Patents by Inventor Lee J. Missaggia

Lee J. Missaggia 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).

  • Tapered semiconductor laser oscillator
    Patent number: 5555544
    Abstract: A semiconductor laser oscillator structure and method is described having a tapered gain region in one-half of a laser cavity and a confocal oscillator region in another half of the cavity. An aperture is formed between two pairs of cavity spoilers located between the two cavity halves. One pair of spoilers is provided for receiving light which is reflected off of an output facet back into the semiconductor and removing it from the gain region. The other pair of spoilers removes light reflected from a curved mirror surface formed at the end of the other laser cavity half.
    Type: Grant
    Filed: April 4, 1994
    Date of Patent: September 10, 1996
    Assignee: Massachusetts Institute of Technology
    Inventors: James N. Walpole, Emily S. Kintzer, Stephen R. Chinn, Christine A. Wang, Lee J. Missaggia