class Rayleigh_Instrument_BRDF_Model
The class Rayleigh_Instrument_BRDF_Model calculates
the effective BRDF for non-diffusely scattering sample
measured with an instrument having a field of view,
lFOV, when the sample is surrounded by
air.
Parameters:
| Parameter | Data Type | Description | Default |
|---|---|---|---|
| lambda | double | Wavelength of the light
in vacuum [µm]. (Inherited from BRDF_Model.) |
0.532 |
| type | int | Indicates
whether scattering is evaluated in reflection (0) or
transmission (1). (Inherited from BRDF_Model.) |
0 |
| substrate | dielectric_function | The
optical constants of the substrate, expressed as a
complex number (n,k) or, optionally, as a function of
wavelength. (Inherited from BRDF_Model.) |
(4.05,0.05) |
| stack | dielectric_stack | Description of any stack
of films deposited on the substrate, usually specified
by a file. See dielectric_stack, for more
information. |
no films |
| field_of_view | double | The field of view at the sample [µm]. | 1000 |
| air | dielectric_function | The
optical constants of the substrate, expressed as a
complex number (n,k) or, optionally, as a function of
wavelength. (Inherited from BRDF_Model.) |
(1+2784E-7,0) |
| number_density | double | The volume number density [µm-3] of the molecules surrounding the sample. This parameter can be obtained by the ideal gas law and depends upon temperature and pressure. | 2.51E-7 |
See also:
SCATMECH Home, Conventions, Instrument_BRDF_Model, dielectric_stack
T.A. Germer and C.C. Asmail, C. C., "A goniometric optical scatter instrument for bidirectional reflectance distribution function measurements with out-of-plane and polarimetry capabilities," in Scattering and Surface Roughness, Z.-H. Gu and A.A. Maradudin, Editors, Proc. SPIE 3141, 220-231 (1997).
C. Asmail, J. Hsia, A. Parr, and J. Hoeft, "Rayleigh scattering limits for low-level bidirectional reflectance distribution function measurements," Appl. Opt. 33, 6084-6091 (1994).
Include file:
#include "rayinst.h"
Source code:
rayinst.cpp
Definition of public elements:
class Rayleigh_Instrument_BRDF_Model : public Instrument_BRDF_Model { };
For More Information
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Current SCATMECH version: 6.00 (February 2008)
This page first online: Version 4.00 (July 2003)
This page last modified: Version 6.00 (February 2008)