Download or read book Novel Two and Three Photon Pumped Lasing Dyes Design Synthesis and Characterization written by and published by . This book was released on 2006 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this proposed research project, efforts have been focused on the synthesis and optical properties characterization of some multi-photon absorbing chromophores especially with frequency up-converted stimulated emission behavior. This research project was originally aimed to study some structural parameters that may affect the multi-photon pumped stimulated emission properties in dye molecules. The structural parameters that was attempted to investigate include the substituent effects (types and/or positions) and chromophoric unit number density effect. Significant amount of time and man-power was spent to accomplish the synthesis and characterization of some of the designed model compounds. Most of these compounds possess strong two- and three-photon absorption (2PA & 3PA) induced up-converted emission covering various spectral regions. One of the synthesized stibazolium-type chromophore also shows strong 2PA-induced stimulated emission when pumped by femtosecond laser pulses at ~775 nm. Specifically, four stilbazolium chromophores have been stabilized for 2PP stimulated emission property studies. Only one of the synthesized compounds possesses 2PP-induced up-converted cavityless lasing when pumped by femtosecond laser pulses. To the best of author's knowledge, this compound is so far the only stilbazolium salt with symmetrical di-substitution in its molecular structure that exhibits 2PP-induced stimulated emission in femtosecond regime. Although the currently collected data could not provide any clear picture of the relationship between molecular structure and stimulated emission property, using thiophene unit(s) as part of pi-bridge in designing symmetrically di-substituted two-photon lasing dyes might be a direction that worthy to explore. On the other hand, the blueshifted forward lasing is an interesting phenomenon that worth to put more efforts on studying its origin.
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2006 with total page 780 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Enhanced Two photon Absorption in a Squaraine fluorene squaraine Dye written by William V. Moreshead and published by . This book was released on 2013 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: The discovery of any new technology is usually accompanied by a need for new or improved materials which make that technology useful in practical applications. In the case of two-photon absorption (2PA) this has truly been the case. Since its first demonstration in 1961, there has been an ever increasing quest to understand the relationships between two-photon absorption and the structure of two-photon absorbing materials. This quest has been motivated by the many applications for 2PA which have been reported, including fluorescence bioimaging, 3D microfabrication, 3D optical data storage, upconverted lasing, and photodynamic therapy. The work presented in this dissertation represents another step in the effort to better understand the structure/property relationships of 2PA. In this work a new, squaraine-fluorene-squaraine molecule, proposed through a joint effort of quantum and synthetic chemists, was synthesized and its photophysical properties were measured. The measurements included linear and two-photon photophysical properties, as well as solvatochromic behavior. Quantum calculations were done to aid in understanding those photophysical and solvatochromic properties. A single squaraine dye was also synthesized and used as a model compound to assist in understanding this new structure. In Chapter 1 an introduction to 2PA and several of its applications is given. Chapter 2 gives a background of 2PA structure/property relationships that have been reported to date, based on work done with polymethine dyes. Chapter 3 gives a full account of the synthesis, characterization, and detailed quantum chemical analyses of this new squaraine-fluorene-squaraine molecule and the corresponding model compound squaraine dye. Chapter 4 gives some additional work and suggested future directions.
Download or read book Nonlinear Optical Transmission and Multiphoton Processes in Organics written by and published by . This book was released on 2005 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Design Synthesis and Characterization of Organic and Polymeric Two photon Absorbing Materials written by Lixin Zheng and published by . This book was released on 2003 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Optical Engineering written by and published by . This book was released on 2002 with total page 940 pages. Available in PDF, EPUB and Kindle. Book excerpt: Publishes papers reporting on research and development in optical science and engineering and the practical applications of known optical science, engineering, and technology.
Download or read book Directory of Graduate Research written by American Chemical Society. Committee on Professional Training and published by . This book was released on 2005 with total page 1932 pages. Available in PDF, EPUB and Kindle. Book excerpt: Faculties, publications and doctoral theses in departments or divisions of chemistry, chemical engineering, biochemistry and pharmaceutical and/or medicinal chemistry at universities in the United States and Canada.
Download or read book Materials and Devices for Photonic Circuits written by and published by . This book was released on 1999 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Organic Nonlinear Optical Materials written by Manfred Eich and published by SPIE-International Society for Optical Engineering. This book was released on 1999 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work brings together a selection of papers dealing with various aspects of organic nonlinear optical materials.
Download or read book International Aerospace Abstracts written by and published by . This book was released on 1999 with total page 974 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1976 with total page 964 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 818 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fluorescence Microscopy written by Ulrich Kubitscheck and published by John Wiley & Sons. This book was released on 2017-03-27 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt: Zu dem Thema gibt es viele Publikationen, die von Experten für Experten geschrieben wurden. Dieses Buch wendet sich insbesondere an Studenten höherer Semester und Forscher, denen das Hintergrundwissen der Physik fehlt, um neuartige Verfahren der Fluoreszenzmikroskopie zu verstehen. Die zweite Auflage wartet mit neuen Kapiteln und einer erweiterten Einführung auf. Der Schwerpunkt liegt auf der hochauflösenden und Einzelmolekül-Mikroskopie. Jedes Kapitel wurde von einem anerkannten Experten des Fachgebiets geschrieben und sorgfältig überarbeitet, um so die Entwicklungen der letzten Jahre wiederzugeben.
Download or read book Physics and Chemistry of Graphene written by Toshiaki Enoki and published by CRC Press. This book was released on 2013-01-24 with total page 478 pages. Available in PDF, EPUB and Kindle. Book excerpt: From a chemistry aspect, graphene is the extrapolated extreme of condensed polycyclic hydrocarbon molecules to infinite size. Here, the concept on aromaticity which organic chemists utilize is applicable. Interesting issues appearing between physics and chemistry are pronounced in nano-sized graphene (nanographene), as we recognize the importance of the shape of nanographene in understanding its electronic structure. In this book, the fundamental issues on the electronic, magnetic, and chemical properties of condensed polycyclic hyodrocarbon molecules, nanographene and graphene are comprehensively discussed.
Download or read book Potential Applications of Concentrated Solar Energy written by National Research Council and published by National Academies Press. This book was released on 1991-02-01 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book assesses the current state of the field in a number of potential applications and discusses technologies for which concentrated solar energy might be utilized. It contains all the papers submitted by the speakers as well as summaries of the presentations and discussions that followed each session.
Download or read book Phosphor Handbook written by Ru-Shi Liu and published by CRC Press. This book was released on 2022-01-31 with total page 721 pages. Available in PDF, EPUB and Kindle. Book excerpt: A benchmark publication, the first edition of the Phosphor Handbook, published in 1998, set the standard for references in the field. The second edition, updated and published in 2007, began exploring new and emerging fields. However, in the last 14 years, since the second edition was published, many notable advances and broader phosphor applications have occurred. Completely revised, updated, and expanded into three separate volumes, this third edition of the Handbook covers the most recent developments in phosphor research, characterization, and applications. This volume on ‘Novel Phosphors, Synthesis, and Applications’ provides the descriptions of synthesis and optical properties of phosphors used in different applications, including the novel phosphors for some newly developed applications. The chapters in this book cover: Various LED-based phosphors and their synthesis and applications Ingenious integrated smart phosphors and their novel optoelectronic and photonic devices Quantum dot, single crystalline, and glass phosphors Upconversion nanoparticles for super-resolution imaging and photonic and biological applications Special phosphors for laser, OLED, energy storage, quantum cutting, thermometry, photosynthesis, AC-driven LED, and solar cells
Download or read book Halide Perovskites written by Tze-Chien Sum and published by John Wiley & Sons. This book was released on 2019-03-25 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: Real insight from leading experts in the field into the causes of the unique photovoltaic performance of perovskite solar cells, describing the fundamentals of perovskite materials and device architectures. The authors cover materials research and development, device fabrication and engineering methodologies, as well as current knowledge extending beyond perovskite photovoltaics, such as the novel spin physics and multiferroic properties of this family of materials. Aimed at a better and clearer understanding of the latest developments in the hybrid perovskite field, this is a must-have for material scientists, chemists, physicists and engineers entering or already working in this booming field.
