Modeling Of Spontaneous Emission Modification In Microcavity Lasers Using Finite Elements

Author : Benjamin D. B. Klein
Publisher :
ISBN 13 :
Total Pages : 74 pages
Book Rating : 4.02/5 ( download)

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Download or read book Modeling of Spontaneous Emission Modification in Microcavity Lasers Using Finite Elements written by Benjamin D. B. Klein and published by . This book was released on 1995 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author : Yokoyama Hiroyuki
Publisher : CRC Press
ISBN 13 : 0429606745
Total Pages : 392 pages
Book Rating : 4.48/5 ( download)

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Download or read book Spontaneous Emission and Laser Oscillation in Microcavities written by Yokoyama Hiroyuki and published by CRC Press. This book was released on 2020-07-09 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: In spite of the increasing importance of microcavities, device physics or the observable phenomena in optical microcavities such as enhanced or inhibited spontaneous emission and its relation with the laser oscillation has not been systematically well-described-until now. Spontaneous Emission and Laser Oscillation in Microcavities presents the basics of optical microcavities. The volume is divided into ten chapters, each written by respected authorities in their areas. The book surveys several methods describing free space spontaneous emission and discusses changes in the feature due to the presence of a cavity. The effect of dephasing of vacuum fields on spontaneous emission in a microcavity and the effects of atomic broadening on spontaneous emission in an optical microcavity are examined. The book details the splitting in transmission peaks of planar microcavities containing semiconductor quantum wells. A simple but useful way to consider the change in the spontaneous emission rate from the viewpoint of mode density alteration by wavelength-sized cavities is provided. Authors also discuss the spontaneous emission in dielectric planar microcavities. Spontaneous emission in microcavity surface emitting lasers is covered, as are the effects of electron confinement in semiconductor quantum wells, wires, and boxes also given. The volume extends the controlling spontaneous emission phenomenon to laser oscillation. Starting from the Fermi golden rule, the microcavity laser rate equations are derived, and the oscillation characteristics are analyzed. Recent progress in optical microcavity experiments is summarized, and the applicability in massively optical parallel processing systems and demands for the device performance are explored. This volume is extremely useful as a textbook for graduate and postgraduate students and works well as a unique reference for researchers beginning to study in the field.

Author : Hiroyuki Yokoyama
Publisher :
ISBN 13 : 9780138738938
Total Pages : pages
Book Rating : 4.39/5 ( download)

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Download or read book Spontaneous Emission and Laser Oscillation in Microcavities written by Hiroyuki Yokoyama and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In spite of the increasing importance of microcavities, device physics or the observable phenomena in optical microcavities such as enhanced or inhibited spontaneous emission and its relation with the laser oscillation has not been systematically well-described-until now. Spontaneous Emission and Laser Oscillation in Microcavities presents the basics of optical microcavities. The volume is divided into ten chapters, each written by respected authorities in their areas. The book surveys several methods describing free space spontaneous emission and discusses changes in the feature due to the presence of a cavity. The effect of dephasing of vacuum fields on spontaneous emission in a microcavity and the effects of atomic broadening on spontaneous emission in an optical microcavity are examined. The book details the splitting in transmission peaks of planar microcavities containing semiconductor quantum wells. A simple but useful way to consider the change in the spontaneous emission rate from the viewpoint of mode density alteration by wavelength-sized cavities is provided. Authors also discuss the spontaneous emission in dielectric planar microcavities. Spontaneous emission in microcavity surface emitting lasers is covered, as are the effects of electron confinement in semiconductor quantum wells, wires, and boxes also given. The volume extends the controlling spontaneous emission phenomenon to laser oscillation. Starting from the Fermi golden rule, the microcavity laser rate equations are derived, and the oscillation characteristics are analyzed. Recent progress in optical microcavity experiments is summarized, and the applicability in massively optical parallel processing systems and demands for the device performance are explored. This volume is extremely useful as a textbook for graduate and postgraduate students and works well as a unique reference for researchers beginning to study in the field.

Author : Dustin P. Ziegler
Publisher :
ISBN 13 : 9781423566649
Total Pages : 119 pages
Book Rating : 4.45/5 ( download)

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Download or read book Spontaneous Emission in Microcavity Lasers written by Dustin P. Ziegler and published by . This book was released on 1997-12-01 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt: An understanding of spontaneous emission processes within microcavities is crucial in addressing the need to make tomorrow's microlasers more efficient. One approach to improving the device efficiency is to reduce the threshold input energy at which lasing begins to occur. It has been suggested that the threshold in a microcavity laser can be decreased by increasing the fraction of spontaneous emission into the lasing mode, this can be accomplished by preferentially coupling the gain medium of the laser to the electromagnetic cavity mode of interest. It therefore becomes necessary to understand the mechanism by which this coupling takes place. This research develops a fully quantum mechanical description of the interaction between a gain medium medeled as a two level atom and a multimode electromagnetic field in a microcavity. Atomic transition probabilities are computed for systems in which the atom couples through a single photon process to electromagnetic cavity modes which range in number from two to 2000. Calculations performed for cavities with widely spaced modes demonstrate that atoms exhibit Jaynes Cummings behavior when closely tuned to one mode. Detuning of the atom from the mode inhibits the exchange of energy, while increasing the strength of the coupling to the mode amplifies this exchange. Two level systems strongly coupled to many closely spaced modes exhibit spontaneous emission rates characteristic of an atom in free space.

Author :
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.22/5 ( download)

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Download or read book Historia calumnie novercalis, que septem sapientium inscribitur ... written by and published by . This book was released on 1490 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author : Michael J. Noble
Publisher :
ISBN 13 : 9781423562122
Total Pages : 190 pages
Book Rating : 4.27/5 ( download)

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Download or read book Optical Physics of Microcavity Surface Emitting Lasers written by Michael J. Noble and published by . This book was released on 1998-03-01 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation consists of an in-depth theoretical analysis of the optical impact of transverse index confinement on the lasing modes of microcavity surface emitting lasers. Two different variational techniques were employed to calculate the relevant optical laser parameters: (1) modal resonance, field profile, (2) confinement factor, and (3) threshold gain. Through a semianalytic field analysis, two new confinement related effects were discovered: (1) a polarization dependent change in mirror reflectance with aperture radius, and (2) a mode dependent blueshift. Through a numerical field analysis, the physical mechanisms governing diffraction were ascertained. These are: (1) the transverse confinement of the optical mode, the degree of tilt of the mode propagation vector away from normal to the mirror surfaces, and (2) the density of parasitic modes in the spectral vicinity of the lasing mode. Based on these results, a new semianalytic technique was derived for estimating diffraction loss via rigorous coupling to the parasitic modes. Finally, this model was combined with a gain model and a new mode density model to compute spontaneous emission rate, light verses current, threshold current, and spontaneous emission factors for a low threshold oxide-apertured device.

Author :
Publisher :
ISBN 13 :
Total Pages : 1360 pages
Book Rating : 4.09/5 ( download)

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Download or read book Science Abstracts written by and published by . This book was released on 1995 with total page 1360 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author : Qing Gu
Publisher : Cambridge University Press
ISBN 13 : 1316982696
Total Pages : 333 pages
Book Rating : 4.93/5 ( download)

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Download or read book Semiconductor Nanolasers written by Qing Gu and published by Cambridge University Press. This book was released on 2017-02-16 with total page 333 pages. Available in PDF, EPUB and Kindle. Book excerpt: This unique resource explains the fundamental physics of semiconductor nanolasers, and provides detailed insights into their design, fabrication, characterization, and applications. Topics covered range from the theoretical treatment of the underlying physics of nanoscale phenomena, such as temperature dependent quantum effects and active medium selection, to practical design aspects, including the multi-physics cavity design that extends beyond pure electromagnetic consideration, thermal management and performance optimization, and nanoscale device fabrication and characterization techniques. The authors also discuss technological applications of semiconductor nanolasers in areas such as photonic integrated circuits and sensing. Providing a comprehensive overview of the field, detailed design and analysis procedures, a thorough investigation of important applications, and insights into future trends, this is essential reading for graduate students, researchers, and professionals in optoelectronics, applied photonics, physics, nanotechnology, and materials science.

Author :
Publisher :
ISBN 13 :
Total Pages : 692 pages
Book Rating : 4.93/5 ( download)

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Download or read book Summaries of Papers Presented at the Conference on Lasers and Electro-optics written by and published by . This book was released on 1997 with total page 692 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author : Victor Mikhailovich Ustinov
Publisher :
ISBN 13 : 9780198526797
Total Pages : 306 pages
Book Rating : 4.92/5 ( download)

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Download or read book Quantum Dot Lasers written by Victor Mikhailovich Ustinov and published by . This book was released on 2003 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book addresses issues associated with physics and technology of injection lasers based on self-organized quantum dots. Fundamental and technological aspects of quantum dot edge-emitting lasers and VCSELs, their current status and future prospects are summarized and reviewed. Basic principles of QD formation using self-organization phenomena are reviewed. Structural and optical properties of self-organized QDs are considered with a number of examples in different material systems. Recent achievements in controlling the QD properties including the effects of vertical stacking, changing the matrix bandgap and the surface density of QDs are reviewed. The authors focus on the use of self-organized quantum dots in laser structures, fabrication and characterization of edge and surface emitting diode lasers, their properties and optimization with special attention paid to the relationship between structural and electronic properties of QDs and laser characteristics. The threshold and power characteristics of the state-of-the-art QD lasers are demonstrated. Issues related to the long-wavelength (1.3-mm) lasers on a GaAs substrate are also addressed and recent results on InGaAsN-based diode lasers presented for the purpose of comparison.