High pressure cell for magneto-optical experiments

Abstract

High pressure equipment designed for low temperature magneto-optical experiments is described. The piston and cylinder type of pressure vessel was adapted to allow photocurrent experiments to be carried out at low temperatures and high magnetic fields. With a sapphire window the cell can be used in the far infrared region (3 mm-25 mu m wavelength) and in the near infrared at wavelengths shorter than 5.5 mu m. Hydrostatic pressures up to 1.8 GPa can be achieved at 4.2K. A suitable choice of window material allows the cell to be used in all spectral regions from far infrared to ultraviolet and over a temperature range from liquid helium to 500K. The use of a carbon bolometer allows transmission experiments to be performed.