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Updated: Apr 21, 2026

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry

Published on: August 12, 2013

Surface gravity-wave lensing.

Ryan B Elandt¹, Mostafa Shakeri¹, Mohammad-Reza Alam¹

¹Department of Mechanical Engineering, University of California, Berkeley, California 94720, USA.

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics

|October 30, 2014

Summary

This summary is machine-generated.

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Small seabed features can create gravity wave lenses, focusing or dispersing ocean waves. This technology offers new possibilities for wave energy harvesting, artificial surf zones, and creating protected marine areas.

Area of Science:

Fluid dynamics
Oceanography
Wave physics

Background:

Oceanic surface waves are influenced by seabed topography.
Nonlinear resonance, specifically Bragg resonance, occurs between surface waves and small seabed features.
Understanding wave behavior is crucial for marine engineering and coastal management.

Purpose of the Study:

To investigate the potential of using seabed topography to manipulate surface gravity waves.
To demonstrate the creation of gravity wave lenses and their focusing/defocusing capabilities.
To explore the application of these wave lenses for practical purposes such as energy harvesting and coastal protection.

Main Methods:

Utilizing nonlinear resonance (Bragg resonance) between oceanic surface waves and seabed features.

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Last Updated: Apr 21, 2026

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry

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Published on: August 12, 2013

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Designing specific seafloor topographies to act as lenses or curved mirrors for surface gravity waves.

Analyzing the effects of polychromatic topography on broadband incident wave spectra.

Main Results:

Demonstrated that small, noninvasive changes in seafloor topography can create effective gravity wave lenses.
Showcased the ability of these lenses to focus or defocus wave energy to desired focal points.
Confirmed that broadband wave lensing can be achieved with polychromatic topography.

Conclusions:

Gravity wave lenses offer a novel, noninvasive method for controlling oceanic wave energy.
Applications include enhancing wave energy harvesting, creating artificial surf zones, and developing protected areas.
Natural seabed features may also cause wave lensing, potentially explaining rogue wave phenomena.