A Nitrogen Cryostat with Adjustable Temperature and Cold Loading of Samples for the Measurement of Optical Spectra

— A cold-loaded cryostat was designed to measure the optical spectra of thermally unstable samples. The temperature stabilization system with a resistive heater provides temperature control in the range of 80–270 K with an accuracy of ±0.3 K. The cryostat was used to measure the Raman spectra of molecular hydrides of silica glass at different temperatures.