80° specular reflectance grazing angle accessory is
designed for use in FTIR spectrophotometers for the measurement
of monolayer films on metallic substrates and for characterization
of samples that cannot be analyzed by other techniques because
they do not transmit IR radiation.
The IR beam of the spectrophotometer is reflected at the
input mirror to strike the sample at an incident angle of
80°, which is as close as can be achieved with a modestly
priced accessory to the optimal grazing angle of slightly
less than 90°. Sensitivity can be enhanced significantly
by combining this accessory with a wire grid polarizer using
the built-in slide mounts.
The accessory is pre-aligned and ready to use. The sample
is placed face down on the top surface of the accessory.
Slides are built in to each end of the accessory to permit
mounting of a polarizer. Optics are gold coated to maximize
grazing angle throughput. A gold-coated alignment
mirror is provided to enable you to take background scans
and to optimize transmission using the adjustment screws
for the mirror system.
specular reflectance accessory with polarizer mount
and alignment mirror. Specify FTIR spectrophotometer
make and model when ordering.