Cryogenic property test platform

A cryogenic property test platform for testing physical properties of samples at cryogenic temperatures, comprising:

• a vacuum chamber including body and lid and the lid including an introduction viewport, an exit viewport, and a centered viewport;
• a frame including a plurality of rods and a plurality of rings secured to the plurality of rods, wherein the frame fits within the body;
• a cold finger having a column, no charcoal arrays, and an internal cryogen loop;
• band heaters attached to the column;
• a sample stage in alignment with the center viewpoint and including a sample block for a sample to be placed thereon and the sample block having a hole therein, an insulator adjacent the sample block and in contact with the cold finger, a parabolic mirror to direct light through the center viewport, a cold finger temperature diode inserted into the hole, a collar, and a light funnel between the collar and the insulator block, wherein both the collar and funnel have apertures to permit a second diode to be placed in the chamber and measure temperature effects in comparison to the cold finger temperature diode;
• a first mirror and second mirror both secured to one of the rings on the frame, wherein the first mirror is positioned to reflect a laser beam passing through the introduction viewport into a sample on the sample block and then reflecting off the second mirror into passing through the exit viewport;
• and
• a first light meter positioned above the centered viewpoint and a second light meter positioned at the exit viewpoint to measure the power transmitted through the sample and the power emitted from the sample, respectively.