Designing a VMI Spectrometer Lens for Mid Infrared Strong-Field and Attosecond XUV Photoionization Experiments
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Date
2011-06
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The Ohio State University
Abstract
A velocity map imaging spectrometer has been designed for experiments involving strong field and linear ionization of atoms using ultrashort laser pulses. The spectrometer will be used to replace conventional time-of-flight measuring devices for measuring the energy distribution of electrons released after ionization. A high energy resolution electrostatic lens design has been modeled for resolving photoelectron energies up to 400 eV and another design has been modeled for resolving photoelectrons up to 1 keV, which are a product ionization experiments involving intense, 3.6 μm wavelength laser pulses. The spectrometer is designed to be customizable, allowing for different lens designs and configurations for each experiment it is used for. The total project has been ongoing for approximately 1 year and will likely continue for another 4-6 months after the completion of this thesis.
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VMI Spectrometer Electrostatic Lens Design