Spectral width reduction in multilongitudinal mode lasers by spatial loss profiling

DeChiaro, L.F.

doi:10.1109/50.84163

Cited by 18 publications

(5 citation statements)

References 16 publications

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“…In this section a single slotted Fabry-Perot laser diode will be introduced which forms the basis for our tunable platform. The single slot laser is fabricated by etching into the waveguide of the FP laser diode as described in (DeChiaro 1991;McDonald & Corbett 1996;Fessant & Boucher 1998;Klehr, Beister et al 2001;Lambkin, Percival et al 2004;Engelstaedter, Roycroft et al 2008). The slots act as reflection centres and produce a modulation of the reflection and transmission spectra dependent on the characteristics of the slot such as slot position, slot depth to which it is etched and slot width.…”

Section: Background On Slot Designmentioning

confidence: 99%

Advances in Optical and Photonic Devices

Kim¹

2010

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The title of this book, Advances in Optical and Photonic Devices, encompasses a broad range of theory and applications which are of interest for diverse classes of optical and photonic devices. Unquestionably, recent successful achievements in modern optical communications and multifunctional systems have been accomplished based on composing "building blocks" of a variety of optical and photonic devices. Thus, the grasp of current trends and needs in device technology would be useful for further development of such a range of relative applications.The book is going to be a collection of the contemporary researches and developments of various devices and structures in the area of optics and photonics. It is composed of 17 excellent chapters covering fundamental theory, physical operation mechanisms, fabrication and measurement techniques, application examples. Besides, it contains comprehensive reviews of recent trends and advancements in the field. First six chapters are especially focused on diverse aspects of recent developments of lasers and related technologies, while the later chapters deal with various optical and photonic devices including waveguides, filters, oscillators, isolators, photodiodes, photomultipliers, microcavities, and so on. Although the book is a collected edition of specific technological issues, I strongly believe that the readers can obtain generous and overall ideas and knowledge of the state-of-the-art technologies in optical and photonic devices.Lastly, special words of thanks should go to all the scientists and engineers who have devoted a great deal of time to writing excellent chapters in this book.

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Section: Background On Slot Designmentioning

confidence: 99%

Advances in Optical and Photonic Devices

Kim¹

2010

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“…Using a rate equation approach, the optical intensities at the resonant wavelengths of the diode have been investigated to account spectral characteristics of the MLDs [5]. However, from the following studies it can be seen that the resonant wavelength does not necessarily coincide the oscillation wavelength of the MLDs, which casts certain doubt on the analysis reported.…”

Section: Introductionmentioning

confidence: 97%

“…Observations made several years ago indicate that defects inside the active layer of the diode may change the spectral characteristics considerably [4]. Experiments showed that satisfied mode-supression-ratio (MSR) can be expected from the MLDs when the defects are located at distances of L/(2 m ) from one of the diode facets, with L being the length of the diode [5].…”

Section: Introductionmentioning

confidence: 98%

Mode Suppression of Single-mode Micromachined Fabry-Perot Semiconductor Lasers

Li¹,

Wang²,

Chen³

et al. 1999

Journal of Optical Communications

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“…The monolithic approach, by contrast, is less prone to stability problems as it keeps the original waveguide alignment intact, whilst relying on nonmechanical techniques to create a compound cavity. Early attempts included the definition of etched ICRs by reactive ion etching [14], laser ablation [15] and, more recently, focused ion beam etching [16], which was particularly successful in obtaining reliable single-mode operation by carefully controlling the ICR position and size with minimum threshold penalty. In [16], single and multiple ICRs were employed to modify the Fabry-Pérot spectrum by "mode sculpturing," with the typical ICR reflectivity between 10 and 10 .…”

Section: A Background and Technologymentioning

confidence: 99%

Ultrafast harmonic mode-locking of monolithic compound-cavity laser diodes incorporating photonic-bandgap reflectors

Yanson

Street

McDougall

et al. 2002

IEEE J. Quantum Electron.

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We present the first demonstration of reproducible harmonic mode-locked operation from a novel design of monolithic semiconductor laser comprising a compound cavity formed by a 1-D photonic-bandgap (PBG) mirror. Mode-locking (ML) is achieved at a harmonic of the fundamental round-trip frequency with pulse repetition rates from 131 GHz up to a record high frequency of 2.1 THz. The devices are fabricated from GaAs-Al-GaAs material emitting at a wavelength of 860 nm and incorporate two gain sections with an etched PBG reflector between them, and a saturable absorber section. Autocorrelation studies are reported which allow the device behavior for different ML frequencies, compound cavity ratios, and type and number of intra-cavity reflectors to be analyzed. The highly reflective PBG microstructures are shown to be essential for subharmonic-free ML operation of the high-frequency devices. We have also demonstrated that the single PBG reflector can be replaced by two separate features with lower optical loss. These lasers may find applications in terahertz; imaging, medicine, ultrafast optical links, and atmospheric sensing

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Spectral width reduction in multilongitudinal mode lasers by spatial loss profiling

Cited by 18 publications

References 16 publications

Advances in Optical and Photonic Devices

Advances in Optical and Photonic Devices

Mode Suppression of Single-mode Micromachined Fabry-Perot Semiconductor Lasers

Ultrafast harmonic mode-locking of monolithic compound-cavity laser diodes incorporating photonic-bandgap reflectors

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