Patents Represented by Attorney, Agent or Law Firm William Wright
  • Patent number: 6157663
    Abstract: A solid-state laser includes a high-absorption coefficient solid-state gain medium such as Nd:YVO.sub.4 that is side pumped with a semiconductor laser diode array. The resonant cavity of the solid-state laser is positioned so that the TEM.sub.00 mode is spaced from the face of the laser through which the laser is pumped by a distance sufficient to reduce diffraction losses but sufficiently near to allow coupling of pump light into the gain mode. The gain medium, the doping level of the gain medium, and the operating temperature of the pump laser are selected to efficiently couple pump light into the gain mode. The pump laser is positioned to side pump the gain medium without collimating or focusing optics between the pump laser and the face of the gain medium. A gap between the pump laser and the gain medium is empirically selected to match the angular extent of the pump laser output light to the height of the gain mode at the position of the gain mode fixed to optimize coupling and diffraction losses.
    Type: Grant
    Filed: April 16, 1998
    Date of Patent: December 5, 2000
    Assignee: 3D Systems, Inc.
    Inventors: Xingkun Wu, Jouni P. Partanen, William F. Hug, Hamid Hemmati
  • Patent number: D441871
    Type: Grant
    Filed: October 7, 1999
    Date of Patent: May 8, 2001
    Inventor: Ruth Fedale