Zobrazeno 1 - 10
of 28
pro vyhledávání: '"P. J. Cannard"'
Autor:
Oleg Mitrofanov, Dave G. Moodie, Raimund Mueckstein, Cyril C. Renaud, Joshua R. Freeman, O. Hatem, Chris Graham, A. Giles Davies, P. J. Cannard, Alwyn J. Seeds, Michele Natrella, Edmund H. Linfield, Michael J. Robertson
Publikováno v:
IEEE Transactions on Terahertz Science and Technology. 5:260-267
Excitation of photo-current transients at semiconductor surfaces by subpicosecond optical pulses gives rise to emission of electromagnetic pulses of terahertz (THz) frequency radiation. To correlate the THz emission with the photo-excited charge dens
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1b169963e719969f56bc043502425d52
https://doi.org/10.1109/tthz.2015.2395389
https://doi.org/10.1109/tthz.2015.2395389
Using a modeling approach, InP lattice‐matched InGaAs‐based TPV cell structures were optimized as a function of the doping concentration and thickness of the active region. The devices were subsequently grown, fabricated and assessed. The modelin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e01bce7f4f47cf2c4c071ec5d1f46929
https://ora.ox.ac.uk/objects/uuid:bbc41439-03a8-4d06-b903-2e442c74e01e
https://ora.ox.ac.uk/objects/uuid:bbc41439-03a8-4d06-b903-2e442c74e01e
Autor:
Lalitha Ponnampalam, D. C. Rogers, Luka Naglic, Ian Francis Lealman, L. Johnston, Cyril C. Renaud, F Pozzi, D.G. Moodie, R. Cronin, P. J. Cannard, Alwyn J. Seeds, Michael J. Robertson, L. Pavlovic, Martyn J. Fice, M. Vidmar, C. Lynch
Publikováno v:
Journal of Lightwave Technology. 29:2229-2234
This paper presents the results from the first monolithically integrated photonic heterodyne system that allows the two optical sources to be mutually phase locked by locking to an external optical reference. High-spectral-purity signals of up to 50
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8a401fed3882b912b2222e1e69ce7f51
https://doi.org/10.1109/jlt.2011.2158186
https://doi.org/10.1109/jlt.2011.2158186
Autor:
D. C. Rogers, Michael J. Adams, T. Abraham, S Dosanjh, David G. Moodie, A. Dyson, Ian D. Henning, Yun Sun, Martin P Vaughan, P. J. Cannard, M Skuse, R. Firth
Publikováno v:
IEEE Journal of Selected Topics in Quantum Electronics. 17:202-209
We present experimental results on the performance of antenna-integrated photodiodes intended for use as photomixers to provide a tunable broadband source of terahertz (THz) radiation. In a balanced strain-absorber structure, we show that the introdu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eccf330fbc916e8b74f3f32348657703
https://doi.org/10.1109/jstqe.2010.2049196
https://doi.org/10.1109/jstqe.2010.2049196
Autor:
S Dosanjh, Ian D. Henning, M Skuse, P. J. Cannard, D.C. Rogers, Yun Sun, Michael J. Adams, R. Firth, D.G. Moodie
Publikováno v:
IEEE Journal of Quantum Electronics. 46:1498-1505
We present design and experimental results on novel antenna-integrated edge-coupled photodiodes, examining particularly their suitability as photomixers for broadband terahertz sources. We show that a simple “stub” detector positioned at the edge
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7d63ad84e1c46a49f73c4df470f0c77f
https://doi.org/10.1109/jqe.2010.2052353
https://doi.org/10.1109/jqe.2010.2052353
Autor:
Stephen J. Sweeney, Ian Francis Lealman, Xin Chen, Igor P. Marko, P. J. Cannard, Sayid A. Sayid, L. Rivers
Publikováno v:
IEEE Journal of Quantum Electronics. 46:700-705
We have investigated the threshold current Ith and differential quantum efficiency as the function of temperature in InGaAlAs/InP multiple quantum well (MQWs) buried heterostructure (BH) lasers. We find that the temperature sensitivity of ith is due
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b2796ec32b7c58dd4e1a7f547065480c
https://doi.org/10.1109/jqe.2009.2039117
https://doi.org/10.1109/jqe.2009.2039117
Autor:
Russell M. Gwilliam, Alwyn J. Seeds, S. Gregoire, S. Cole, P. J. Cannard, Ian Francis Lealman, Marianna Pantouvaki, Cyril C. Renaud, R. Moore
Publikováno v:
IEEE Journal of Quantum Electronics, 43 (11-12) 998-1005. (2007)
We report the first demonstration of a monolithic optical-frequency comb generator. The device is based on multi-section quaternary/quaternary eight-quantum-well InP-InGaAsP material in a frequency-modulated (FM) laser design. The modulation is gener
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::09d957d0558a678ef0c3c9ad2c220e31
https://doi.org/10.1109/jqe.2007.904522
https://doi.org/10.1109/jqe.2007.904522
Autor:
D.G. Moodie, Martyn J. Fice, S. Chowdhury, P. J. Cannard, Reshma A. Mohandas, Edmund H. Linfield, Joshua R. Freeman, Alwyn J. Seeds, Mark C. Rosamond, Michael J. Robertson, A. Giles Davies, Paul Dean, Lalitha Ponnampalam
Publikováno v:
2015 40th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz).
We demonstrate the generation of continuous wave terahertz radiation from Fe-doped InGaAs and Fe-doped InGaAsP photomixers grown by Metal Organic Chemical Vapor Deposition (MOCVD), using a pair of 1550 nm diode lasers. A bandwidth of > 2.4 THz is obt
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f6be63f00a655630f74ecfb1c66676d9
https://doi.org/10.1109/irmmw-thz.2015.7327846
https://doi.org/10.1109/irmmw-thz.2015.7327846
Publikováno v:
SEMICONDUCTOR SCIENCE AND TECHNOLOGY. 28(1)
We report the fabrication and characterization of lattice matched single junction InGaAs thermophotovoltaic cells grown on InP substrates with an EQE >90% over a broad spectral range. The I–V characteristics of the cells are examined for a range of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::094ceac8ff7edf0845a713aee4239578
http://ora.ox.ac.uk/objects/uuid:9879859a-ea65-4ca3-b920-a2ce1befc0f2
http://ora.ox.ac.uk/objects/uuid:9879859a-ea65-4ca3-b920-a2ce1befc0f2
Autor:
Michael J. Robertson, Martyn J. Fice, Colm Lynch, Alwyn J. Seeds, R. Cronin, Ian Francis Lealman, Matjaz Vidmar, Robert Steed, D. C. Rogers, P. J. Cannard, David G. Moodie, Lilianne Johnston, Cyril C. Renaud, L. Pavlovic, F Pozzi, Luka Naglic
Publikováno v:
Optics express. 19(21)
We present results for an heterodyne optical phase-lock loop (OPLL), monolithically integrated on InP with external phase detector and loop filter, which phase locks the integrated laser to an external source, for offset frequencies tuneable between
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::edf507dfe3230c9607bf77e106ed811d
https://pubmed.ncbi.nlm.nih.gov/21997015
https://pubmed.ncbi.nlm.nih.gov/21997015