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| WELL2848
: Varian CARY-5000 Uv-Vis-NIR w/ DRA-1800 150-mm InGaAs Integrating Sphere + Variable Angle SRA |
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This Varian Cary-5000 Research-Grade UV-VIS-
NIR Spectrophotometer has equipped with an
option of DRA-1800 150-mm Ø InGaAs
Integrating Sphere(190 nm ~1,800 nm) for high accuracy
transmittance & reflectance measurements of
Optics/thin film/lens/AR-filter testing.
[ InGaAs VS. PbS Integrating Sphere
Comparisons]
Enhanced Sensitivity: The signal to
noise (S/N) above 860nm in the NIR is
significantly different that the InGaAs
translates to greater sensitivity allowing
the analysis of smaller samples. Greater
sensitivity can be traded for analysis
speed. High Absorbance Measurement for
Dark Sample Analysis: The InGaAs sphere
allows the superior linearity and that is
not possible on the PbS sphere.
[ Variable Angle Specular Reflectance
Accessory (VASRA) ]
The Cary VASRA provides the ability to
automatically measure the specular
reflectance of a sample surface at angles of
incidence ranging from 20 to 70 degrees. The
VASRA is ideal for measuring the reflectance
of materials at various angles and
wavelengths(190 nm ~3,100 nm), characterizing mirrors and
determining the refractive index and
thickness of thin films. The
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