| Records |
| Author |
Schwarz, Brent |
Title  |
Lidar: Mapping the world in 3D |
Type |
Journal Article |
| Year |
2010 |
Publication |
Nature Photonics |
Abbreviated Journal |
Nat. Photon. |
| Volume |
4 |
Issue |
7 |
Pages |
429-430 |
| Keywords |
LIDAR |
| Abstract |
A high-definition LIDAR system with a rotating sensor head containing 64 semiconductor lasers allows the efficient generation of 3D environment maps at unprecedented levels of detail. |
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RPLAB @ gujma @ |
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696 |
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| Author |
Lobanov, Yury V.; Tong, Cheuk-yu E.; Hedden, Abigail S.; Blundell, Raymond; Gol’tsman, Gregory N. |
| Title |
Microwave-assisted measurement of the frequency response of terahertz HEB mixers with a Fourier transform spectrometer |
Type |
Conference Article |
| Year |
2010 |
Publication |
Proc. 21th Int. Symp. Space Terahertz Technol. |
Abbreviated Journal |
Proc. 21th Int. Symp. Space Terahertz Technol. |
| Volume |
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Issue |
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Pages |
420-423 |
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| Abstract |
We describe a novel method of operation of the HEB direct detector for use with a Fourier Transform Spectrometer. Instead of elevating the bath temperature, we have measured the RF response of waveguide HEB mixers by applying microwave radiation to select appropriate bias conditions. In our experiment, a microwave signal is injected into the HEB mixer via its IF port. By choosing an appropriate injection level, the device can be operated close to the desired operating point. Furthermore, we have shown that both thermal biasing and microwave injection can reproduce the same spectral response of the HEB mixer. However, with the use of microwave injection, there is no need to wait for the mixer to reach thermal equilibrium, so characterisation can be done in less time. Also, the liquid helium consumption for our wet cryostat is also reduced. We have demonstrated that the signal- to-noise ratio of the FTS measurements can be improved with microwave injection. |
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1394 |
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| Author |
Lobanov, Y. V.; Tong, Cheuk-Yu E.; Hedden, A. S.; Blundell, R.; Gol'tsman, G. N. |
| Title |
Microwave-assisted슠measurement슠of the슠frequency슠response슠of슠terahertz슠HEB슠mixers슠with a슠fourier슠transform슠spectrometer |
Type |
Conference Article |
| Year |
2010 |
Publication |
21st International Symposium on Space Terahertz Technology |
Abbreviated Journal |
21st ISSTT |
| Volume |
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Issue |
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Pages |
420-423 |
| Keywords |
HEB mixer |
| Abstract |
We describe a novel method of operation of the HEB direct detector for use with a Fourier Transform Spectrometer. Instead of elevating the bath temperature, we have measured the RF response of waveguide HEB mixers by applying microwave radiation to select appropriate bias conditions. In our experiment, a microwave signal is injected into the HEB mixer via its IF port. By choosing an appropriate injection level, the device can be operated close to the desired operating point. Furthermore, we have shown that both thermal biasing and microwave injection can reproduce the same spectral response of the HEB mixer. However, with the use of microwave injection, there is no need to wait for the mixer to reach thermal equilibrium, so characterisation can be done in less time. Also, the liquid helium consumption for our wet cryostat is also reduced. We have demonstrated that the signalto-noise ratio of the FTS measurements can be improved with microwave injection. |
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RPLAB @ gujma @ |
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725 |
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| Author |
Diana Prado Lopes Aude |
| Title |
Modeling superconductors using surface impedance technique |
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Book Whole |
| Year |
2010 |
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MIT |
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MIT |
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homogeneous isotropic BCS superconductor complex conductivity superconductor surface impedance |
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no |
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938 |
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| Author |
Doerr, C.R.; Zhang, C.; Winzer, P.J. |
| Title |
Monolithic InP multi-wavelength coherent receiver |
Type |
Conference Article |
| Year |
2010 |
Publication |
Conference on optical fiber communication, collocated national fiber optic engineers conference |
Abbreviated Journal |
Conf. OFC/NFOEC |
| Volume |
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Issue |
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Pages |
1-3 |
| Keywords |
InP balanced detector, waveguide grating, polarization splitter, from chiralphotonics |
| Abstract |
We propose and demonstrate a novel four-channel monolithic polarization-diversity dual-quadrature coherent receiver with balanced detection in InP. It uses an interleave-chirped arrayed waveguide grating that acts simultaneously as a demultiplexer, 90° hybrid, and polarization splitter. |
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851 |
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