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Blue Lasers for Optical Wireless Communications
Scott Watson;Stphen P. Najda;Piotr Perlin;Tadek Suski;Lucja Marona;Mike Leszczynski;Szymon Stanczyk;Dario Schiavon;Thomas J. Slight;Anthony E. Kelly
2023 23rd International Conference on Transparent Optical Networks (ICTON)
Year: 2023 | Conference Paper |
Distributed feedback (DFB) lasers based on gallium nitride (GaN) have been fabricated and characterised for use in optical wireless communications. These devices find applications in free space visible light communication (VLC), but also play a fundamental role in underwater and space environments due to the low loss transmission at blue wavelengths. Devices have shown Gbit/s performance making th...Show More
Dynamic Device Characteristics and Linewidth Measurement of InGaN/GaN Laser Diodes
Steffan Gwyn;Scott Watson;Thomas Slight;Martin Knapp;Shaun Viola;Pavlo Ivanov;Weikang Zhang;Amit Yadav;Edik Rafailov;Mohsin Haji;Kevin E Doherty;Szymon Stanczyk;Szymon Grzanka;Piotr Perlin;Stephen P Najda;Mike Leszczyski;Anthony E Kelly
We report on the characterization and analysis of a GaN-based distributed feedback laser diode (DFB-LD) with 3rd-order laterally etched sidewall gratings centered at a wavelength of 420 nm. We also compare the device parameters with two commonly used Fabry-Perot (FP) devices operating at 450 nm and 520 nm. Intrinsic properties of the devices were extracted, including damping factor, carrier and ph...Show More
Dynamic Device Characteristics and Linewidth Measurement of InGaN/GaN Laser Diodes
Steffan Gwyn;Scott Watson;Thomas Slight;Martin Knapp;Shaun Viola;Pavlo Ivanov;Weikang Zhang;Amit Yadav;Edik Rafailov;Mohsin Haji;Kevin E Doherty;Szymon Stanczyk;Szymon Grzanka;Piotr Perlin;Stephen P Najda;Mike Leszczyski;Anthony E Kelly
Distributed Feedback Lasers for Quantum Cooling Applications
Scott Watson;Steffan Gwyn;Eugenio Di Gaetano;Euan McBrearty;Thomas J. Slight;Martin Knapp;Szymon Stanczyk;Szymon Grzanka;Amit Yadav;Kevin E. Docherty;Edik Rafailov;Piotr Perlin;Steve Najda;Mike Leszczynski;Mohsin Haji;Marc Sorel;Douglas J. Paul;Anthony E. Kelly
2020 22nd International Conference on Transparent Optical Networks (ICTON)
Year: 2020 | Conference Paper |
Cited by: Papers (1)
There is an ever-growing need for compact sources which can be used for the cooling process in high accuracy atomic clocks. Current systems make use of large, expensive lasers which are power-hungry and often require frequency doubling in order to hit the required wavelengths. Distributed feedback (DFB) lasers have been fabricated at a number of key wavelengths which would allow chip scale atomic ...Show More
Distributed Feedback Lasers for Quantum Cooling Applications
Scott Watson;Steffan Gwyn;Eugenio Di Gaetano;Euan McBrearty;Thomas J. Slight;Martin Knapp;Szymon Stanczyk;Szymon Grzanka;Amit Yadav;Kevin E. Docherty;Edik Rafailov;Piotr Perlin;Steve Najda;Mike Leszczynski;Mohsin Haji;Marc Sorel;Douglas J. Paul;Anthony E. Kelly
Year: 2020 | Conference Paper |
Single Frequency Blue Lasers
Steffan Gwyn;Scott Watson;Martin Knapp;Shaun Viola;Giovanni Giuliano;Thomas J. Slight;Szymon Stanczyk;Szymon Grzanka;Conor Robinson;Amit Yadav;Kevin E. Docherty;Edik Rafailov;Piotr Perlin;Stephen P. Najda;Mike Leszczynski;Mohsin Haji;Anthony E. Kelly
2019 IEEE 2nd British and Irish Conference on Optics and Photonics (BICOP)
Year: 2019 | Conference Paper |
Cited by: Papers (1)
Owing to increased performance capabilities over their LED counterparts, Gallium Nitride (GaN) based Laser Diodes (LDs) are becoming more prevalent in several applications, including lighting, visible light communications, medical spectroscopy, and atom cooling. For many of these applications, a tunable, precise wavelength is necessary such that chromatic aberrations are minimized and that specifi...Show More
Single Frequency Blue Lasers
Steffan Gwyn;Scott Watson;Martin Knapp;Shaun Viola;Giovanni Giuliano;Thomas J. Slight;Szymon Stanczyk;Szymon Grzanka;Conor Robinson;Amit Yadav;Kevin E. Docherty;Edik Rafailov;Piotr Perlin;Stephen P. Najda;Mike Leszczynski;Mohsin Haji;Anthony E. Kelly
Year: 2019 | Conference Paper |
Applications of Single Frequency Blue Lasers
Scott Watson;Steffan Gwyn;Martin Knapp;Shaun Viola;Giovanni Giuliano;Thomas J. Slight;Szymon Stanczyk;Szymon Grzanka;Conor Robinson;Amit Yadav;Kevin E. Docherty;Edik Rafailov;Piotr Perlin;Stephen P. Najda;Mike Leszczynski;Mohsin Haji;Anthony E. Kelly
2019 21st International Conference on Transparent Optical Networks (ICTON)
Year: 2019 | Conference Paper |
Gallium nitride (GaN) sources are becoming a regular part of today's world and are now key devices for lighting infrastructures, communications systems and quantum applications, amongst others. In particular, many applications have seen the shift from LEDs to laser diodes to make use of higher powers, higher bandwidths and increased transmission distances. Laser communication systems are well esta...Show More
Applications of Single Frequency Blue Lasers
Scott Watson;Steffan Gwyn;Martin Knapp;Shaun Viola;Giovanni Giuliano;Thomas J. Slight;Szymon Stanczyk;Szymon Grzanka;Conor Robinson;Amit Yadav;Kevin E. Docherty;Edik Rafailov;Piotr Perlin;Stephen P. Najda;Mike Leszczynski;Mohsin Haji;Anthony E. Kelly
Year: 2019 | Conference Paper |
InGaN/GaN Laser Diodes and their Applications
Scott Watson;Steffan Gwyn;Shaun Viola;Giovanni Giuliano;Thomas J. Slight;Szymon Stanczyk;Szymon Grzanka;Amit Yadav;Duncan Rowe;Leslie Laycock;Kevin E. Docherty;Edik Rafailov;Piotr Perlin;Steve Najda;Mike Leszczynski;Anthony E. Kelly
2018 20th International Conference on Transparent Optical Networks (ICTON)
Year: 2018 | Conference Paper |
Cited by: Papers (2)
Gallium nitride (GaN) laser diodes are becoming popular sources not only for lighting but for applications ranging from communications to quantum. This paper presents the use of a commercial, off-the-shelf laser diode, with an emission wavelength of 450 nm, for visible light communication, both in free space and for underwater scenarios. Data rates up to 15 Gbit/s have been achieved by making use ...Show More
InGaN/GaN Laser Diodes and their Applications
Scott Watson;Steffan Gwyn;Shaun Viola;Giovanni Giuliano;Thomas J. Slight;Szymon Stanczyk;Szymon Grzanka;Amit Yadav;Duncan Rowe;Leslie Laycock;Kevin E. Docherty;Edik Rafailov;Piotr Perlin;Steve Najda;Mike Leszczynski;Anthony E. Kelly
Year: 2018 | Conference Paper |
InGaN distributed feed back laser with sidewall gratings emitting at 42X nm
A. Yadav;T. J. Slight;S. Watson;S. Grzanka;S. Stanczyk;N. B. Chichkov;K. E. Docherty;P. Perlin;S. Najda;M. Leszczyński;A. E. Kelly;E. Rafailov
2018 International Conference Laser Optics (ICLO)
Year: 2018 | Conference Paper |
Cited by: Patents (1)
InGaN/GaN Laser Diodes With High Order Notched Gratings
Thomas J. Slight;Amit Yadav;Opeoluwa Odedina;Wyn Meredith;Kevin E. Docherty;Edik Rafailov;Anthony E. Kelly
IEEE Photonics Technology Letters
Cited by: Papers (15)
We report on InGaN/GaN distributed feedback laser diodes with high order gratings emitting at a single wavelength around 428 nm. The 39th order notched gratings have the advantage of a simplified fabrication route with no need for overgrowth. The laser ridge and grating were formed by electron beam lithography followed by ICP etching. The as-cleaved lasers emitted in the pulsed regime with a peak ...Show More
InGaN/GaN Distributed Feedback Laser Diodes With Deeply Etched Sidewall Gratings
Thomas J. Slight;Opeoluwa Odedina;Wyn Meredith;Kevin E. Docherty;Anthony E. Kelly
IEEE Photonics Technology Letters
Cited by: Papers (26)
We report on the design, fabrication, and characterization of InGaN/GaN distributed feedback laser diodes emitting at a single wavelength around 430 nm. Third-order sidewall-etched gratings were used which have the advantage of a simple fabrication route with no need for overgrowth. We carried out waveguide modeling to find the effective modal indices of the grating and calculate the coupling coef...Show More
Wavelength tuning and polarisation control with an integrated tunable birefringent filter for quantum cascade lasers
D. Dhirhe;T. J. Slight;B. M. Holmes;D. C. Hutchings;C. N. Ironside
2013 Conference on Lasers & Electro-Optics Europe & International Quantum Electronics Conference CLEO EUROPE/IQEC
Year: 2013 | Conference Paper |
Summary form only given. Birefringent filters are routinely used as a wavelength tuning element in bulk optics, broadly tunable lasers such Ti:Sapphire [1] and dye lasers. A detailed description of birefringent filter operation can be found in ref. [2]. In this paper, we report the design, fabrication and characterisation of an integrated electro-optically tunable birefringent filter for wavelengt...Show More
Recent progress in short wavelength quantum cascade lasers
D. G. Revin;J. P. Commin;J. W. Cockburn;S. Y. Zhang;K. Kennedy;A. B. Krysa;M. Hopkinson;T. Slight;A. McKee;W Meredith;C. Ironside
2011 IEEE Photonics Society Summer Topical Meeting Series
Year: 2011 | Conference Paper |
Cited by: Papers (2)
The 3-4μm wavelength range is of key technological importance for a wide range of applications. As a consequence of the strong fundamental C-H stretch mode that occurs at around 3.3μm, the detection of many important hydrocarbon species has maximum sensitivity (potentially ~ parts per trillion) in this range. This leads to many important applications in various areas, for example, clinical diagnos...Show More
Single-wavelength InGaAs/AlAs(Sb) quantum cascade lasers
Thomas Slight;Richard Phelan;Dmitry Revin;Andrew McKee;John Cockburn;Brian Kelly;Charles Ironside
IPRM 2011 - 23rd International Conference on Indium Phosphide and Related Materials
Year: 2011 | Conference Paper |
Recently, significant progress has been made in the development of short-wavelength quantum-cascade lasers (QCLs) emitting in the 3-4 μm wavelength range, where many molecular species of interest have their strongest rotational-vibrational absorption bands. A laser designed for gas sensing applications must have a narrow spectral width in order to differentiate between the fine features of the uni...Show More
Quantum cascade ring lasers: Unidirectional operation and coupled ring tuning
C.C. Nshii;C. N. Ironside;M. Sorel;T. J. Slight;S.Y. Zhang;D. G. Revin;J. W. Cockburn
2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference (CLEO EUROPE/EQEC)
Year: 2011 | Conference Paper |
Quantum cascade lasers (QCLs) are semiconductor lasers based on intersubband transitions in quantum wells. Semiconductor lasers in ring format do not need cleaved facets or gratings to achieve optical feedback required for lasing and could support either bidirectional or unidirectional operation. In this paper, we report on QCL in this ring format for unidirectional operation and coupled ring tuni...Show More
$\lambda \sim {3.35}\ \mu$m Distributed-Feedback Quantum-Cascade Lasers With High-Aspect-Ratio Lateral Grating
Thomas J Slight;Giuseppe Tandoi;Dmitry G Revin;Andrew McKee;Shiyong Y Zhang;Wyn Meredith;John W Cockburn;Charles N Ironside
IEEE Photonics Technology Letters
Cited by: Papers (8)
We report the development of room-temperature distributed-feedback quantum-cascade lasers operating in a single mode in the 3.34 to 3.35 μm wavelength range. First-order lateral gratings with high aspect ratio (the ratio between the grating etch depth and its period) were formed using inductively coupled plasma etching. The as-cleaved lasers emit in pulsed regime with a sidemode suppression ratio ...Show More
Optical Control of a Resonant Tunneling Diode Microwave-Photonic Oscillator
Bruno Romeira;José M. L. Figueiredo;Charles N. Ironside;Anthony E. Kelly;Thomas J. Slight
IEEE Photonics Technology Letters
Cited by: Papers (21)
We report on optical injection-locking of a microwave-photonic oscillator based on the integration of a resonant tunneling diode optical waveguide photodetector with a communication laser diode. The oscillator locking was achieved with in-fiber optical powers as low as 0.2 mW, and locking ranges up to 23.8 MHz for in-fiber optical power of few milliwatts and with phase-noise suppression below -110...Show More
Room-Temperature Operation of Discrete-Mode InGaAs–AlAsSb Quantum-Cascade Laser With Emission at $\lambda=3.3\ \mu$m
Richard Phelan;Thomas James Slight;Brian Kelly;John O'Carroll;Andrew McKee;Dmitry G. Revin;Shiyong Y. Zhang;Andrey B. Krysa;Kenneth L. Kennedy;John W. Cockburn;Charlie N. Ironside;Wyn Meredith;James O'Gorman
IEEE Photonics Technology Letters
Cited by: Papers (6)
Discrete-mode quantum-cascade lasers have been developed in the InGaAs-AlAsSb-InP materials system. For an uncoated 10-μ m-wide ridge waveguide and 3000-μm-long cavity, the laser had a threshold current density Jth of 4.2 kA·cm-2 (Ith=1.5 A) at 300 K with a slope efficiency of 80 mW/A. A stable single-mode emission near 3.3 μ m with a sidemode suppression ratio of nearly 25 dB was observed and a t...Show More
Room-Temperature Operation of Discrete-Mode InGaAs–AlAsSb Quantum-Cascade Laser With Emission at $\lambda=3.3\ \mu$m
Richard Phelan;Thomas James Slight;Brian Kelly;John O'Carroll;Andrew McKee;Dmitry G. Revin;Shiyong Y. Zhang;Andrey B. Krysa;Kenneth L. Kennedy;John W. Cockburn;Charlie N. Ironside;Wyn Meredith;James O'Gorman
Nonlinear Dynamics of Resonant Tunneling Optoelectronic Circuits for Wireless/Optical Interfaces
Bruno Romeira;JosÉ M. L. Figueiredo;Thomas James Slight;Liquan Wang;Edward Wasige;Charles N. Ironside;Anthony E. Kelly;Richard Green
We report on experimental and modeling results on the nonlinear dynamics of a resonant-tunneling-diode-based (RTD) optoelectronic circuits that can be used as the basis of a wireless/optical interface for wireless access networks. The RTD-based circuits are optoelectronic integrated circuits that have negative differential resistance and act as optoelectronic voltage-controlled oscillators. These ...Show More
Chaotic Dynamics in Resonant Tunneling Optoelectronic Voltage Controlled Oscillators
Bruno Romeira;JosÉ M. L. Figueiredo;Charles N. Ironside;Thomas Slight
IEEE Photonics Technology Letters
Cited by: Papers (12)
A new way of generating electrical and optical chaotic carriers is demonstrated using an optoelectronic voltage controlled oscillator consisting of a laser diode (LD) driven by a resonant tunneling diode (RTD) perturbed by radio-frequency signals. The high-dimensional broadband (gigahertz-wide) chaotic current produced by the RTD modulates a LD, providing a simple way to convert electrical chaotic...Show More
Wireless/photonics interfaces based on resonant tunneling diode optoelectronic oscillators
B. Romeira;J. M. L. Figueiredo;T. J. Slight;L. Wang;E. Wasige;C. N. Ironside
2009 Conference on Lasers and Electro-Optics and 2009 Conference on Quantum electronics and Laser Science Conference
Year: 2009 | Conference Paper |
Cited by: Papers (1)
Short wavelength distributed feedback quantum cascade laser
T. J. Slight;G. Tandoi;C. N. Ironside;A. McKee;C. Langton;I. Eddie;D. G. Revin;M. J. Steer;S. Y. Zhang;J. W. Cockburn;V. M. N. Passaro;F. De Leonardis
2009 Conference on Lasers and Electro-Optics and 2009 Conference on Quantum electronics and Laser Science Conference
Year: 2009 | Conference Paper |
Wireless injection locking and phase noise reduction in a semiconductor laser driven by a resonant tunnelling diode nonlinear oscillator
B. Romeira;J. M. L. Figueiredo;T. J. Slight;L. Wang;E. Wasige;C. N. Ironside
CLEO/Europe - EQEC 2009 - European Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference
Year: 2009 | Conference Paper |
Cited by: Patents (1)
The development of optoelectronic integrated circuits (OEIC) that combine optical and electronic functionalities on a single chip have been driven by numerous telecommunications applications including microwave-optical interfaces for radio-over-fiber picocellular networks for the next-generation wireless communication systems, also know as fourth-generation (4G) systems [1, 2]. The integration of ...Show More
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