Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 13 of 13 for “"laser control"”.
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Laser-control of molecular dynamics
In this work a new algorithm to determine quantum control fields from the instantaneous response of systems has been developed. The derived fields allow to establish a direct connection between the applied perturbation and the molecular dynamics. The principle is most easily illustrated in …
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Programmable System for Laser Control of Trapped-Ion Experiments
… demand exceptional precision, especially when controlling laser pulses for trapped-ion systems. Recent optical breakthroughs now pack dozens of channels onto a single chip, enabling efficient multichannel laser control. However, the supporting electronics often lack the necessary timing …
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NeuralSTA: a software tool for neural stimulation and recording applications with a laser control
… use for neural stimulation or as a power control signal to a laser. NeuralSTA is designed to generate arbitrary waveforms of stimulation and simultaneously record the neural response while implementing the spike triggered averaging (STA) method, hence the name NeuralSTA. The output …
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Control of a fast steering mirror for laser-based satellite communication
… a platform capable of sending and receiving laser communication signals in space from Mars. The two main components of the pointing system on the spacecraft include an inertial reference frame to provide coarse laser control and a Fast Steering Mirror to remove any spacecraft jitter from the …
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A control system for laser trimming thick film resistors and the reliability effects
… The work in this thesis concerns the laser trimming of resistor components to a tight tolerance. It is the objective of this thesis to address the performance of an Nd:YAG laser operation and interface with a computer. The first task involves a computer hardware system to be interfaced …
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Swept-Frequency Sampled Grating Distributed Bragg Reflector Lasers Optimized for Optical Coherence Tomography Applications
… grating distributed Bragg reflector (SG-DBR) laser provides wide wavelength tuning range while exhibiting a wavelength switching speed that is among the fastest currently available. The SG-DBR laser is used to generate linear frequency ramps with high repetition rates. Since the SG-DBR laser …
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Quantum dynamics in laser–assisted collisions, laser–molecule interactions, and particle–surface scattering
… applied to ion – atom collisions in a strong laser field, the vibrational nuclear motion in small homonuclear diatomic molecular ions, and for the scattering of an ion in front of a metallic surface. For laser-assisted proton – hydrogen collisions it is shown, that strong circularly polarized …
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Design of an Optical Fiber-Coupled Sensor for Ambient Methane Measurement
A tunable diode laser system was developed for remote monitoring of ambient methane using fiber optically connected all-optical sensor heads. Experiments were performed to quantitatively evaluate the influence of selected system hardware and software configurations, with the further goal of …
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Adaptive control of electronic excitation utilizing ultrafast laser pulses
… interaction of matter with pulses of femtosecond laser radiation. The experiments presented here were performed in the gas phase and involve one atomic and several model molecular systems. Absorption of femtosecond laser radiation by these systems induces an electronic excitation, and subsequently …
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Ultrashort pulse generation from diode laser devices
… of ultrashort optical pulses from diode lasers. Simple and cost-effective techniques were used to generate high power, high quality optical short pulses at various wavelength windows. The major achievements presented in the thesis is summarised as follows. High power pulses generation is …
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Stickstoffinversion in Azacyclen : Modellsimulationen für einen molekularen Schalter
… mittels zweier linear polarisierter IR-Laserpulse durch sogenanntes “ladder climbing” in die andere überführt werden kann.
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Controlled Fabrication System of Fabry-Perot Optical Fiber Sensors
… challenging work. In this thesis, a system for controlled fabrication of Fabry-Perot optical fiber sensors is developed and presented as the first attempt for the long-term goal of automated EFPI sensor fabrication. The sensor fabrication control system presented here implements a real-time …
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Optimización de campos de tensiones residuales en procesos de tratamiento superficial de materiales metálicos mediante ondas de choque generadas por láser
… mediante ondas de choque generadas por laser desde un punto de vista descriptivo de la tecnologáa, siendo los principales puntos en los que se hace hincapie: Introduccion a los procesos de tratamiento de materiales mediante ondas de choque generadas por laser y sus aspectos …