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Fully lithographic fiber-coupled cryogenic radiometer for picowatt powers



Nathan A. Tomlin, John H. Lehman, Sae Woo Nam


A new type of absolute cryogenic radiometer has been fabricated at the microscale level for direct substitution optical fiber power measurements. It consists of three parts: an absorber, electrical heater, and thermometer all on a single micro-machined membrane. The device has been shown to be sensitive to power levels down to 1 pW.
Proceedings Title
Metrologia Proceedings
Conference Dates
September 19-23, 2011
Conference Location
Wailea, Maui, HI
Conference Title


transition-edge sensor, TES, SQUID, radiometer, cryogenic, absolute cryogenic radiometer, ACR, black silicon, membrane, optical fiber, fiber, micro-machined


Tomlin, N. , Lehman, J. and Nam, S. (2011), Fully lithographic fiber-coupled cryogenic radiometer for picowatt powers, Metrologia Proceedings, Wailea, Maui, HI (Accessed June 5, 2023)
Created September 19, 2011, Updated February 19, 2017