Company presentation Closed Joint Stock Company Superconducting - - PowerPoint PPT Presentation
Company presentation Closed Joint Stock Company Superconducting nanotechnology SCONTEL 1 About us SCONTEL was founded in 2004 as a spinoff of the Radio-Physics Research&Education Center (RPhREC) (group leader Prof. Gregory Goltsman )
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Closed Joint Stock Company
The commercial activity of company based on the results of the RPhREC’s research in the field of hot-electron phenomena in ultra thin superconducting films and its application to practical superconducting devices.
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SCONTEL was founded in 2004 as a spinoff of the Radio-Physics Research&Education Center (RPhREC) (group leader Prof. Gregory Gol’tsman) at the Department of Physics of Moscow State Pedagogical University.
Films from NbN or MoRe are used
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Superconducting Single Photon Detectors Detectors for THz and Middle IR ranges
5 Cryogenic Insert for a standard liquid helium storage Dewar Liquid Helium Cryostat Closed Cycle Refrigerator (Cryogenic Free)
Superconducting Single Photon Detectors Detectors for THz and Middle IR ranges
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Sensitive element of SSPD Optical coupling
Standard single-mode optical fibers: Nufern 780-HP, Corning SMF 28, ZBLAN.
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Possible applications:
measurements
measurements
analysis (PICA)
fluorescence spectroscopy
photon flux
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Advantages of SSPD:
infrared ranges (overlapping unavailable for the APD range);
(below 10 cps)
25%);
mode;
systems are available;
input;
The type of detector Working temperature, К Quantum efficiency, QE, % Time resolution, t, ps Dark counts, D, Hz Quality parameter, H Dead time, ns Photo Multiplier Tube
200 2 300 2105 3.33102 100
InGaAs photodiode (APD)
200 10 370 91 2.97105 0.1
Frequency up- conversion detectors
300 2 40 2104 2.5104 100
Transition edge sensor (TES)
0.1 50 100 3 1.67106 1
SSPD
2 25 25 10 5107 2
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For λ = 1,55 µm
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Normally operating nMOS transistor emits near IR photons (0.9-1.4um) when current passes through the channel. Time-correlated photon emission detection measures transistor switching time. www.research.ibm.com/topics/serious/c hip/images/
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Hiroki Takesue, Sae Woo Nam, Qiang Zhang, et. al., Nature photonics, Vol.1., 343-348, June, 2007.
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Markus Marksteiner, Philipp Haslinger, Michele Sclafani, Hendrik Ulbricht, Markus Arndt, Faculty of Physics, University of Vienna
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A typical individual peak, which we attribute to the detection of neutral molecule hitting the chip. The signal was recorded with a 20x20 m SSPD chip after 20 db amplification. Bias current: 19.5 A.
Electron Bolometer (SHEB) technology
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Any radiation impinging on the absorptive element raises its temperature what destruct superconductive state of film and leads to voltage’s change.
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Typical frequency dependence of the noise equivalent power (NEP) for the three types of receiver systems.
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Type
1 1a 2 2a 3 3a
Frequency range, THz
0.1-6 1-40 20-100
Noise equivalent power (NEP), W×Hz-1/2
5-7×10-14 3-5×10-13 1-2×10-11 6-8×10-11 1-2×10-12 4-5×10-12
Response time, ns
1 0.05 1 0.05 1 0.05
Dynamic range, µW
0.1 50 2
Bandwidth of amplifier, MHz
0.01-200 1-3500 0.01-200 1-3500 0.01-200 1-3500
Possible applications:
(including space-based)
interferometry
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Advantages:
equivalent power (NEP) down to 10-14 W·Hz-1/2)
from 0.1 THz to 70 THz
(from nano- to picoseconds THz pulses)
(beam pattern F/3 to F/∞ (collimated beam))
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Semiconductors THz receivers SCONTEL HEB Neceivers
Detector type
HgCdTe InSb Ge:Ga Si NbN MoRe
Operation temperature
77 K 4 K 4 K 4 K 4 K 4 K
Wavelength range
4÷20 m
bandwidth ~30%
0.6÷5 mm 60÷120 m 15÷2000 m 3÷1000 m 3÷1000 m
Response time
~1 s ~ 1 s ~ 10 s ~ 200 s ~ 50 ps ~ 1 ns
NEP, W/Hz0.5
~10-12 ~10-12 ~10-12 ~10-13 <3∙10-13 <5∙10-14
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10-meter the Heinrich Hertz Telescope (HHT) on Mt. Graham (Arizona, USA).
http://www.cfa.harvard.edu/srlab/rxlabHEB.html http://www.cfa.harvard.edu/srlab/secure/rxlabTerahertzScience.html First fully-resolved ground-based detection of a terahertz spectral line from an astronomical source (CO 9-8 in Orion BN/KL) was obtained with the HEB receiver (January 2000). The first ground- based heterodyne detection in the terahertz band.
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Millimetron
12-m diameter space telescope Heterodyne receivers in 1- 6 THz range
SOFIA
2.7-m diameter stratospheric telescope Heterodyne receivers in the ranges 1.6-1.9 THz, 2.4-2.7 THz, 4.7 THz
The GBW of the HEB receiver installed at the HERSHEL telescope does not exceed 4 GHz. Future heterodyne missions will require a GBW of 8 GHz. PDHEBs already have a GBW of 6.5 GHz and potentially can have a GBW of up to 12 GHz.
HERSCHEL
3.5-m diameter space telescope Bands 6 and 7 of the HIFI: 1.41 THz – 1.91 THz
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THz imagine of hidden in the shoes ceramic knife and explosive. Thermovisors of THz range able to distinguish
clothes: plastic and metallic weapon, explosion materials, drugs, etc. Fast identification of chemical components is possible in THz range even in close package (for example box on mail post).
Full-support service (installation, operation training, technical support) Easy to integrate with LabView and other standard environment Optimization of receiver system characteristics to the customer needs One, two, or multi- channel systems are available Local or remote control
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Europe Asia North America
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