Spontaneous Emission In Microcavity Lasers

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

DOWNLOAD NOW!

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

DOWNLOAD NOW!

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)

DOWNLOAD NOW!

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

DOWNLOAD NOW!

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 : Richard Kounai Chang
Publisher : World Scientific
ISBN 13 : 9789810223441
Total Pages : 456 pages
Book Rating : 4.47/5 ( download)

DOWNLOAD NOW!

Download or read book Optical Processes in Microcavities written by Richard Kounai Chang and published by World Scientific. This book was released on 1996 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: The dielectric microstructures act as ultrahigh Q factors optical cavities, which modify the spontaneous emission rates and alter the spatial distributions of the input and output radiation. The editors have selected leading scientists who have made seminal contributions in different aspects of optical processes in microcavities. Every attempt has been made to unify the underlying physics pertaining to microcavities of various shapes. This book begins with a chapter on the role of microcavity modes with additional chapters on how these microcavity modes affect the spontaneous and stimulated emission rates, enhance nonlinear optical processes, used in cavity-QED and chemical physics experiments, aid in single-molecule detection, influence the design of microdisk semiconductor lasers, and how deformed cavities can be treated with classical chaos theory.

Author : Qing Gu
Publisher : Cambridge University Press
ISBN 13 : 1107110483
Total Pages : 333 pages
Book Rating : 4.89/5 ( download)

DOWNLOAD NOW!

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: A unique and comprehensive resource covering the fundamentals of nanolasers, with details of design, fabrication, and applications.

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

DOWNLOAD NOW!

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 : S. F. Yu
Publisher : John Wiley & Sons
ISBN 13 : 9780471391241
Total Pages : 486 pages
Book Rating : 4.47/5 ( download)

DOWNLOAD NOW!

Download or read book Analysis and Design of Vertical Cavity Surface Emitting Lasers written by S. F. Yu and published by John Wiley & Sons. This book was released on 2003-09-04 with total page 486 pages. Available in PDF, EPUB and Kindle. Book excerpt: A practical, hands-on guidebook for the efficient modeling of VCSELs Vertical Cavity Surface Emitting Lasers (VCSELs) are a unique type of semiconductor laser whose optical output is vertically emitted from the surface as opposed to conventional edge-emitting semiconductor lasers. Complex in design and expensive to produce, VCSELs nevertheless represent an already widely used laser technology that promises to have even more significant applications in the future. Although the research has accelerated, there have been relatively few books written on this important topic. Analysis and Design of Vertical Cavity Surface Emitting Lasers seeks to encapsulate this growing body of knowledge into a single, comprehensive reference that will be of equal value for both professionals and academics in the field. The author, a recognized expert in the field of VCSELs, attempts to clarify often conflicting assumptions in order to help readers achieve the simplest and most efficient VCSEL models for any given problem. Highlights of the text include: * A clear and comprehensive theoretical treatment of VCSELs * Detailed derivations for understanding the operational principles of VCSELs * Mathematical models for the investigation of electrical, optical, and thermal properties of VCSELs * Case studies on the mathematical modeling of VCSELs and the implementation of simulation programs

Author : Richard K Chang
Publisher : World Scientific
ISBN 13 : 9814500097
Total Pages : 446 pages
Book Rating : 4.98/5 ( download)

DOWNLOAD NOW!

Download or read book Optical Processes In Microcavities written by Richard K Chang and published by World Scientific. This book was released on 1996-04-12 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt: The dielectric microstructures act as ultrahigh Q factors optical cavities, which modify the spontaneous emission rates and alter the spatial distributions of the input and output radiation. The editors have selected leading scientists who have made seminal contributions in different aspects of optical processes in microcavities. Every attempt has been made to unify the underlying physics pertaining to microcavities of various shapes. This book begins with a chapter on the role of microcavity modes with additional chapters on how these microcavity modes affect the spontaneous and stimulated emission rates, enhance nonlinear optical processes, used in cavity-QED and chemical physics experiments, aid in single-molecule detection, influence the design of microdisk semiconductor lasers, and how deformed cavities can be treated with classical chaos theory.

Author : Zhe Chuan Feng
Publisher : CRC Press
ISBN 13 : 9780750301800
Total Pages : 318 pages
Book Rating : 4.05/5 ( download)

DOWNLOAD NOW!

Download or read book Semiconductor Interfaces, Microstructures and Devices written by Zhe Chuan Feng and published by CRC Press. This book was released on 1993-01-01 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt: A semiconductor interface is the contact between the semiconductor itself and a metal. The interface is a site of change, and it is imperative to ensure that the semiconducting material is sealed at this point to maintain its reliability. This book examines various aspects of interfaces, showing how they can affect microstructures and devices such as infrared photodetectors (as used in nightsights) and blue diode lasers. It presents various techniques for examining different types of semiconductor material and suggests future potential commercial applications for different semiconductor devices. Written by experts in their fields and focusing on metallic semiconductors (Cadmium Telluride and related compounds), this comprehensive overview of recent developments is an essential reference for those working in the semiconductor industry and provides a concise and comprehensive introduction to those new to the field.