Optical diagnostics of rough surfaces by inhomogeneously polarized laser illumination

1997 ◽  
Author(s):  
Oksana I. Barchuck ◽  
Alexandr G. Chumakov ◽  
Vitalij N. Kurashov
Keyword(s):  
Rough Surfaces ◽  
Optical Diagnostics ◽  
Laser Illumination

Optical diagnostics of slightly rough surfaces

1992 ◽  
Vol 31 (1) ◽  
pp. 140 ◽  
Author(s):  
O. V. Angelsky ◽  
P. P. Maksimyak
Keyword(s):  
Rough Surfaces ◽  
Optical Diagnostics

Confocal Raman mapping

1992 ◽  
Vol 50 (2) ◽  
pp. 1514-1515
Author(s):  
J. Barbillat ◽  
M. Delhaye ◽  
P. Dhamelincourt
Keyword(s):  
Chemical Species ◽  
Diffraction Limit ◽  
Microscopic Level ◽  
Raman Mapping ◽  
Complete Spectrum ◽  
Laser Illumination ◽  
Ccd Detector ◽  
Raman Microprobe ◽  
Photodiode Array ◽  
Raman Image

Raman mapping, with a spatial resolution close to the diffraction limit, can help to reveal the distribution of chemical species at the surface of an heterogeneous sample.As early as 1975,three methods of sample laser illumination and detector configuration have been proposed to perform Raman mapping at the microscopic level (Fig. 1),:- Point illumination:The basic design of the instrument is a classical Raman microprobe equipped with a PM tube or either a linear photodiode array or a two-dimensional CCD detector. A laser beam is focused on a very small area ,close to the diffraction limit.In order to explore the whole surface of the sample,the specimen is moved sequentially beneath the microscope by means of a motorized XY stage. For each point analyzed, a complete spectrum is obtained from which spectral information of interest is extracted for Raman image reconstruction.- Line illuminationA narrow laser line is focused onto the sample either by a cylindrical lens or by a scanning device and is optically conjugated with the entrance slit of the stigmatic spectrograph.

The Effects of Laser Illumination on Operational and Visual Performance of Pilots During Final Approach

2004 ◽  
Author(s):  
Van B. Nakagawara ◽  
Ronald W. Montgomery ◽  
Archie E. Dillard ◽  
Leon N. McLin ◽  
C. William Connor
Keyword(s):  
Visual Performance ◽  
Laser Illumination ◽  
Final Approach

Infrared spectra of carbon monoxide on platinum, iridium and copper ; comparison of flat and rough surfaces

1981 ◽  
Vol 78 ◽  
pp. 927-932 ◽  
Author(s):  
F.J.C.M. Toolenaar ◽  
G.J. van der Poort ◽  
F. Stoop ◽  
V. Ponec
Keyword(s):  
Carbon Monoxide ◽  
Infrared Spectra ◽  
Rough Surfaces

OPTICAL PROPERTIES OF THIN FILMS ON ROUGH SURFACES

1983 ◽  
Vol 44 (C10) ◽  
pp. C10-363-C10-366 ◽  
Author(s):  
J. Vlieger ◽  
M. M. Wind
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Rough Surfaces
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