Ultrasmall Cavity with Reflecting Metasurfaces

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2014-KILD-66743
Minimizing the dimensions of parallel mirror cavities is vital for many areas of optics. Currently in the field, there are several available methods, such as using a negative index metamaterial layer, using photonic crystal cavities, and using slow surface plasmon wave cavities. However, the existing methods can either be too complex to use, cause lots of losses in the process, or not be efficient enough.

Researchers at Purdue University have developed a new technology that uses reflecting metasurfaces instead of conventional mirrors to introduce any desired phase shift. This technology is easier to fabricate, more practical to implement, and has lower losses. It provides smaller cavities and has resonant modes that are more compatible and highly matched to conventional optical devices.

Advantages:
-More practical
-Lower losses and smaller cavities
-More compatible to conventional optical devices

Potential Applications:
-Minimizing dimensions of optical cavities
-Laser spectroscopy
-Frequency combs
Jan 30, 2015
Utility Patent
United States
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Jan 30, 2014
Provisional-Patent
United States
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Purdue Office of Technology Commercialization
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