Search Results - benjamin+williams

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2015-797 External Cavity Laser Based Upon Metasurfaces

SUMMARYUCLA researchers in the Department of Electrical Engineering have developed a novel approach for terahertz (THz) quantum-cascade (QC) lasers to achieve scalable output power, high quality diffraction limited, and directive output beams.BACKGROUNDIt is challenging for many types of semiconductor lasers to achieve a symmetric, directive, diffraction-limited,...

Published: 2/14/2025 | Inventor(s): Benjamin Williams, Luyao Xu

Keywords(s): Imaging, Medical Imaging, Photonics

Category(s): Medical Devices > Medical Imaging, Software & Algorithms > Security & Privacy, Optics & Photonics

2017-221 Focusing and Amplifying Reflectarray Metasurfaces for Stable Laser Cavities

Focusing And Amplifying Reflectarray Metasurfaces For Stable Laser CavitiesSUMMARYUCLA researchers in the Department of Electrical Engineering have developed a novel design of reflectarray metasurface that focuses and amplifies THz laser beams with record high efficiency and stability.BACKGROUNDTerahertz (THz) lasers are widely applicable in THz imaging...

Published: 2/14/2025 | Inventor(s): Benjamin Williams, Luyao Xu

Keywords(s): Antennas/Wireless, Electronics & Semiconductors, Photonics

Category(s): Electrical > Electronics & Semiconductors, Electrical > Wireless, Optics & Photonics

Grating-Based Quantum-Cascade Vertical External Cavity Lasers in the Terahertz and Mid-Infrared

UC Case 2018-432SUMMARY:UCLA researchers in the Department of Electrical Engineering have developed grating-based quantum-cascade vertical external lasers that operate in the terahertz and mid-infrared range.BACKGROUND:Mid-infrared (IR) quantum-cascade (QC) lasers with high output power and excellent near-diffraction beam patterns are of strong interest...

Published: 2/14/2025 | Inventor(s): Benjamin Williams

Keywords(s): Electronics & Semiconductors, Optics, Photonics, Semiconductors

Category(s): Electrical > Electronics & Semiconductors, Materials > Semiconducting Materials, Materials > Fabrication Technologies, Optics & Photonics