An Inverse Electromagnetic Design algorithm is presented that can efficiently solve for optimal shapes of electromagnetic devices, such as antennas, surface textures and gratings. The algorithm was implemented in software along with techniques to represent non-parametric or freeform shapes, which allow the optimization to explore non-intuitive solutions. This Inverse Design Software was then used to design optical antennas for Heat-Assisted Magnetic Recording to efficiently deliver energy to a sub-wavelength spot. The optical system that is proposed here consists merely of a rectangular waveguide and a planar antenna, a simple and inexpensive solution that outperforms the complicated designs from the key players in the data storage industry.
Title
Inverse Electromagnetic Design of Optical Antennas for Heat-Assisted Magnetic Recording
Published
2012-12-14
Full Collection Name
Electrical Engineering & Computer Sciences Technical Reports
Other Identifiers
EECS-2012-248
Type
Text
Extent
18 p
Archive
The Engineering Library
Usage Statement
Researchers may make free and open use of the UC Berkeley Library’s digitized public domain materials. However, some materials in our online collections may be protected by U.S. copyright law (Title 17, U.S.C.). Use or reproduction of materials protected by copyright beyond that allowed by fair use (Title 17, U.S.C. § 107) requires permission from the copyright owners. The use or reproduction of some materials may also be restricted by terms of University of California gift or purchase agreements, privacy and publicity rights, or trademark law. Responsibility for determining rights status and permissibility of any use or reproduction rests exclusively with the researcher. To learn more or make inquiries, please see our permissions policies (https://www.lib.berkeley.edu/about/permissions-policies).
