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Author  |
Gousev, Yu. P.; Gol'tsman, G. N.; Semenov, A. D.; Gershenzon, E. M.; Nebosis, R. S.; Heusinger, M. A.; Renk, K. F. | ||||
| Title | Broadband ultrafast superconducting NbN detector for electromagnetic radiation | Type | Journal Article | ||
| Year | 1994 | Publication | J. Appl. Phys. | Abbreviated Journal | J. Appl. Phys. |
| Volume | 75 | Issue | 7 | Pages | 3695-3697 |
| Keywords | NbN HEB | ||||
| Abstract | An ultrafast detector that is sensitive to radiation in a broad spectral range from submillimeter waves to visible light is reported. It consists of a structured NbN thin film cooled to a temperature below Tc (∼11 K). Using 20 ps pulses of a GaAs laser, we observed signal pulses with both rise and decay time of about 50 ps. From the analysis of a mixing experiment with submillimeter radiation we estimate an intrinsic response time of the detector of ∼12 ps. The sensitivity was found to be similar for the near‐infrared and submillimeter radiation. Broadband sensitivity and short response time are attributed to a quasiparticle heating effect. | ||||
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| Notes | Approved | no | |||
| Call Number | Serial | 252 | |||
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