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Author  |
Floet D. W.; Gao J. R.; Klapwijk T. M.; de Korte P. A. J. | ||||
| Title | Bias Dependence of the Thermal Time Constant in Nb Superconducting Diffusion-Cooled HEB Mixers | Type | Journal Article | ||
| Year | 2000 | Publication | Appl. Phys. Lett. | Abbreviated Journal | Appl. Phys. Lett. |
| Volume | 77 | Issue | Pages | 1719 | |
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| Abstract | We present an experimental study of the intermediate frequency bandwidth of a Nb diffusion-cooled hot-electron bolometer mixer for different bias voltages. The measurements show that the bandwidth increases with increasing voltage. Analysis of the data reveals that this effect is mainly caused by a decrease of the intrinsic thermal time of the mixer and that the effect of electrothermal feedback through the intermediate frequency circuit is small. The results are understood using a qualitative model, which takes into account the different effective diffusion constants in the normal and superconducting domains. | ||||
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| Notes | Approved | no | |||
| Call Number | RPLAB @ atomics90 @ | Serial | 971 | ||
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