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Title: Σχεδιασμός και κατασκευή ολογραμμάτων με τεχνικές laser σε μεταλλικές επιφάνειες
Other Titles: Design and fabrication of computer generated holograms with laser techniques on metallic surfaces
Authors: Μπουχούρη, Άγγελος
Keywords: Ολογράμματα
Κατασκευή ολογραμμάτων
Keywords (translated): Computer generated holograms
Fabrication of CGH
Abstract: Σχεδιασμός ολογραμμάτων με την βοήθεια υπολογιστή παραμετροποιώντας μια συνάρτηση κόστους ώστε να λαμβάνεται υπόψιν οι κατασκευαστικοί παράγοντες και περιορισμοί κατα τον σχεδιασμό τους. Κατασκευή κώδικα προσομοίωσης σε διάταξη 2f για εξέταση των ολογραμμάτων. Κατασκευή των ολογραμμάτων σε ατσάλινη επιφάνεια με χρήση fiber λέιζερ και εξέταση των αποτελεσμάτων.
Abstract (translated): The purpose of this thesis is the design and fabrication of computer-generated holograms taking into consideration various factors. Beginning with an introduction to holography, its mathematical description and current applications we procced to the fundamentals of designing holograms using computers. Cost functions and optimization algorithms are introduced followed by procedures of fabricating CGH such as fiber laser micromachining. On the second part of the thesis, theory from the first part in implemented and a program simulating diffraction and propagation is coded. Furthermore, a program designing CHM is written that has the options to design based on square or cyclical pixel shape. A custom cost function is integrated on the program that forces changes based on the density of pixel to be engraved by the laser. In the end, the CGH that where designed by the program and fabricated using a fiber laser were evaluated using optical reconstruction. Both programs’ results are compared to a commercially available optical design software to check the validity of the programs’ results.
Appears in Collections:Τμήμα Φυσικής (ΜΔΕ)

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