Absorptance measurements of metal mirrors at glancing incidence

Journal Article · Wed Oct 15 00:00:00 EDT 1986 · Appl. Opt.; (United States)

DOI:https://doi.org/10.1364/AO.25.003740· OSTI ID:5164197

Kimura, W D; Ford, D H

The absorptance characteristics of bare silver, aluminum, gold, copper, and molybdenum mirrors at angles of incidence from 0 to 89/sup 0/ are presented. The angle-dependent absorptance measurements are performed using a photoacoustic calorimetry technique. Absolute absorptance is determined using a laser energy ratiometer. Data are obtained for both s-and p- polarization light at two wavelengths, 0.5145 and 10.6 ..mu..m. It is found that the Fresnel theory for bare metal surfaces does not always reliably predict the measured absorptance at high angles of incidence.

• Research Organization: Spectra Technology, Inc., 2755 Northup Way, Bellevue, Washington 9668004-1496
• OSTI ID: 5164197
• Journal Information: Appl. Opt.; (United States), Journal Name: Appl. Opt.; (United States) Vol. 25:20; ISSN APOPA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
ABSORPTIVITY
ALUMINIUM
COPPER
ELEMENTS
GOLD
INCIDENCE ANGLE
METALS
MIRRORS
MOLYBDENUM
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
POLARIZATION
REFLECTIVITY
SILVER
SURFACE PROPERTIES
TRANSITION ELEMENTS