Work

Generalized rainbows of oblate water drops in air recorded using a TinyLev ultrasonic levitator

Year: 2025

Type: article

Abstract: The generalized rainbow caustics in the scattering of laser light by acoustically levitated oblate water drops in air [Marston and Trinh, Nature 312, 529-531 (1984)] display relationships between optical wavefields and the shape of wavefronts. The shape of the scattered optical wavefront depends on the drop shape controlled by the levitator. The present investigation demonstrates that an alternative array-based ultrasonic levitator design known as "TinyLev" can be used to trap drops for the purpose of recording generalized rainbows. The hyperbolic umbilic focal section was viewed. The TinyLev combined with CCD-based imaging may make investigations of generalized rainbows more accessible.

Source: JASA Express Letters

DOI: 10.1121/10.0039513

Authors: Arden C. Handy, Philip L. Marston

Institution: Washington State University

Language: English

Topic: Orbital Angular Momentum in Optics

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: diamond

Funders: College of Arts and Sciences, Washington State University, Office of Naval Research

Award: G2520738778