Abstract
To improve electron cooling, expand the dynamic range, and match the input and output impedances, series/parallel arrays of cold-electron bolometers have been developed, manufactured, and measured at temperatures from 50 to 350 mK. The bolometers are integrated into cross-slot antennas to analyze the polarization of cosmic microwave background radiation at a frequency of 345 GHz. The maximum temperature response is 6.5 μV/mK. The noise-equivalent electric power at a temperature of 300 mK is 1.2 × 10−17 W/Hz1/2.
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References
L. Kuzmin, J. Low Temp. Phys. 151, 292 (2008).
G. Chattopadhyay, F. Rice, D. Miller, et al., IEEE Microwave Guided Wave Lett. 9, 467 (1999).
M. Tarasov, M. Fominskii, A. Kalabukhov, and L. Kuzmin, Pis’ma Zh. Eksp. Teor. Fiz. 76, 588 (2002) [JETP Lett. 76, 507 (2002)].
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Original Russian Text © M. Tarasov, L. Kuzmin, N. Kaurova, 2009, published in Pis’ma v Zhurnal Éksperimental’noĭ i Teoreticheskoĭ Fiziki, 2009, Vol. 89, No. 12, pp. 742–745.