Generating zero-order Bessel beams with an elastomeric replica of a Philippine weevil carapace

The Department of Physics
School of Science and Engineering

invites the public to the final dissertation presentation titled

“Generating zero-order Bessel beams with an elastomeric replica of a Philippine weevil carapace” 

by

PAZ VICTORIA T RAMOS
PhD Physics Candidate

on

August 14, 2024 (Wednesday)
5:00 PM to 6:30 PM
CTC 507

Dissertation Adviser

Raphael A Guerrero, PhD
 

Panel Members

Dominic Guana, PhD
Emmanuel D Delocado, PhD
Ramon M delos Santos, PhD
Jose Mario Diaz, PhD

Abstract

A zero-order Bessel beam is generated with a laser beam focused onto an elastomeric replica of a weevil carapace scale. Carapace surface structures are imprinted on an elastomeric cast via soft lithography. The output Bessel beam exhibits the expected properties of non-diffraction over a propagation range of 30 cm. The width of the central spot at a propagation distance of 25 cm is 296.8 μm, corresponding to a replicated weevil scale with a diameter of 64.3 μm acting as an annular slit. Self-healing of the beam after encountering a wire obstruction is also observed.