Výsledky vyhledávání - "S. N. Kaunga-Nyirenda"

Modelling the dynamics of a micro‐cavity switch

Autor: Eric C. Larkins, Andrew J. Phillips, S. N. Kaunga-Nyirenda, Hasula K. Dias, Jun Jun Lim

Publikováno v: IET Optoelectronics. 8:58-63

A model that accounts for the switching operation of a photonic crystal micro-cavity is presented. The model accounts for the bipolar drift-diffusion in the micro-cavity. The impact of surface recombination on the surface charge and carrier transport

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::df877d4abf25772691c32266f6164927
https://doi.org/10.1049/iet-opt.2013.0072

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High-power operation of coherently coupled tapered laser diodes in an external cavity (orale)

Autor: Marc Hanna, G. Erbert, Gaëlle Lucas-Leclin, Guillaume Schimmel, S. Bull, Eric C. Larkins, Martin Traub, S. Janicot, S. N. Kaunga-Nyirenda, J. Decker, I Doyen, Patrick Georges, D. Moss, Ulrich Witte, Paul Crump

Publikováno v: Proc. SPIE
Photonics West 2016, LASE, High-Power Diode Laser Technology and Applications XIV
Photonics West 2016, LASE, High-Power Diode Laser Technology and Applications XIV, Feb 2016, San Fransisco, United States. pp.97330I, ⟨10.1117/12.2211613⟩

We demonstrate a rear-side phase-locking architecture with two high-brightness diode lasers. This technique is based on the passive phase-locking of emitters in an external cavity on their rear facet, and their coherent combination on the front facet

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1af4ceb15dfca2068c20b86cc898192d
https://hal-iogs.archives-ouvertes.fr/hal-01566024

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Experimental verification of the existence of optically induced carrier pulsations in SOAs

Autor: Andrew J. Phillips, M.P. Dlubek, Eric C. Larkins, Ian Harrison, S. N. Kaunga-Nyirenda, Slawomir Sujecki

Publikováno v: Optics Communications. 283:1481-1484

Experimental investigation of the role of interband effects in four-wave mixing (FWM) in semiconductor optical amplifiers (SOAs) is reported. Carrier density pulsations (CDP) in SOAs, caused by optical wave beating, are measured in the RF domain. Thi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::658a540886d87c89e56dee0ac1682438
https://doi.org/10.1016/j.optcom.2009.11.068

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Self-consistent simulation of high-brightness diode lasers with external optical feedback

Autor: J.J. Lim, S. N. Kaunga-Nyirenda, M. A. Helal, S. Bull, Eric C. Larkins

This paper presents a model for simulating the impact of external optical feedback on large-optical cavity high-brightness diode lasers. The simulations are performed with our 2.5D simulation tool for high-brightness laser diodes. The external cavity

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9036ec90e1b0678b07ea5804f43a44fd
http://eprints.nottingham.ac.uk/35470/

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Separate phase-locking and coherent combining of two laser diodes in a Michelson cavity (Orale)

Autor: V. Vilokkinen, G. Erbert, Petteri Uusimaa, Gaëlle Lucas-Leclin, S. N. Kaunga-Nyirenda, Ioana Doyen, S. Bull, P. Melanen, Sylvie Janicot, Paul Crump, Eric C. Larkins, Marc Hanna, G. Schimmel, Patrick Georges, Lourdes Patricia Ramirez, J. Decker

Publikováno v: Proc. SPIE
Photonics West 2015, LASE, Conference on High-Power Diode Laser Technology and Applications XIII
Photonics West 2015, LASE, Conference on High-Power Diode Laser Technology and Applications XIII, Feb 2015, San Francisco, United States. pp.93480P, ⟨10.1117/12.2079314⟩

International audience; We describe a new coherent beam combining architecture based on passive phase-locking of two laser diodes in a Michelson external cavity on their rear facet, and their coherent combination on the front facet. As a proof-of-pri

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::495ea0066a7894a61bc184e04dd6455d
https://hal-iogs.archives-ouvertes.fr/hal-01256921/document

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Design optimisation of high-brightness laser diodes for external cavity operation in the BRIDLE project

Autor: P. Uusimaa, M. A. Helal, Paul Crump, V. Vilokkinen, S. N. Kaunga-Nyirenda, G. Erbert, S. Bull, Eric C. Larkins

We report on the design aspects of high performance diode lasers for application in high-brightness spectral beam combining and coherent beam combining modules. Key performance trade-offs are identified and potential solutions are explored.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::de50d36a4b9806b7156e7f3e56833a28
http://eprints.nottingham.ac.uk/35475/

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Design and simulation of high-speed nanophotonic electro-optic modulators

Autor: Gaetano Bellanca, Hasula K. Dias, Stefania Malaguti, J.J. Lim, S. N. Kaunga-Nyirenda, S. Bull, Eric C. Larkins

In this work, an ultracompact electro-optic modulator based on refractive index modulation by plasma dispersion effect in PhC all-optical gate (AOG) is proposed. The index modulation is achieved by applying a time-varying bias voltage across the elec

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::13187d1b8ee44b1bfd015752a12e38e9
http://eprints.nottingham.ac.uk/35482/

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Factors influencing brightness and beam quality of conventional and distributed Bragg reflector tapered laser diodes in absence of self-heating

Autor: Karl-Heinz Hasler, S. N. Kaunga-Nyirenda, Jörg Fricke, S. Bull, Eric C. Larkins, Jun Jun Lim

In this study, the authors examine some of the factors affecting the brightness and the beam quality of high-power tapered lasers. The large volume resonators required to achieve a high-power, high-brightness operation make the beam quality sensitive

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ab69bc52ae24d802cf5c3f5017e3045f
http://eprints.nottingham.ac.uk/35472/

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