3+) Nanophosphors Time Evolution Studies.

Europium Doped Yttrium Ortho‐borate (YBO 3: Eu 3+) Nanophosphors Europium Doped Yttrium Oxide (Y 2 O 3: Eu 3+) Nanophosphors. Yttrium aluminum garnet (YAG) (chemical composition Y 3 Al 5 O 12) is a well-known host material for obtaining highly efficient luminescent materials (phosphor) that offer unprecedented applications in the science and technology structure of Y 3 Al 5 O 12 permits facile doping of lanthanide ions, leading to the formation of different compositions.

[89] J. Lu, K. Ueda, H. Yagi, T. Yanagitani, Y. Akiyama, and A. Kaminskii, Neodymium doped yttrium aluminum garnet (Y 3 Al 5 O 12) nanocrystalline ceramics – a new generation of solid state laser and optical materials, J.

Alloys Comp. () – Rare-earth doped yttrium aluminum garnet single crystal fibers for high power laser applications. PDF. PDF format is widely accepted and good for printing. Plug-in required.

PDF-1 ( MB) Citation & Export. View Usage Statistics. Staff View. Citation & Export. Hide. Simple citation. Bera, Subhabrata. 2 Rare-earth quantum photonic materials and devices.

Rare-earth elements include lanthanides, scandium and yttrium. They are common dopants in host crystals such as yttrium aluminum garnet (Y 3 Al 5 O 12 or YAG), Y 2 SiO 5 (YSO), Y 2 O 3, or YVO 4 (YVO).

The 4f shell of rare-earth ions in crystals is partially occupied and is shielded from the interaction with the. The host crystals include yttrium aluminum garnet (Y2A), yttrium lithium fluorides (YLiF4), and barium yttrium fluoride (BaY2F8).

These hosts were doped with single or multiple rare earth elements for lasing action at wavelengths in the near infrared ( micrometers).At the present time, commercially available white light emitting diodes (WLEDs) are predominantly phosphor based (e.g., a yellow-emitting phosphor, such as cerium-doped yttrium aluminum garnet or (YAG):Ce3+, coupled with a blue-emitting InGaN/GaN diode), which rely heavily on rare-earth (RE) metals.Nd:YAG (neodymium-doped yttrium aluminum garnet; Nd:Y 3 Al 5 O 12) is a crystal that is used as a lasing medium for solid-state lasers.

The dopant, triply ionized neodymium, Nd(III), typically replaces a small fraction (1%) of the yttrium ions in the host crystal structure of the yttrium aluminum garnet (YAG), since the two ions are of similar.