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Showing 1 to 20 of 138 for “"Erbium"”.
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Structural and magnetic properties of erbium thin films and erbium/yttrium superlattices
… and structural properties of crystalline erbium thin films and Er/Y superlattices, grown by Molecular Beam Epitaxy, have been analyzed by x-ray scattering, bulk magnetization measurements and neutron diffraction. By comparing the data for the two systems, the effects of the interfacial …
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Effect Of Germanium Doping On Erbium Sensitization In The Erbium Doped Silicon Rich Silica Material System
… as silicon compatible light sources. Thin erbium-doped silica films containing excess silicon and germanium were deposited using a multi-gun sputter system. The composition of the deposited materials was verified by Rutherford Backscattering Spectrometry. Samples from each deposition were …
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Integrated erbium lasers in silicon photonics
… present results on the development of integrated erbium-doped aluminum oxide lasers on a silicon photonics platform. A key achievement in this work is a scalable laser design for high output power and ultra-narrow linewidth performance. Using a novel wavelength-insensitive design, a CMOS …
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Stable multiwavelength erbium-doped random fiber laser
Multiwavelength fiber lasers which consist of equally-spaced frequency components have found many applications and that includes as light sources for optical communication systems. One of the techniques available to generate such multiple wavelengths is random fiber lasers. Despite simplicity in …
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Energy exchange processes in erbium-doped fluoride glasses
In recent years there has been considerable interest in cross relaxation processes between ions in rare earth doped glasses and crystals. In particular interest has focused on diode-pumped lasers and optical waveguide amplifiers based on rare earth ions. This thesis is concerned with developing a …
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Silicon nanocrystals: from bio-imager to erbium sensitizer
… to various topics ranging from bio-imaging to erbium ion sensitization. Silicon nanocrystals as bio-imaging agent have been investigated by employing colloidal dispersion of individual silicon nanocrystals where surface properties could be controlled to a great extent. By using a suitable …
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Additive pulse mode-locked erbium-doped fiber lasers
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1995.
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Erbium doped silicon as an optoelectronic semiconductor material
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1994.
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Laser (Cooling) Refrigeration in Erbium Based Solid State Materials
… this study was to investigate the potential of erbium based solid state materials for laser refrigeration in bulk material. A great deal of work in the field has been focused on the use of ytterbium based ZBLAN glass. Some experiments have also reported cooling in thulium based solid state …
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Generation of pulsed dual wavelength erbium doped fiber laser
… and strong homogeneous line broadening faced by erbium doped fiber (EDF). Therefore, the aim of this thesis is to generate a single and dual wavelength fiber laser and pulsed fiber laser by using fiber Bragg grating (FBG) in single ring and Figure-8 configurations at 1550 nm and 1560 nm. Analysis …
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Defect characterization of erbium doped silicon light emitting diodes
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1994.
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THE SYNTHESIS, CHARACTERIZATION, AND UPCONVERTING PROPERTIES OF ERBIUM DOPED; YTTERBIUM, ERBIUM CO-DOPED YTTRIUM OXYSULFIDE PHOSPHORS UNDER 808, 980, AND 1560 nm EXCITATION
… emission intensities for singly doped erbium phosphors excited at 808 and 980 nm indicated a two-photon excitation process. Likewise, the ytterbium and erbium co-doped phosphors excited at 980 nm also indicated a two-photon excitation process. Doping with 10% erbium showed the most …
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Electronic structure and light emission from erbium centers in silicon
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1995.
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Mode-locking of thulium-doped and Erbium-doped fiber lasers
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1997.
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High-power cladding-pumped Raman and erbium-ytterbium doped fibre sources
… lasers have been based on highly efficient ytterbium-doped fibre, while progress to power-scale other rare-earth doped fibres and fibre Raman laser has been much more modest.<br/><br/>This thesis can be divided into two main themes. The first concerns the power-scaling and study of …
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Erbium-ytterbium-yttrium compounds for light emission at 1.54[mu]m
… the optical signal to different microprocessors. Erbium ions (Er3+) are an excellent candidate to provide amplification around [lambda] = 1.54[mu]m for optical telecommunications. Erbium-doped fiber amplifiers (EDFAs) have already enabled long-haul optical data transmission through silica optical …
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Process integration of erbium-doped silicon light-emitting diodes and MOSFETs
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1996.
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Remote temperature sensing with low-threshold-power using erbium-doped fiber laser
… a remote temperature sensor that utilizes erbium-doped fiber laser (EDFL). The configuration of the laser cavity is linear, comprising a fiber mirror reflector at one end, and the other end is formed by a fiber Bragg grating (FBG) with central wavelength of 1560 nm as the sensor head. A 30 …
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