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- Otto, Ernst, 1971, et al.
(författare)
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RF characterization of cold-electron bolometer integrated with a unilateral finline
- 2012
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Ingår i: Proceedings of SPIE - The International Society for Optical Engineering. - 0277-786X .- 1996-756X. - 9780819491534 ; 8452, s. Art. no. 84521X-
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Konferensbidrag (refereegranskat)abstract
- The Cold-Electron Bolometer (CEB) is a very sensitive millimetre-wave detector with high saturation power, fast response and is easy to integrate with planar circuits. We have designed, fabricated and tested CEB detectors integrated across the slot of a unilateral finline on silicon substrate. Bolometers were fabricated using e-beam direct-write trilayer technology. The CEB performance was tested in a He3 sorption cryostat HELIOX-AC-V at a bath temperature of 310 mK. DC IV curves were measured in a current bias mode and optical response was measured by irradiating samples with signals from a black body source mounted inside the cryostat. The finline chip with CEB device was mounted in a waveguide block and connected to the readout system by bond-wires. The RF signal was focused onto the waveguide input using a horn. The signal response was obtained by comparing different IV curves in current-biased mode at different temperatures of the RF source. The response measured as a voltage difference between the IV curves taken at the source temperatures of 5 K and 20 K was about 155 μV.
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