Characterization of a High Sensitivity Composite Silicon Bolometer

We have measured the electrical and radiometric properties of a cryogenic bolometer/amplifier which is intended for use as a transfer standard in an infrared spectral comparator facility under development at the NIST. We have found its sensitivity to be similar 20 pW, instability <1%, responsivity similar 1,7 × 10 6 V/W, spatial nonuniformity <1% and nonlinearity <1% over five decades. These results show that this device can be used for its intended purpose as an IR detector transfer standard.