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Marsili, Francesco; Najafi, Faraz; Herder, Charles; Berggren, Karl K. |
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Electrothermal simulation of superconducting nanowire avalanche photodetectors |
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2011 |
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Applied Physics Letters |
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Appl. Phys. Lett. |
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98 |
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9 |
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3 |
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SNAP |
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We developed an electrothermal model of NbN superconducting nanowire avalanche photodetectors (SNAPs) on sapphire substrates. SNAPs are single-photon detectors consisting of the parallel connection of N superconducting nanowires. We extrapolated the physical constants of the model from experimental data and we simulated the time evolution of the device resistance, temperature and current by solving two coupled electrical and thermal differential equations describing the nanowires. The predictions of the model were in good quantitative agreement with the experimental results. |
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RPLAB @ gujma @ |
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658 |
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Zwiller, V.; Aichele, T.; Seifert, W.; Persson, J.; Benson, O. |
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Title |
Generating visible single photons on demand with single InP quantum dots |
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Journal Article |
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2003 |
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Applied Physics Letters |
Abbreviated Journal |
Appl. Phys. Lett. |
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82 |
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10 |
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1509-1511 |
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single photon, quantum dot, InP |
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0003-6951 |
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503 |
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Rasulova, G. K.; Brunkov, P. N.; Pentin, I. V.; Egorov, A. Y.; Knyazev, D. A.; Andrianov, A. V.; Zakhar’in, A. O.; Konnikov, S. G.; Gol’tsman, G. N. |
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A weakly coupled semiconductor superlattice as a potential for a radio frequency modulated terahertz light emitter |
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2012 |
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Appl. Phys. Lett. |
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Appl. Phys. Lett. |
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100 |
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13 |
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131104 (1 to 4) |
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semiconductor superlattice |
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The bolometer response to THz radiation from a weakly coupled GaAs/AlGaAs superlattice biased in the self-oscillations regime has been observed. The bolometer signal is modulated with the frequency equal to the fundamental frequency of superlattice self-oscillations. The frequency spectrum of the bolometer signal contains higher harmonics whose frequency is a multiple of fundamental frequency of self-oscillations.
This work was supported by State Contracts Nos. 16.740.11.0044 and 16.552.11.7002 of Ministry of Education and Science of the Russian Federation. Structural characterization was made on the equipment of the Joint Research Centre «Material science and characterization in advanced technology» (Ioffe Institute, St. Petersburg, Russia). |
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1379 |
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Fetterman, H. R.; Tannenwald, P. E.; Clifton, B. J.; Parker, C. D.; Fitzgerald, W. D.; Erickson, N. R. |
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Far-ir heterodyne radiometric measurements with quasioptical Schottky diode mixers |
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1978 |
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Appl. Phys. Lett. |
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Appl. Phys. Lett. |
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33 |
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2 |
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151-154 |
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Schottky |
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Frequency countings close to a phase locked zone in an electronic receiver show a 1/f power spectral density. The noise scaling versus the frequency deviation and the open loop gain are found from Adler's model of the phase locked loop. This fully agrees with experiments performed at 5 MHz on a receiver with a Schottky diode mixer and a low pass filter. The 1/f amplitude and frequency noise due to the whole set of (sub)harmonics is explained from a nonlinear mapping, with a coupling coefficient related to the structure of prime numbers. |
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587 |
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Walther, Christoph; Scalari, Giacomo; Faist, Jerome; Beere, Harvey; Ritchie, David |
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Low frequency terahertz quantum cascade laser operating from 1.6 to 1.8 THz |
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2006 |
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Applied Physics Letters |
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Appl. Phys. Lett. |
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89 |
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231121(1-3) |
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QCL, 360 uW at 1.6 THz |
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The authors report a GaAs/Al0.1Ga0.9As quantum cascade laser based on a bound-to-continuum transition optimized for low frequency operation. High tunability of the gain curve is achieved by the Stark effect and laser emission is measured between 1.6 and 1.8 THz. Pulsed mode operation up to 95 K and continuous wave operation up to 80 K are reported. The dynamical range in current is as high as 43%. |
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