We have developed a method to characterize the spectral response of an uncooled microbolometer focal plane array at a broad range of terahertz (THz) frequencies (4~50 THz). This is achieved by using a spectrum-tailored blackbody radiator as a broadband THz source and measuring its spectral power with a Fourier transform infrared (FTIR) interferometer. With an additional measurement with a pyroelectric detector as a reference, the spectral response of the microbolometer relative to the pyroelectric reference is obtained with a signal-to-noise ratio of 100 over a >50 THz bandwidth.
@article{arxiv.1806.10054,
title = {Spectral Characterization of a Microbolometer Focal Plane Array at Terahertz Frequencies},
author = {D. Jang and M. Kimbrue and Y. J. Yoo and K. Y. Kim},
journal= {arXiv preprint arXiv:1806.10054},
year = {2018}
}