Laser crystals

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  • This book deals with theoretical and experimental aspects of solid-state lasers, including optimum waveguide design of end pumped and diode pumped lasers. Nonlinearity, including the nonlinear conversion, up frequency conversion and chirped pulse oscillators are discussed. Some new rare-earth-doped lasers, including double borate and halide crystals, and feedback in quantum dot semiconductor nanostructures are included.

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  • Lasers continue to be an amazingly robust field of activity, one of continually expanding scientific and technological frontiers.

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  • Tham khảo sách 'photonic crystals – innovative systems, lasers and waveguides', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

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  • In 2009 the world celebrated 50 years of lasers, bringing to the attention of the public how deeply lasers and laser related technologies have revolutionized both science and everyday life. Next year will be the fiftieth anniversary of the semiconductor laser. Used as a compact light source with high modulation rates, it transformed telecommunications in combination with glass fibers. Today laser diodes are omnipresent in data storage and communication. Still, most of these applications are based on infrared or red laser diodes.

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  • This book collects chapters on different theoretical and experimental aspects of photonics crystals for Nanophotonics applications. It is divided in two parts - a theoretical section and an experimental and applicative section.

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  • The pulsed diode end-pumped passively Q-switched solid-state Nd:YAG lasers are investigated experimentally. A high power laser diode (pulse repetition rate adjustable from 1 Hz to 10 kHz, pulse duration of 600 s) is used as a pumping laser. The obtained results show that the pulsed diode end-pumped passively Q-switched solid state Nd- doped lasers have the advantages in controlling pulse repetition rate, improving nanosecond solid-state laser pulse power and stability (low jitter) in comparison with the use of CW diode end-pumping.

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  • Phần 2 Giáo trình Quang điện tử (sử dụng cho bậc Đại học - Cao đẳng) trình bày linh kiện của hệ thống thông tin quang, ghép quang và khuếch đại quang, laser qua nội dung chương 6 đến chương 8 của tài liệu.

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  • Since the First International Congress on Liquid Crystals (Lcs), held at Kent State University, OH, USA, in 1965, the implications of these systems associated with various aspects of telecommunications, laser, display, automobile, aerospace technologies, thermo-optics, medicine and biology have been the subject of considerable debate among researchers, scientists and engineers. Indeed, LCs, being a unique mesomorphic phase of matter, combine properties of both solids (long-range orientation order, manifestations of Bragg diffraction, etc.) and liquids (fluidity, viscosity, etc.).

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  • The second volume of the book concerns the characterization approach of photonic crystals, photonic crystal lasers, photonic crystal waveguides and plasmonics including the introduction of innovative systems and materials. Photonic crystal materials promises to enable all-optical computer circuits and could also be used to make ultra low-power light sources.

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  • The molecular masses of macromolecules and subunits of the extracellular hemoglobin from the fresh-water crustaceanDaphnia magnawere deter-mined by analytical ultracentrifugation, multiangle laser light scattering and electrospray ionization mass spectrometry.

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  • Saccharomyces cerevisiaepossesses two glycogenin isoforms (designated as Glg1p and Glg2p) that both contain a con-served tyrosine residue, Tyr232. However, Glg2p possesses an additional tyrosine residue, Tyr230 and therefore two potential autoglucosylation sites. Glucosylation of Glg2p was studied using both matrix-assisted laser desorption ionization and electrospray quadrupole time of flight mass spectrometry. Glg2p, carrying a C-terminal (His6) tag, was produced inEscherichia coliand purified.

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  • We developed the synthesis of the caged oxygen donor (l-peroxo)(l-hydroxo)bis[bis(bipyridyl)cobalt(III)] complex (HPBC) as nitrate salt,which has,compared with the perchlorate-form described previously [MacArthur,R., Sucheta,A.,Chong,F.F. & Einarsdottir,O¨ . (1995) Proc. Natl Acad. Sci. USA, 92,8105–8109],greatly enhanced solubility. Now,the quantum efficiency of the photolytical release of dioxygenwas determined tobe 0.4 per photon at a laser wavelength of 308 nm,which was used to observe biological reactions....

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  • A special method to manufacture metallic microstructures is SLM. It is one of the rare generative methods for metals and is normally taken into the list of rapid prototyping technologies. The technique is completely different than the abrasive techniques described so far.On a base platformmade of the desiredmetalmaterial, a thin layer of a metal powder is distributed. A focused laser beam is ducted along the structure lines given by a 3DCADmodel,which is controlled by a computer.With the laser exposure, themetal powder ismelted, forming a welding bead.

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