Angular dependence of the specular reflectance from an isotropic polydomain medium with large domains: surprising results regarding Brewster’s angle

2005 ◽  
Vol 22 (1) ◽  
pp. 185 ◽  
Author(s):  
Thomas G. Mayerhöfer ◽  
Janice L. Musfeldt
1995 ◽  
Vol 49 (3) ◽  
pp. 354-360 ◽  
Author(s):  
Stephen V. Pepper

A grazing angle objective on an infrared microspectrometer is studied for quantitative spectroscopy by considering the angular dependence of the incident intensity within the objective's angular aperture. The assumption that there is no angular dependence is tested by comparing the experimental reflectance of Si and KBr surfaces with the reflectance calculated by integrating the Fresnel reflection coefficient over the angular aperture under this assumption. Good agreement was found, indicating that the specular reflectance of surfaces can straightforwardly be quantitatively integrated over the angular aperture without considering nonuniform incident intensity. This quantitative approach is applied to the thickness determination of dipcoated Krytox on gold. The infrared optical constants of both materials are known, allowing the integration to be carried out. The thickness obtained is in fair agreement with the value determined by ellipsometry in the visible. Therefore, this paper illustrates a method for more quantitative use of a grazing angle objective for infrared reflectance microspectroscopy.


2007 ◽  
Author(s):  
Alexander C. Barrie ◽  
Bryan S. Taylor ◽  
Jared M. Ekholm ◽  
Jr Hargus ◽  
William A.

2019 ◽  
Vol 28 (2) ◽  
pp. 111-121 ◽  
Author(s):  
Chia‐Yuan Chen ◽  
Ting‐Yang Kuo ◽  
Chien‐Wu Huang ◽  
Zih‐Hong Jian ◽  
Po‐Tsung Hsiao ◽  
...  

2021 ◽  
pp. 149592
Author(s):  
Qin Xu ◽  
Tian Lan ◽  
Zhijun Wang ◽  
Chunxin Sun ◽  
Qi Peng ◽  
...  

1996 ◽  
Vol 118 (3) ◽  
pp. 702-708 ◽  
Author(s):  
H. K. Park ◽  
X. Zhang ◽  
C. P. Grigoropoulos ◽  
C. C. Poon ◽  
A. C. Tam

The thermodynamics of the rapid vaporization of a liquid on a solid surface heated by an excimer laser pulse is studied experimentally. The transient temperature field is measured by monitoring the photothermal reflectance of an embedded thin film in nanosecond time resolution. The transient reflectivity is calibrated by considering a temperature gradient across the sample based on the static measurements of the thin film optical properties at elevated temperatures. The dynamics of bubble nucleation, growth, and collapse is detected by probing the optical specular reflectance. The metastability behavior of the liquid and the criterion for the onset of liquid–vapor phase transition in nanosecond time scale are obtained quantitatively for the first time.


1988 ◽  
Vol 66 (9) ◽  
pp. 905-908 ◽  
Author(s):  
X. Yan ◽  
M.J. Naughton ◽  
O.S. Cheema ◽  
R.V. Chamberlin ◽  
S.Y. Hsu ◽  
...  
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