Global ETD Search
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Showing 1 to 8 of 8 for “"Mode Selectivity"”.
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External control of semiconductor nanostructure lasers
… that can hinder the performance including the mode stability, spectral linewidth, and direct modulation capabilities. One possible method to overcome these limitations is through the use of external control techniques. The electrical and/or optical external perturbations can be implemented to …
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Dipole photonic resonators and analogs of matter
… cavities suffer from beam degrading parasitic modes that are also confined within these cavities. Several mode damping/coupling schemes have been developed to solve this problem but they add to the cost, size, and complexity of the resonant cavities. Photonic Crystal (PC) accelerators and …
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The measurement, creation and manipulation of quantum optical states via photodetection
… exhibits superior speed, dynamic range and mode selectivity compared to photon counters. Our analysis also rejects a semiclassical description of the vacuum state, with our observations supporting the quantum mechanical model. We create a new means of describing the detection signatures of …
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A THEORETICAL INVESTIGATION OF PROSPECTS FOR MODE SELECTIVE OVERTONE PHOTOCHEMISTRY (QUANTUM DYNAMICS)
… The nature of the classical dynamics for two model isomerization systems has been investigated with an assumed initially localized excitation to a high overtone vibration state of a bond oscillator. For these systems, the classical equations of motion are propagated and analyzed using …
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Parity-Time Symmetry in Lasers and Optoelectronic Oscillators
… gain, loss, and coupling coefficients for single-mode selection in lasers and optoelectronic oscillators (OEOs). This thesis focuses on the use of PT symmetry for mode selection in fiber ring lasers and OEOs. Five PT-symmetric architectures are proposed and experimentally demonstrated in this work …
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Typselektivität und Diastereoselektivität in den Oxidationen von chiralen oxazolidinonsubstituierten Encarbamaten mit Singulettsauerstoff, Dimethyldioxiran und meta-Chlorperbenzoesäure
In der vorliegenden Dissertation wurde die Selektivität der Oxidation von chiralen oxazolidinonsubstituierten Encarbamten I mit Singulettsauerstoff, Dimethyldioxiran (DMD) und meta-Chloroperbenzoesäure (mCPBA) untersucht. Durch die Variation der Encarbamatstruktur wurde die Typselektivität …
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Selective mode coupling in microring resonators for single mode semiconductor lasers
Single mode semiconductor laser diodes have many applications in optical communications, metrology and sensing. Edge-emitting single mode lasers commonly use distributed feedback structures, or narrowband reflectors such as distributed Bragg reflectors (DBRs) and sampled grating distributed Bragg …
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The Analysis and Design of Phase-tunable Low-Power Low-Phase-Noise I/Q Signal Sources for Analog Phase Calibrated Transceivers
… stringent performance requirements dictated by modern wireless standards particularly as the technology scales into the sub-100nm regime, necessitating both phase and gain calibration of the mismatched I/Q channels post-fabrication. Given the necessity for precise RF quadrature signal synthesis, …