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.
REFERENCES
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
.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
.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
.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
.5.
6.
Tsang
, L.
, Kong
, J.A.
, Ding
, K-H.
(2000
) Scattering of electromagnetic waves: Theories and applications
, Wiley Interscience
.7.
Garcia
, N.
, Stoll
, E.
(1984
) Monte Carlo calculations for electromagnetic-wave scattering from random rough surfaces
, Physical Review Letters
, 1798
–1801
.8.
Thürmer
, G.
, Wüthrich
, C.
(1997
) Normal computation for discrete surfaces in 3D space
, Computer Graphics Forum
, 15
–26
.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
.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
.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
.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
.
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© 2007 Laser Institute of America.
2007
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