Phonon linewidths and line-shapes from Brillouin spectra

1983 ◽  
Vol 61 (2) ◽  
pp. 348-351 ◽  
Author(s):  
J. J. Vanderwal ◽  
D. Walton
Keyword(s):  
Amorphous Silica ◽  
Line Shapes ◽  
Deconvolution Technique ◽  
Fabry Perot

A multipassed Fabry–Perot interferometer has been used to determine phonon linewidths. The line-shapes may also be obtained using a Bayesian deconvolution technique. Results on amorphous silica and CN− doped KCl are presented as illustrations.

scholarly journals Resonance characteristics of transmissive optical filters based on metal/dielectric/metal structures

2020 ◽  
Vol 44 (2) ◽  
pp. 219-228
Author(s):  
D.V. Nesterenko
Keyword(s):  
Resonance Line ◽  
Structural Parameters ◽  
Propagation Constant ◽  
Field Enhancement ◽  
Optical Filters ◽  
Transfer Model ◽  
Optical Processing ◽  
Line Shapes ◽  
Fabry Perot ◽  
Normal Light

The resonance characteristics of the Fabry-Pérot resonator modes supported by metal/dielectric/metal planar structures are studied in the case of absorbing media for near-to-normal light incidence. Approximations based on rigorous solution and field-transfer model for the field and resonance line shapes in spectra are attributed to the class of Fano and Lorentz resonances. The analytical expressions are obtained for the propagation constant and field enhancement of the mode, width, height and slope of resonance line shapes in spectra as functions of structural parameters. With estimation of field characteristics of the fabricated loss structures based on aluminum and quartz, the peaks in the transmission spectra can be attributed to the excitation of Fabry-Pérot modes. Fundamental characterization of Fabry-Pérot resonances may find applications in optical processing and sensing.

A Least-Squares Deconvolution Technique for the Photoelectric Fabry-Perot Spectrometer

1967 ◽  
Vol 6 (10) ◽  
pp. 1701 ◽  
Author(s):  
Harold P. Larson ◽  
Kenneth L. Andrew
Keyword(s):  
Least Squares ◽  
Deconvolution Technique ◽  
Fabry Perot

Amorphous silica coating on α-alumina particles

1995 ◽  
Vol 53 ◽  
pp. 210-211
Author(s):  
J. W. Mellowes ◽  
C. M. Chun ◽  
I. A. Aksay
Keyword(s):  
Amorphous Silica ◽  
Heterogeneous Nucleation ◽  
Homogeneous Nucleation ◽  
Silica Coating ◽  
Full Density ◽  
Optimal Conditions ◽  
Fine Grained ◽  
Alumina Particles ◽  
Complete Mullitization ◽  
Powder Compacts

Mullite (3Al2O32SiO2) can be fabricated by transient viscous sintering using composite particles which consist of inner cores of a-alumina and outer coatings of amorphous silica. Powder compacts prepared with these particles are sintered to almost full density at relatively low temperatures (~1300°C) and converted to dense, fine-grained mullite at higher temperatures (>1500°C) by reaction between the alumina core and the silica coating. In order to achieve complete mullitization, optimal conditions for coating alumina particles with amorphous silica must be achieved. Formation of amorphous silica can occur in solution (homogeneous nucleation) or on the surface of alumina (heterogeneous nucleation) depending on the degree of supersaturation of the solvent in which the particles are immersed. Successful coating of silica on alumina occurs when heterogeneous nucleation is promoted and homogeneous nucleation is suppressed. Therefore, one key to successful coating is an understanding of the factors such as pH and concentration that control silica nucleation in aqueous solutions. In the current work, we use TEM to determine the optimal conditions of this processing.

Diffraction de réseaux d'indice en cavité Fabry-Pérot

2000 ◽  
Vol 10 (PR8) ◽  
pp. Pr8-251
Author(s):  
L. Menez ◽  
I. Zaquine ◽  
A. Maruani ◽  
R. Frey
Keyword(s):  
Fabry Perot
Sign in / Sign up

Export Citation Format

Share Document