Characterization of uncooled bolometer with vanadium tungsten oxide infrared active layer

Test bolometers are successfully fabricated and then are radiated by an IR laser source at various power levels with a chopper in a frequency range of 1-500 Hz. The responsivity and the noise of the test bolometer are measured and the detectivity is calculated. From the results, the calculated detectivity is 1.1 × 107 cm Hz1/2 W−1. Bolometer detectivity can be increased further if the noise in the device is reduced.