High Numerical Aperture Axial and Transverse Beam Shaping using Diffractive Optics
This work describes an implementation of an iterative algorithm to design two-zone binary phase diffractive optical elements (DOEs) which produce a specific irradiance distribution in both the axial and transverse directions under high numerical aperture focusing. The full vector character of a polarized beam is rigorously accounted for using the vector diffraction integrals. The axial and tran verse irradiance distributions are calculated for applications involving multiphoton direct la er writing, specifically, a novel method known as resolution augmentation through photo induced deactivation or, RAPID. In the RAPID method two beams are used, one for excitation and the other for de-excitation. By having both the excitation and de-excitation beams, the resolution achievable using the RAPID method is maximized.
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Bachelor of Science (B.S.)
College of Sciences
Dissertations, Academic -- Sciences;Sciences -- Dissertations, Academic
Length of Campus-only Access
Honors in the Major Thesis
Ament, Craig A., "High Numerical Aperture Axial and Transverse Beam Shaping using Diffractive Optics" (2010). HIM 1990-2015. 961.