The Nd:YLF/Nd:YAG laser absorptance of rough metal surfaces has been investigated using 3D ray tracing simulations on computer-generated Gaussian random rough metal surfaces. The impact of multiple scattering, shadowing and Fresnel-equation based angle dependence on the overall absorption is discussed.

Topics
Computer graphics, Lasers, Chemical elements
1.
Bergström
,
D.
,
Powell
,
J.
,
Kaplan
,
A.
 (
2007
)
The absorptance of steels to Nd:YLF and Nd:YAG laser light at room temperature
,
Applied Surface Science
,
5017
–
5028
.
https://doi.org/10.1016/j.apsusc.2006.11.018
Google Scholar
 
2.
Bergström
,
D.
,
Powell
,
J.
,
Kaplan
,
A.
 (
2007
)
Absorptance of nonferrous alloys to Nd:YLF and Nd:YAG laser light at room temperature
,
Applied Optics
,
1290
–
1301
.
https://doi.org/10.1364/AO.46.001290
Google Scholar
 
3.
Tang
,
K.
,
Dimenna
,
R. A.
,
Buckius
,
R. O.
 (
1997
)
Regions of validity of the geometric optics approximation for angular scattering from very rough surfaces
,
International Journal of Heat and Mass Transfer
,
49
–
59
.
Google Scholar
 
4.
Tang
,
K.
,
Buckius
,
R. O.
 (
1997
)
The geometric optics approximation for reflection from two-dimensional random rough surfaces
,
International Journal of Heat and Mass Transfer
,
2037
–
2047
.
Google Scholar
 
5.
Modest
,
M.
 (
2003
)
Radiative Heat Transfer
,
Academic Press
.
Google Scholar
Crossref
Search ADS
 
6.
Tsang
,
L.
,
Kong
,
J.A.
,
Ding
,
K-H.
 (
2000
)
Scattering of electromagnetic waves: Theories and applications
,
Wiley Interscience
.
Google Scholar
Crossref
Search ADS
 
7.
Garcia
,
N.
,
Stoll
,
E.
 (
1984
)
Monte Carlo calculations for electromagnetic-wave scattering from random rough surfaces
,
Physical Review Letters
,
1798
–
1801
.
https://doi.org/10.1103/PhysRevLett.52.1798
Google Scholar
 
8.
Thürmer
,
G.
,
Wüthrich
,
C.
 (
1997
)
Normal computation for discrete surfaces in 3D space
,
Computer Graphics Forum
,
15
–
26
.
https://doi.org/10.1111/1467-8659.00138
Google Scholar
 
9.
Gu
,
Z.
,
Dummer
,
R.
,
Maradudin
,
A.
,
McGurn
,
A.
 (
1989
)
The experimental investigation of the opposition effect in the scattering of light from a random rough metal surface
,
Applied Optics
,
537
–
543
.
https://doi.org/10.1364/AO.28.000537
Google Scholar
 
10.
Phu
,
P.
,
Ishimaru
,
A.
,
Kuga
,
Y.
 (
1993
)
Controlled millimeter wave experiments and numerical simulations on the enhanced backscattering from one-dimensional very rough surfaces
,
Radio Science
,
533
–
548
.
https://doi.org/10.1029/93RS00362
Google Scholar
 
11.
West
,
C.
O’Donnell
,
K.
 (
1995
)
Observations of backscattering enhancement from polaritons on a rough metal surface
,
Journal of the Optical Society in America A
,
390
–
397
.
https://doi.org/10.1364/JOSAA.12.000390
Google Scholar
 
12.
Macelloni
,
G.
,
Nesti
,
G.
,
Pampaloni
,
P.
,
Sigismondi
,
S.
,
Tarch
,
D.
,
Lolli
,
S.
 (
2000
)
Experimental validation of surface scattering and emission models
,
IEEE Transactions on Geoscience and Remote Sensing
,
459
–
469
.
https://doi.org/10.1109/36.823941
Google Scholar
 
This content is only available via PDF.
© 2007 Laser Institute of America.
2007
Laser Institute of America
You do not currently have access to this content.