Optical properties of Sm 3+ -doped TeO 2 WO 3 GeO 2 glasses for solid state lasers

2018 ◽  
Vol 533 ◽  
pp. 76-82 ◽  
Author(s):  
T. Subrahmanyam ◽  
K. Rama Gopal ◽  
R. Padma Suvarna ◽  
B. Chinna Jamalaiah ◽  
Ch Srinivasa Rao
Keyword(s):  
Optical Properties ◽  
Solid State ◽  
Solid State Lasers

Fabrication and Optical Properties of High-Performance Polycrystalline Nd:YAG Ceramics for Solid-State Lasers

1995 ◽  
Vol 78 (4) ◽  
pp. 1033-1040 ◽  
Author(s):  
Akio Ikesue ◽  
Toshiyuki Kinoshita ◽  
Kiichiro Kamata ◽  
Kunio Yoshida
Keyword(s):  
Optical Properties ◽  
Solid State ◽  
High Performance ◽  
Solid State Lasers

scholarly journals Ionic conductivity and optical properties of self-activated phosphor CsYP2O7

2020 ◽  
Author(s):  
mayssa karray ◽  
A. OUESLETI ◽  
K. KHIROUNI ◽  
M. GARGOURI
Keyword(s):  
Optical Properties ◽  
Solid State ◽  
Grain Boundary ◽  
Negative Temperature ◽  
Solid State Reaction Method ◽  
Solid State Lasers ◽  
Ionic Conductors ◽  
X Ray ◽  
Nyquist Plots ◽  
Absorption Measurements

Abstract Pyrophosphates are interesting compounds as optical materials, ionic conductors, solid electrolytes, battery electrodes, solid-state lasers and active layer for sensors. In this context, the compound CsYP 2 O 7 has been synthesized by the solid-state reaction method. The X-ray powder diffraction at room temperature confirmed the phase formation of the synthesized compound in the monoclinic phase. The composition and morphology were performed by energy dispersive spectroscopy coupled with scanning electron microscope . The optical properties of the compound were studied by UV–Vis absorption spectroscopy. By direct investigation of the UV absorption measurements and using the Tauc model, we have found that the direct optical band gap is equal to 3.7eV. Two of the relaxation mechanisms were clearly identified from Nyquist plots and modulus analysis, which can be discerned to both grain and grain boundary contributions effect. The obtained results were analyzed by fitting the experimental data to an equivalent circuit model.Bulk resistance and grain boundary resistance decreased with the increase of temperature, which confirmed negative temperature coefficient of resistance behavior. The same values of activation energies obtained from the impedance (0.43 eV ) and hopping frequency (0.42 eV),prove that the transport happens through an ion hopping mechanism dominated by the motion of the Cs + cations in the structure of the CsYP 2 O 7 material. The results confirm tha the synthesized compound is suitable for catalysis and optoelectronic applications.

Crystal chemistry of (RE, A)2M3O7 compounds (RE=Y, lanthanide; A=Ba, Sr, Ca; M=Al, Ga)

1999 ◽  
Vol 14 (3) ◽  
pp. 195-202 ◽  
Author(s):  
J. M. S. Skakle ◽  
R. Herd
Keyword(s):  
Optical Properties ◽  
Solid State ◽  
Neutron Diffraction ◽  
General Formula ◽  
Diffraction Data ◽  
Nonlinear Optical ◽  
Neutron Diffraction Data ◽  
Solid State Lasers ◽  
Size Mismatch ◽  
X Ray

Phases of general formula (RE, A)2M3O7 (RE=lanthanide, A=Ca, Sr, Ba; M=Ga, Al) are of interest for their nonlinear optical properties and have potential as solid state lasers. Their structures have been refined using X-ray and neutron diffraction data and are related to gehlenite, Ca2Al2SiO7, with M cations occupying Al and Si sites and RE and A cations sharing the Ca site with no evidence for ordering, although they occur in the ratio 1:1 because of stoichiometry; the M cations are tetrahedrally coordinated. (RE, Ba)2M3O7 compounds cannot be synthesized for M=Al or for RE cations smaller than Sm; this limitation is believed to be due to size mismatch between cations within the structure.

Periodic Oscillating Modes in Single-Mode Solid-State Lasers

2004 ◽  
Vol 61 (3) ◽  
pp. 256-271
Author(s):  
G. P. Kovalenko ◽  
S. V. Kolomiets
Keyword(s):  
Solid State ◽  
Single Mode ◽  
Solid State Lasers
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