Patents by Inventor Joonho Back

Joonho Back has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • III-NITRIDE-BASED VERTICAL CAVITY SURFACE EMITTING LASER (VCSEL) CONFIGURATIONS
    Publication number: 20220239068
    Abstract: Vertical Cavity Surface Emitting Laser (VCSEL) configurations are disclosed. In a first example, the VCSEL includes a III-Nitride active region between a p-type III-Nitride layer and an n-type III-Nitride layer; and a curved minor on or above the p-type III-Nitride layer. The curved mirror can be formed in a III-Nitride layer or a Transparent Oxide (TO) material and enables the formation of a long VCSEL cavity that improves VCSEL lifetime, VCSEL output power, VCSEL power efficiency and VCSEL reliability. In a second example, the VCSEL has an active region with a high indium content. In a third example, the VCSEL is transparent.
    Type: Application
    Filed: May 28, 2020
    Publication date: July 28, 2022
    Applicant: The Regents of the University of California
    Inventors: Jared Kearns, Daniel A. Cohen, Joonho Back, Nathan Palmquist, Tal Margalith, Steven P. DenBaars, Shuji Nakamura