[19p-B303-1~18] 11.4 Analog applications and their related technologies

[19p-B303-1] Optical transition edge sensors : Wavelength dependence of system detection efficiency

〇Kaori Hattori¹, Ryo Kobayashi^1,2, Kazuki Niwa¹, Takayuki Numata¹, Shuichiro Inoue², Daiji Fukuda¹ (1.AIST, 2.Nihon Univ.)

Keywords:TES, single photon, faint light

Optical transition edge sensor (TES) detectors which can resolve an energy of a single photon have proven desirable in quantum information and biology. TESs can provide spectra ranging from near-infrared to visible region, and are expected to reveal new phenomena in biology. To obtain the spectra, wavelength dependence of the system detection efficiency should be calibrated. The dependence is caused by a cavity structure of the detector, consisting of an anti-reflection coating and a mirror. We will present the calibration using a supercontinuum laser and acousto-optic tunable filters (AOTF).