Results 71 to 80 of about 129,758 (300)
Electrically pumped all photonic crystal 2nd order DFB lasers arrays emitting at 2.3 μm
APL Photonics, 2017 Single-mode, widely tunable laser diodes in the mid-infrared range are highly interesting for demanding spectroscopic applications involving multi-species discrimination. We report on an alternative approach using single frequency laser arrays.
B. Adelin +8 more
doaj +1 more source
Transverse mode control and switching in gas laser arrays [PDF]
, 1994 Theoretical and experimental investigations of multiple transverse mode laser oscillation involving spatially varying gain and loss are carried out. The effect of gain and loss distribution on mode competition is analyzed.
Bridges, William B., Zhang, Yongfang
core +1 more source
Thermophysical Properties of the Desulphurization Slags With Various CaS and CaO/Al2O3 Ratio
Advanced Engineering Materials, EarlyView.This article investigates how CaS content and the CaO/Al2O3 ratio influence the thermophysical properties of desulphurization slags. Using experimental measurements and thermodynamic simulations, this study reveals complex effects on viscosity, surface tension, and density, providing new insight into slag structure and phase behavior under ...
Eldar Salpagarov +4 more
wiley +1 more source
Effect of Low-power Laser on Treatment of Orofacial Pain
Journal of Dental Research, Dental Clinics, Dental Prospects, 2010 Low-power lasers are a group of lasers with a power less than 250 mW and unlike high-power lasers they have no effect on tissue temperature; they produce light-dependent chemical reactions in tissues.
Hamid Reza Khalighi +5 more
doaj
Diffused guides for distributed-feedback lasers [PDF]
, 1975 Proposed waveguide is hollow cylindrical pipe. Inside channel surface is infused with gas or metal molecules, forming periodic cross sections along entire length. Light is scattered at periodic infusions, resulting in distributed feedback.
Elachi, C.
core +1 more source
Femtosecond x-ray diffraction from an aerosolized beam of protein nanocrystals [PDF]
, 2017 We demonstrate near-atomic-resolution Bragg diffraction from aerosolized single granulovirus crystals using an x-ray free-electron laser. The form of the aerosol injector is nearly identical to conventional liquid-microjet nozzles, but the x-ray ...
Adriano, Luigi +24 more
core +4 more sources
Removing Oxide Layers and Retaining Oxide‐Free Steel Surfaces by Polishing in Oxygen‐Free Atmosphere
Advanced Engineering Materials, EarlyView.In this study, the efficacy of wet mechanical polishing under an oxygen‐free atmosphere for deoxidation and the retention of an oxide‐free steel surface are elucidated using X‐ray photoelectron spectroscopy. The methodology proved successful; however, the results were highly dependent on the preparation of the solvents used to clean the samples after ...
Friedrich Bürger +2 more
wiley +1 more source
Uso de diodos emissores de luz (LED) de potência em laboratório de Óptica
Caderno Brasileiro de Ensino de Física, 2013 Após iluminar casas, edifícios e ruas há mais de 100 anos, a lâmpada incandescente criada por T. A. Edison, em breve se tornará uma relíquia do passado.
Luiz Pinheiro Cordovil da Silva +3 more
doaj +1 more source
Investigation of RF excited CW CO2 waveguide lasers [PDF]
The RF excited 2 to 3W CW CO2 waveguide lasers with lifetimes of the order of 10(4) to 2.10(4) hours were produced. This was achieved with CO and N2 bearing gas mixtures and with internal as well as external discharge electrodes.
Hochuli, U.
core +1 more source
Ion lasers-the early years [PDF]
, 2000 The paper is a personal, anecdotal history of the discovery and early development of ion lasers, particularly the argon ion laser. A brief discussion of the mechanisms that make this laser work, and the engineering challenges and developments that make ...
Bridges, William B.
core +1 more source