Low Threshold Organic Semiconductor Lasers

Author : Yue Wang
Publisher : Springer Science & Business Media
Page : 164 pages
File Size : 43,8 Mb
Release : 2013-10-01
Category : Science
ISBN : 9783319012674

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Low Threshold Organic Semiconductor Lasers by Yue Wang Pdf

This thesis focuses on two areas - the development of miniature plastic lasers that can be powered by LEDs, and the application of these lasers as highly sensitive sensors for vapours of nitroaromatic explosives (e.g. TNT). Polymer lasers are extremely compact visible lasers; the research described in the thesis is groundbreaking, driving forward the technology and physical understanding to allow these lasers to be routinely pumped by a single high-power LED. A notable advance in the work is the demonstration of nanoimprinted polymer lasers, which exhibit the world's lowest pump threshold densities by two orders of magnitude. The thesis also advances the application of these compact, novel lasers as highly sensitive detectors of explosive vapours, demonstrating that rapid detection can be achieved when microporous polymers are used. This work also demonstrates a prototype CMOS-based microsystem sensor for explosive vapours, exploiting a new detection approach.

Author : Christian Karnutsch
Publisher : Cuvillier Verlag
Page : 155 pages
File Size : 52,7 Mb
Release : 2007
Category : Lasers
ISBN : 9783867273060

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Low Threshold Organic Thin Film Laser Devices by Christian Karnutsch Pdf

Author : Sébastien Forget,Sébastien Chénais
Publisher : Springer
Page : 179 pages
File Size : 52,6 Mb
Release : 2013-07-03
Category : Science
ISBN : 9783642367052

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Organic Solid-State Lasers by Sébastien Forget,Sébastien Chénais Pdf

Organic lasers are broadly tunable coherent sources, potentially compact, convenient and manufactured at low-costs. Appeared in the mid 60’s as solid-state alternatives for liquid dye lasers, they recently gained a new dimension after the demonstration of organic semiconductor lasers in the 90's. More recently, new perspectives appeared at the nanoscale, with organic polariton and surface plasmon lasers. After a brief reminder to laser physics, a first chapter exposes what makes organic solid-state organic lasers specific. The laser architectures used in organic lasers are then reviewed, with a state-of-the-art review of the performances of devices with regard to output power, threshold, lifetime, beam quality etc. A survey of the recent trends in the field is given, highlighting the latest developments with a special focus on the challenges remaining for achieving direct electrical pumping of organic semiconductor lasers. A last chapter covers the applications of organic solid-state lasers.

Author : Klaus Müllen,Ullrich Scherf
Publisher : John Wiley & Sons
Page : 426 pages
File Size : 53,6 Mb
Release : 2006-05-12
Category : Science
ISBN : 9783527607235

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Organic Light Emitting Devices by Klaus Müllen,Ullrich Scherf Pdf

This high-class book reflects a decade of intense research, culminating in excellent successes over the last few years. The contributions from both academia as well as the industry leaders combine the fundamentals and latest research results with application know-how and examples of functioning displays. As a result, all the four important aspects of OLEDs are covered: - syntheses of the organic materials - physical theory of electroluminescence and device efficiency - device conception and construction - characterization of both materials and devices. The whole is naturally rounded off with a look at what the future holds in store. The editor, Klaus Muellen, is director of the highly prestigious MPI for polymer research in Mainz, Germany, while the authors include Nobel Laureate Alan Heeger, one of the most notable founders of the field, Richard Friend, as well as Ching Tang, Eastman Kodak's number-one OLED researcher, known throughout the entire community for his key publications.

Author : Liu, Xin
Publisher : KIT Scientific Publishing
Page : 248 pages
File Size : 42,9 Mb
Release : 2015-06-19
Category : Electronic
ISBN : 9783731503705

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Organic Semiconductor Lasers and Tailored Nanostructures for Raman Spectroscopy by Liu, Xin Pdf

Author : Marco Anni,Sandro Lattante
Publisher : CRC Press
Page : 324 pages
File Size : 55,6 Mb
Release : 2018-05-24
Category : Science
ISBN : 9781351591751

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Organic Lasers by Marco Anni,Sandro Lattante Pdf

In the past 30 years, organic conjugated molecules have received a lot of attention in research because of their unique combination of active properties typical of semiconductors and the technological appeal typical of plastic materials. Among the different applications proposed for organic materials, organic lasers are quickly approaching the performance required in real devices, while research on novel active materials is still ongoing. The book covers the basic aspects of the measurement techniques of optical gain and amplified spontaneous emission (ASE) in organic films as well as the photophysics of organic materials that can be understood using ASE measurements. It reviews the recent advances in the development of new active materials for organic lasers as well as the actual state of the art of scattering-assisted random lasers and of strongly coupled organic microcavities, both promising interesting developments in the near future. Finally, it gives a detailed review of the state of the art of the organic lasers actually closest to real applications, namely external cavity lasers and distributed feedback lasers. The book is unique that it covers basic aspects, technological aspects, and systems, which are still a subject of basic science research.

Author : Guangye Zhang,Chen Xie,Peng You,Shunpu Li
Publisher : Springer Nature
Page : 314 pages
File Size : 40,8 Mb
Release : 2022-10-13
Category : Technology & Engineering
ISBN : 9789811960918

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Introduction to Organic Electronic Devices by Guangye Zhang,Chen Xie,Peng You,Shunpu Li Pdf

This book comprehensively describes organic electronic devices developed in the past decades. It not only covers the mainstream devices including organic light emitting diodes (OLEDs), organic photovoltaics (OPVs), and organic thin-film transistors (OTFTs) but also includes devices of recent interest such as organic immune transistors, organic photocatalysis devices, and themoelectrical devices. The book starts from the introduction of basic theory of organic semiconductor materials and devices, which acquaints the readers with the concepts of each type of device described in the following chapters. It also discusses the working principles, device layout, and fabrication process of these devices. The book is intended for undergraduate and postgraduate students who are interested in organic electronics, researchers/engineers working in the field of organic electronic devices/systems.

Author : Pen Yiao Ang
Publisher : Cuvillier Verlag
Page : 146 pages
File Size : 42,9 Mb
Release : 2021-10-26
Category : Science
ISBN : 9783736965034

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Organic Dye-Doped PMMA Thin-Film Laser by Pen Yiao Ang Pdf

Organic dye laser stands a chance to become the next generation of the light source. It is very interesting because organic dyes can cover a wide range of the pectrum of visible light. To realise organic solid-state laser, several organic dyes can be doped in a polymer matrix. One of the examples of low-priced polymer is poly(methyl methacrylate) (PMMA). However, the study of PMMA as a polymer matrix for organic dyes as a thin-film laser was not extensive. This thesis focused on the feasibility of organic dye-doped PMMA as a thin-film laser.

Author : Guohua Xie
Publisher : Elsevier
Page : 572 pages
File Size : 47,6 Mb
Release : 2023-09-15
Category : Technology & Engineering
ISBN : 9780323951470

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Solution-Processed Organic Light-Emitting Devices by Guohua Xie Pdf

Solution-Processed Organic Light-Emitting Devices provides a comprehensive reference on the principles and advances in materials design, device structures, and processing technologies of organic light-emitting diodes (OLEDs). Most importantly, the book analyses the dynamics of thin-film growth from solutions such as solvent orthogonalization, coffee-ring effects, and interfacial adhesion. Exciton generation and utilization, host–guest energy transfer, and interfacial interaction in the solution-processed films are considered with the material and device design to maximize the electroluminescent performance of OLEDs.The book reviews the materials, devices, and technologies dedicated to solution-processed thin-film devices, which are not only applicable to OLEDs but may be adapted to other emerging semiconducting devices due to the similarity in methods (for instance, quantum-dot LEDs and solar cells, and perovskite-based LEDs/photovoltaics/detectors).This book is suitable for researchers in academia and industry working in the materials science and engineering, chemistry, and physics disciplines. Discusses the most relevant and emerging solution-processable materials for OLED applications Reviews device engineering to address defects, charge transport, and exciton generation in fabricated solution-processable thin films Provides the methods to grow multilayered thin films from solutions with organic semiconductors, with particular attention to new technologies to overcome interfacial mixing effects

Author : Caroline Foucher
Publisher : Unknown
Page : 0 pages
File Size : 50,7 Mb
Release : 2015
Category : Electronic
ISBN : OCLC:1417554337

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Solution-processable, Mechanically-flexible Lasers by Caroline Foucher Pdf

The aim of the work in this thesis is to push the technology of solution-processed semiconductor lasers beyond the state-of-the-art and bring it closer to real-world implementation. An emphasis is put on the demonstration of mechanically-flexible lasers having low thresholds, high photostability and potential for cost-effectiveness and compact integration. Different gain materials, designs and pump sources are used to improve the performance and capabilities of these lasers. Distributed feedback resonators are chosen due to their planar fabrication and their potential for lower threshold than other cavities in the case of solution-processed lasers. Two types of gain materials are used: organic semiconductors and colloidal quantum dots. Encapsulation schemes compatible with the mechanical flexibility of the final devices, e.g. using transparent polymers or flexible glass membranes, are proposed and studied in order to extend the operational lifetime of the devices. One highlight of this work is the development of, to our knowledge, the first diode-pumped, mechanically flexible organic lasers encapsulated with thin-glass for high photostability. Other important outcomes include mechanical wavelength tuning of lasers, record performance for colloidal quantum dot lasers optically-pumped in the nanosecond regime and the demonstration of a red/green/blue laser. The capability for sensing applications of some reported formats of lasers are also shown.

Author : Cunzhu Tong,Chennupati Jagadish
Publisher : Elsevier
Page : 206 pages
File Size : 43,7 Mb
Release : 2019-08-06
Category : Science
ISBN : 9780128141632

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Nanoscale Semiconductor Lasers by Cunzhu Tong,Chennupati Jagadish Pdf

Nanoscale Semiconductor Lasers focuses on specific issues relating to laser nanomaterials and their use in laser technology. The book presents both fundamental theory and a thorough overview of the diverse range of applications that have been developed using laser technology based on novel nanostructures and nanomaterials. Technologies covered include nanocavity lasers, carbon dot lasers, 2D material lasers, plasmonic lasers, spasers, quantum dot lasers, quantum dash and nanowire lasers. Each chapter outlines the fundamentals of the topic and examines material and optical properties set alongside device properties, challenges, issues and trends. Dealing with a scope of materials from organic to carbon nanostructures and nanowires to semiconductor quantum dots, this book will be of interest to graduate students, researchers and scientific professionals in a wide range of fields relating to laser development and semiconductor technologies. Provides an overview of the active field of nanostructured lasers, illustrating the latest topics and applications Demonstrates how to connect different classes of material to specific applications Gives an overview of several approaches to confine and control light emission and amplification using nanostructured materials and nano-scale cavities

Author : Yue-Feng Liu,Yun-Fei Li,Pengcheng Sun
Publisher : Frontiers Media SA
Page : 70 pages
File Size : 45,7 Mb
Release : 2022-06-28
Category : Science
ISBN : 9782889764426

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Micro-nanostructured Optoelectronic Devices by Yue-Feng Liu,Yun-Fei Li,Pengcheng Sun Pdf

Author : Sarah Schols
Publisher : Springer Science & Business Media
Page : 154 pages
File Size : 43,6 Mb
Release : 2011-05-10
Category : Science
ISBN : 9789400716087

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Device Architecture and Materials for Organic Light-Emitting Devices by Sarah Schols Pdf

Device Architecture and Materials for Organic Light-Emitting Devices focuses on the design of new device and material concepts for organic light-emitting devices, thereby targeting high current densities and an improved control of the triplet concentration. A new light-emitting device architecture, the OLED with field-effect electron transport, is demonstrated. This device is a hybrid between a diode and a field-effect transistor. Compared to conventional OLEDs, the metallic cathode is displaced by one to several micrometers from the light-emitting zone, reducing optical absorption losses. The electrons injected by the cathode accumulate at an organic heterojunction and are transported to the light-emission zone by field-effect. High mobilities for charge carriers are achieved in this way, enabling a high current density and a reduced number of charge carriers in the device. Pulsed excitation experiments show that pulses down to 1 μs can be applied to this structure without affecting the light intensity, suggesting that pulsed excitation might be useful to reduce the accumulation of triplets in the device. The combination of all these properties makes the OLED with field-effect electron transport particularly interesting for waveguide devices and future electrically pumped lasers. In addition, triplet-emitter doped organic materials, as well as the use of triplet scavengers in conjugated polymers are investigated.

Author : Azzedine Boudrioua,Mahmoud Chakaroun,Alexis Fischer
Publisher : Elsevier
Page : 226 pages
File Size : 45,9 Mb
Release : 2017-07-11
Category : Science
ISBN : 9780081010723

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An Introduction to Organic Lasers by Azzedine Boudrioua,Mahmoud Chakaroun,Alexis Fischer Pdf

One of the biggest challenges of organic optoelectronics is the realization of the first organic laser diode (electrically pumped) which has a very strong potential for many applications. Similar to what happened in the field of inorganic optoelectronics when transforming LEDs into LDs, the race is on to transform an OLED into an OLD. This involves the development of innovative solutions to overcome the difficulties inherent in organic materials and the electric pump. This book presents the elements of physics, materials and technologies that allow us to understand the basics of organic lasers and to capture the progress made. It also provides guidance for future developments towards the organic laser diode. Describes the latest advancements in the development of organic lasers, one of the most challenging issues of the early part of this century Provides a detailed description of material features Features the state-of-the-art of organic sources and their potential applications Contains several topics currently under development

Author : F. J. Duarte
Publisher : BoD – Books on Demand
Page : 702 pages
File Size : 45,5 Mb
Release : 2010-12-30
Category : Technology & Engineering
ISBN : 9789533072425

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Coherence and Ultrashort Pulse Laser Emission by F. J. Duarte Pdf

In this volume, recent contributions on coherence provide a useful perspective on the diversity of various coherent sources of emission and coherent related phenomena of current interest. These papers provide a preamble for a larger collection of contributions on ultrashort pulse laser generation and ultrashort pulse laser phenomena. Papers on ultrashort pulse phenomena include works on few cycle pulses, high-power generation, propagation in various media, to various applications of current interest. Undoubtedly, Coherence and Ultrashort Pulse Emission offers a rich and practical perspective on this rapidly evolving field.