High-temperature setup for infrared reflection spectroscopy.

We have designed an oven for optical reflection measurements at temperatures as high as 1000 K. The compact setup can be attached to any Fourier-transform infrared spectrometer using a microscope. The details of the layout, operation, and performance are discussed as well as ways for reference measurements and data correction. Finally, the high-temperature setup is utilized to determine the infrared reflectivity of tungsten up to T = 1000 K, which can serve as a reference mirror for future experiments.