Optical Characterization of Silica Aerogel
Keyword(s):
ABSTRACTTwo optical methods are described for mapping the local variations of refractive index within monoliths of porous silica aerogel. One is an interferometrie measurement that produces “iso-index” fringes in a two dimensional image; an orthogonal view gives the third dimension information. The other method uses the deflection of a He-Ne laser beam to map the gradient index within a sample. The quantification of the measurements is described and the accuracy of the results is discussed.
2002 ◽
Vol 16
(08)
◽
pp. 1217-1223
◽
Keyword(s):
1988 ◽
Vol 25
(7)
◽
pp. 1128-1131
◽
2006 ◽
Vol 83
(4-9)
◽
pp. 1798-1804
◽
Keyword(s):
Keyword(s):
Keyword(s):
1975 ◽
Vol 16
(8)
◽
pp. 993-996
◽
1991 ◽
Vol 12
(4)
◽
pp. 393-402
◽