Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Jean-Pierre Borgogno"'
Autor:
Trudy Tuttle-Hart, C. K. Carniglia, Andreas Saxer, Jean-Pierre Borgogno, Gerard Albrand, B. Lazarides, Emile Pelletier, Jean M. Bennett, T. H. Allen, Karl H. Guenther, Reed A. Schmell
Publikováno v:
Applied optics. 28(16)
Fourteen university, government, and industrial laboratories prepared a total of twenty pairs of single-layer titanium dioxide films. Several laboratories analyzed the coatings to determine their optical properties, thickness, surface roughness, abso
Publikováno v:
Applied optics. 21(22)
The refractive index of a layer is a sensitive function of the preparation conditions. Normal incidence measurement of the optical properties can reveal possible inhomogeneity of index. We propose a method of automatic determination of the complex re
Publikováno v:
Optical Interference Coatings.
The Photothermal Deflection Technique (PD) is used for mapping absorption in optical coatings. We have observed a strong influence ofthe nature ofthe substrate material on measured absorptance. Different single layer films deposited in the same condi
Publikováno v:
Optical Interference Coatings.
Photothermal Deflection (PD) is used for mapping very small absorption losses (as low as 10 -6 ). Measurements performed on bare substrates have shown the existence of highly non uniform absorption localized on the substrate surface. High absorption
Autor:
Dominique Endelema, Hervé Rigneault, Jean-Pierre Borgogno, Emmanuel Rausa, Antonella Rizzo, Francois Flory
Publikováno v:
Optical Interference Coatings.
Consequences of the columnar microstructure of dielectric thin films deposited by conventional vacuum evaporation are discussed. A model associated with the columns is used together with in situ and in air measurements to show that the anisotropy of
Publikováno v:
Applied Optics. 34:2372
The surface quality of bare substrates and preparation procedures take on an important role in optical coating performances. The most commonly used techniques of characterization generally give information about roughness and local defects. A phototh
Publikováno v:
Thin Solid Films. 102:209-220
The determination of the extinction coefficient of a material deposited in thin film form is generally made from Wolter's formula using (R − R′) T . To avoid the measurement of R ′, we have derived an analogous formula involving only R and T in
Publikováno v:
Thin Solid Films. 146:145-154
Resume Les materiaux evapores par les methodes classiques donnent souvent des couches inhomogenes. Il est admis depuis longtemps que le modele classique de la couche homogene, isotrope, a faces planes et paralleles ne rend pas correctement compte des
Autor:
Emile Pelletier, Jean-Pierre Borgogno
Publikováno v:
Applied Optics. 28:2895
Data obtained from reflectance and transmittance measurements are used to determine the extinction coefficient. We show that accuracy is limited by the substrate quality and interface roughnesses of the layer.
Autor:
C. K. Carniglia, Tracy F. Thonn, V. A. Hodgkin, T. Tuttle Hart, Jean-Pierre Borgogno, D. M. Quinn, R. M. Swenson, Emile Pelletier, Ursula J. Gibson, J. A. Dobrowolski, P. A. Temple, Jean M. Bennett, F. C. Ho, Martin Purvis, W. P. Klapp, D. P. Arndt, R. M. A. Azzam, H. A. Macleod, W. E. Case, D. H. Strome
Publikováno v:
Applied Optics. 23:3571
The seven participating laboratories received films of two different thicknesses of Sc2O3 and Rh. All samples of each material were prepared in a single deposition run. Brief descriptions are given of the various methods used for determination of the