Search

Your search keyword '"Degl'Innocenti, Riccardo"' showing total 7 results
Start Over Author "Degl'Innocenti, Riccardo" Publisher aip publishing
7 results on '"Degl'Innocenti, Riccardo"'

1. Ultrafast modulation of a THz metamaterial/graphene array integrated device

Author

Zaman, Abdullah M., primary, Saito, Yuichi, additional, Lu, Yuezhen, additional, Kholid, Farhan Nur, additional, Almond, Nikita W., additional, Burton, Oliver J., additional, Alexander-Webber, Jack, additional, Hofmann, Stephan, additional, Mitchell, Thomas, additional, Griffiths, Jonathan D. P., additional, Beere, Harvey E., additional, Ritchie, David A., additional, Mikhaylovskiy, Rostislav V., additional, and Degl'Innocenti, Riccardo, additional

Published
2022
Full Text
View/download PDF

2. External cavity terahertz quantum cascade laser with a metamaterial/graphene optoelectronic mirror

Author

Almond, Nikita W., primary, Qi, Xiaoqiong, additional, Degl'Innocenti, Riccardo, additional, Kindness, Stephen J., additional, Michailow, Wladislaw, additional, Wei, Binbin, additional, Braeuninger-Weimer, Philipp, additional, Hofmann, Stephan, additional, Dean, Paul, additional, Indjin, Dragan, additional, Linfield, Edmund H., additional, Davies, A. Giles, additional, Rakić, Aleksandar D., additional, Beere, Harvey E., additional, and Ritchie, David A., additional

Published
2020
Full Text
View/download PDF

7. Fast terahertz imaging using a quantum cascade amplifier

Author

D. S. Jessop, Harvey E. Beere, Riccardo Degl'Innocenti, A. Klimont, Yuan Ren, David A. Ritchie, R. Wallis, Degl'Innocenti, Riccardo [0000-0003-2655-1997], Beere, Harvey [0000-0001-5630-2321], Ritchie, David [0000-0002-9844-8350], and Apollo - University of Cambridge Repository

Subjects
Physics, Cascade amplifier, Photon, Physics and Astronomy (miscellaneous), business.industry, Terahertz radiation, Amplifier, Physics::Optics, Differential amplifier, Laser, law.invention, Optics, 4009 Electronics, Sensors and Digital Hardware, Cascade, law, Optoelectronics, business, Lasing threshold, 51 Physical Sciences, 40 Engineering
Abstract

A terahertz (THz) imaging scheme based on the effect of self-mixing in a 2.9 THz quantum cascade (QC) amplifier has been demonstrated. By coupling an antireflective-coated silicon lens to the facet of a QC laser, with no external optical feedback, the laser mirror losses are enhanced to fully suppress lasing action, creating a THz QC amplifier. The addition of reflection from an external target to the amplifier creates enough optical feedback to initiate lasing action and the resulting emission enhances photon-assisted transport, which in turn reduces the voltage across the device. At the peak gain point, the maximum photon density coupled back leads to a prominent self-mixing effect in the QC amplifier, leading to a high sensitivity, with a signal to noise ratio up to 55 dB, along with a fast data acquisition speed of 20 000 points per second.

Published
2015

Catalog

Books, media, physical & digital resources
See catalog results