Mode‐mismatched thermal lens determination of temperature coefficient of optical path length in soda lime glass at different wavelengths

1994 ◽  
Vol 75 (8) ◽  
pp. 3732-3737 ◽  
Author(s):  
M. L. Baesso ◽  
J. Shen ◽  
R. D. Snook
Keyword(s):  
Temperature Coefficient ◽  
Thermal Lens ◽  
Path Length ◽  
Soda Lime ◽  
Optical Path Length ◽  
Optical Path ◽  
Soda Lime Glass

Thermal lens determination of the temperature coefficient of optical path length in optical materials

2003 ◽  
Vol 74 (1) ◽  
pp. 877-880 ◽  
Author(s):  
A. A. Andrade ◽  
T. Catunda ◽  
I. Bodnar ◽  
J. Mura ◽  
M. L. Baesso
Keyword(s):  
Temperature Coefficient ◽  
Thermal Lens ◽  
Path Length ◽  
Optical Materials ◽  
Optical Path Length ◽  
Optical Path

The temperature coefficient of the optical path length as a function of the temperature in different optical glasses

2004 ◽  
Vol 348 ◽  
pp. 240-244 ◽  
Author(s):  
A. Steimacher ◽  
A.N. Medina ◽  
A.C. Bento ◽  
J.H. Rohling ◽  
M.L. Baesso ◽  
...  
Keyword(s):  
Temperature Coefficient ◽  
Path Length ◽  
Optical Path Length ◽  
Optical Path ◽  
Optical Glasses

scholarly journals Inversion in the temperature coefficient of the optical path length close to the glass transition temperature in tellurite glasses

2009 ◽  
Vol 94 (25) ◽  
pp. 251903 ◽  
Author(s):  
S. M. Lima ◽  
L. H. C. Andrade ◽  
E. A. Falcão ◽  
A. Steimacher ◽  
N. G. C. Astrath ◽  
...  
Keyword(s):  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Temperature Coefficient ◽  
Path Length ◽  
Optical Path Length ◽  
Optical Path ◽  
Tellurite Glasses

Investigation of particulate systems using optical pathlength spectroscopy

2000 ◽  
Vol 627 ◽  
Author(s):  
Gabriel Popescu ◽  
Aristide Dogariu
Keyword(s):  
Path Length ◽  
Random Media ◽  
Michelson Interferometer ◽  
Industrial Process ◽  
Optical Path Length ◽  
Industrial Applications ◽  
Optical Path ◽  
Interference Signal ◽  
Optical Length ◽  
Reference Mirror

ABSTRACTIn many industrial applications involving granular media, knowledge about the structural transformations suffered during the industrial process is desirable. Optical techniques are noninvasive, fast, and versatile tools for monitoring such transformations. We have recently introduced optical path-length spectroscopy as a new technique for random media investigation. The principle of the method is to use a partially coherent source in a Michelson interferometer, where the fields from a reference mirror and the sample are combined to obtain an interference signal. When the system under investigation is a multiple-scattering medium, by tuning the optical length of the reference arm, the optical path-length probability density of light backscattered from the sample is obtained. This distribution carries information about the structural details of the medium. In the present paper, we apply the technique of optical path-length spectroscopy to investigate inhomogeneous distributions of particulate dielectrics such as ceramics and powders. The experiments are performed on suspensions of systems with different solid loads, as well as on powders and suspensions of particles with different sizes. We show that the methodology is highly sensitive to changes in volume concentration and particle size and, therefore, it can be successfully used for real-time monitoring. In addition, the technique is fiber optic-based and has all the advantages associated with the inherent versatility.

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