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Nanobolometers for THz Photon Detection

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3 Author(s)
Boris S. Karasik ; Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA ; Andrei V. Sergeev ; Daniel E. Prober

This paper reviews the state of rapidly emerging terahertz hot-electron nanobolometers (nano-HEB), which are currently among of the most sensitive radiation power detectors at submillimeter wavelengths. With the achieved noise equivalent power close to 10-19 W/Hz1/2 and potentially capable of approaching NEP ~ 10-20 W/Hz1/2, nano-HEBs are very important for future space astrophysics platforms with ultralow submillimeter radiation background. The ability of these sensors to detect single low-energy photons with high dynamic range opens interesting possibilities for quantum calorimetry in the midinfrared and even in the far-infrared parts of the electromagnetic spectrum. We discuss the competition in the field of ultrasensitive detectors, the physics and technology of nano-HEBs, recent experimental results, and perspectives for future development.

Published in:

IEEE Transactions on Terahertz Science and Technology  (Volume:1 ,  Issue: 1 )