# Optical transition

Xem 1-20 trên 20 kết quả Optical transition
• ### Báo cáo " Optical transition of Eu3+ in Mg(Al1-x Eux)2O4 "

The powders of Mg(Al1-xEux)2O4 have been synthesized by sol-gel method. Optical properties of the material were investigated. The nature of lines in luminescence spectra is related to the electron transitions of Eu3+ ions corresponding to different sites in the lattice. The influence of Eu concentration on optical spectra was studied.

• ### Báo cáo hóa học: " Effects of Shape and Strain Distribution of Quantum Dots on Optical Transition in the Quantum Dot Infrared "

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Effects of Shape and Strain Distribution of Quantum Dots on Optical Transition in the Quantum Dot Infrared

• ### Vibrational Optical Activity Principles and Applications

During the years surrounding the new millennium, the field of vibrational optical activity (VOA), comprised principally of vibrational circular dichroism (VCD) and vibrational Raman optical activity (ROA), underwent a transition from a specialized area of research that had been practiced by a handful of pioneers into an important newfield of spectroscopy practiced by an increasing number of scientists worldwide. This transition was made possible by the development of commercial instrumentation and software for the routine measurement and quantum chemical calculation ofVOA.

• ### 2 - Interaction of Electrons and Photons

This chapter provides the basis for the discussion in the following chapters by summarizing the fundamental concepts and the quantum theory concerning the interaction between electrons and photons in a form that is convenient for theoretical analysis of semiconductor lasers [1–9]. First, quantization of electromagnetic fields of optical waves is outlined, and the concept of a photon is clarified. Quantum theory expressions for coherent states are also given. Then the quantum theory of electron–photon interactions and the general characteristics of optical transitions are explained. ...

• ### Tunable Lasers

Excimer lasers are pulsed gas lasers that intrinsically offer efficient and powerful broadband emission at several spectral regions throughout the ultraviolet. The spectral widths are typically 2 nm. An exception to this categorization is the XeF laser urith its broadly tunable C+A transition (approximately 50 nm) in the visible. The broad tunability results from the steeply repulsive A state.

• ### SEMICONDUCTORS AND SEMIMETALS

Hydrogenated amorphous silicon, a new form of a common element, is a semiconductor that has come of age. Its scientific attractions include a continuously adjustable band gap, a usable camer lifetime and diffusion length, efficient optical transitions, and the capability of employing either nor p-type dopants. Furthermore, it can be fabricated very easily as a thin film by a technology that not only inherently escapes the expenst: of crystal perfection but also requires significantly smaller amounts of raw materials....

• ### TrueNet® Fiber Optic Cable

ADC’s innovative line of indoor/outdoor loose tube cables are designed to meet all the rigors of the outside plant environment and have the necessary fire ratings to be installed inside the building. These cables eliminate the messy gel filler of traditional loose tube style cables with super absorbent polymers. The installer can place the cable anywhere in the network, bypassing the transition points required in most installations. Cables are available with fiber counts from 2 to 144.

• ### PROBLEMS IN LASER PHYSICS

There is hardly any book that aims at solving problems typically encountered in the laser field, and this book intends to fill the void. Following some initial exercises related to general aspects in laser physics (Chapt. I), the subsequent problems are organized along the following topics: (i) Interaction of radiation with matter either made of atoms or ions, weakly interacting with surrounding species, or made of more complicated elements such as molecules or semiconductors (Chapters 2 and 3). (ii) Wave propagation in optical media and optical resonators (Chapters 4 and 5)....

• ### Sculpture of the Twentieth Century

The prototype of the barbute may be seen in a basinet from Chalcis, dating from 4I 0 to I440, portrayed in the drawings. It retains vervelles along the edges for attaching a camail. Minus the camail, and with a rounded bowl to conform with the contour of the head, this helmet would qualify as a barbute. In fact, the transition from basinet to barbute is largely a change in propor- tion. Some basinets were so tall that they rested on ...

• ### OptEnet™ Optical Extension Platform

The ADC OptEnet™ Optical Extension Platform is a carrier-class, intelligent, scalable platform capable of handling any network’s Ethernet or SONET media transitions. Bridging the gap between legacy copper infrastructures and fiber growth, the OptEnet platform provides the most economical evolution path. Integrated intelligence allows the user to remotely monitor system performance and transmit alarm conditions to upstream operational support systems.

• ### Fiber Optic Cable Armored In/Outdoor Dry Loose Tube Cables: Riser

ADC’s innovative line of indoor/outdoor armored loose tube cables are designed to meet all the rigors of the outside plant environment and have the necessary fire ratings to be installed inside the building. These cables eliminate the messy gel filler of traditional loose tube style cables with super absorbent polymers. The installer can place the cable anywhere in the network, bypassing the traditional transition points required in most installations. Cables are available with fiber counts from 2 to 144 fibers....

• ### CATHODOLUMINESCENCE

Cathodoluminescence (CL) is a non-destructive technique to characterize optical and electronic properties of nanostructures in many kinds of materials. Major subject is to investigate basic parameters in semiconductors, impurities in oxides and phase determination of minerals. CL is similar to photoluminescence (PL) technique, but the excitation by high energy electrons can produce all the transition to the higher energy excitation states and induce light emission in the wide energy range concerned with versatile types of electronic transitions in materials....

• ### Báo cáo hóa học: " Excitonic Transitions and Off-resonant Optical Limiting in CdS Quantum Dots Stabilized in a Synthetic Glue Matrix"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Excitonic Transitions and Off-resonant Optical Limiting in CdS Quantum Dots Stabilized in a Synthetic Glue Matrix

• ### Báo cáo " Effect of Cr$^{3+}$ concentration on structural and optical properties of ZnAl$_2$O$_4$:Cr$^{3+}$ "

Zn(Al$_{1-x}$Cr$_x$)$_2$O$_4$ powders with Cr$^{3+}$ contents ranging from x = 0.005 to 0.3 have been synthesized by sol-gel method using the following precursors: zinc nitrate (Zn(NO$_3$)$_2\cdot6$H$_2$O), aluminium nitrate (Al(NO$_3$)$_3\cdot9$H$_2$O), chrome nitrate (Cr(NO$_3$)$_3\cdot9$H$_2$O), and citric acid. The effect of the Cr$^{3+}$ concentration on structural and optical properties of the synthesized samples has been studied.

ADC’s Quad Loop Extender (QLX) 3192 shelf adapter is an adapter board that allows for an ADC Soneplex QLX module to be plugged into an industry-standard 3192 office repeater shelf. The QLX 3192 shelf adapter also supports an optional ADC System Controller Unit (SCU) for system management and craft port access.

• ### Assadi et al. Nanoscale Research Letters 2011, 6:357

Assadi et al. Nanoscale Research Letters 2011, 6:357 http://www.nanoscalereslett.com/content/6/1/357 NANO REVIEW Open Access Structural and electronic properties of Eu- and Pd-doped ZnO Mohammad Hussein Naseef Assadi1,2, Yuebin Zhang2, Rong-Kun Zheng1, Simon Peter Ringer1 and Sean Li2* Abstract Doping ZnO with rare earth and 4d transition elements is a popular technique to manipulate the optical properties of ZnO systems. These systems may also possess intrinsic ferromagnetism due to their magnetic moment borne on 4f and 4d electrons.

• ### Table and Contents

The reality of today’s marketplace dictates that service provider networks change to remain competitive. New modulation techniques. Faster metro optical fiber rings. Voice, high-speed data and multimedia services deployed closer than ever to the edge of the network. These changes are largely upgrades and reconfigurations designed to improve reliability, availability, accuracy and breadth of services.

• ### 600 mm Products Introduction

The reality of today’s marketplace dictates that service provider networks change to remain competitive. New modulation techniques. Faster metro optical fiber rings. Voice, high-speed data and multimedia services deployed closer than ever to the edge of the network. These changes are largely upgrades and reconfigurations designed to improve reliability, availability, accuracy and breadth of services.

• ### OmniReach™ FTTX Solutions Indoor/Outdoor Drop Cable Assemblies

ADC’s rugged, high performance Indoor/Outdoor Drop Cables are used in FTTP networks to make drop connections from Fiber Distribution Terminals to the Optical Network Terminal (ONT) at the living unit typically found in multiple dwelling unit (MDU) applications. Applications include, but are not limited to situations where cables are transitioning from an outdoor to indoor environment. The bulk non-connectorized cable is shipped on small spools for easy payoff.