Essays about: "Spatial harmonics"
Showing result 1 - 5 of 7 essays containing the words Spatial harmonics.
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1. Quantum Optical Description of High-order Harmonic Generation
University essay from Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionenAbstract : High-order Harmonic Generation (HHG) is a highly non-linear process in which an atom interacts with a strong laser field. The laser field lowers the atomic potential barrier allowing bound electrons to escape into the continuum through tunnel ionization, propagate, and, with some probability, recombine with the parent ion. READ MORE
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2. Focal Spot Optimization Using Spatial Light Modulation and a Phase Retrieval Algorithm
University essay from Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionenAbstract : Aberrations to the wavefront of a laser beam reduce the quality of the focal spot and are generally undesired. This project is aimed at determining the aberrations of laser beams by using a phase retrieval algorithm and to show that it is possible to correct the aberrations with a spatial light modulator to optimize the focal spot. READ MORE
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3. NH Planetary-Scale Circulation in Troposphere and Stratosphere: A Spectral and Dynamical Perspective
University essay from Uppsala universitet/Luft-, vatten- och landskapsläraAbstract : Dynamic Systems Theory (DST) and spectral analysis are employed to study the tropospheric jet stream and the stratospheric polar vortex. The objective is to investigate the relationship between Rossby wave activity and inverse persistence and dimensionality of geopotential height at 250 hPa and 10 hPa, as these two dynamical indicators are expected to show a characteristic behavior of Rossby wave harmonics. READ MORE
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4. Exploiting the Overtones in Online Localization of Sound Sources
University essay from Lunds universitet/Matematisk statistikAbstract : Localization of multiple sound sources from a microphone array is a challenging task that has been a research topic for decades. The challenges stem from the diversity of acoustic contexts due to reverberation and disturbances. READ MORE
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5. Contrastive Multimodal Image Representations for Deformable Image Registration
University essay from Uppsala universitet/Institutionen för informationsteknologiAbstract : Image registration is the process of finding correspondences between images of the same or of similar scenes. Multimodal image registration is the specific case where the images are captured with different imaging systems. READ MORE