Patents Assigned to Jenoptik Laserdiode GmbH
  • Patent number: 7483456
    Abstract: In a diode laser module and a method for the production thereof, there is a need to fix the optical elements required for collimating, beam shaping and/or beam rearrangement of the radiation of a laser diode element with high reproducibility and long-term stability in an optically aligned manner, wherein the optically aligned state is produced by a successive adjustment of the optical elements in the beam of the switched-on laser diode element. It must be ensured that the fixing can be carried out in a process that is at least partially automated. At least one intermediate carrier is arranged on a heat-dissipating carrier serving to cool the laser diode element. The heat conductivity of the intermediate carrier is less than that of the heat-dissipating carrier, and the alignment of the optical components and fixation by sequential soldering is carried out on the surface of the intermediate carrier.
    Type: Grant
    Filed: November 23, 2005
    Date of Patent: January 27, 2009
    Assignee: JENOPTIK Laserdiode GmbH
    Inventors: Hartmut G. Haensel, Petra Hennig, Dirk Lorenzen, Guido Bonati
  • Publication number: 20090016398
    Abstract: A laser radiation source which is scalable with respect to output is designed in such a way that laser diode elements can be arranged on a carrier so as to be stacked equidistantly and with low stress at a low manufacturing cost. The laser radiation source comprises a vertical stack of laser diode elements contacted on both sides via electrically conductive substrate layers, and at least one multi-layer carrier comprising a first and a second metallic layer which are separated by at least one electrically insulating layer of nonmetallic material. At least one of the metallic layers is divided into metallic layer regions which are arranged adjacent to one another and at a distance from one another. Oppositely polarized substrate layers of adjacent laser diode elements are arranged on common layer regions of a metallic layer. Collimating lenses serve to collimate the radiation emitted by the laser diode elements.
    Type: Application
    Filed: January 16, 2007
    Publication date: January 15, 2009
    Applicant: JENOPTIK LASERDIODE GMBH
    Inventors: Dirk Lorenzen, Petra Hennig, Matthias Schroeder, Ulrich Roellig
  • Patent number: 7369589
    Abstract: Expansion-adapted mounting and electrical contacting of laser diode elements are connected with one another in terms of structural engineering such that the laser diode elements can be stacked or arranged laterally in one plane for producing vertical diode laser arrangements with low production complexity. The upper and the lower layers of a heat-distributing multilayer substrate for a diode laser subelement, between which a separating layer is disposed, contain metal strata regions arranged spaced from one another of which for forming strata region pairs each strata region of the upper layer is joined electrically conducting to a strata region of the lower layer. The separating layer contains at least one electrically insulating stratum made of non-metallic material and the sum of the thicknesses of metallic strata in the multilayer substrate exceeds the sum of the thicknesses of non-metallic strata at least in a partial region perpendicular to the mounting surface for at least one laser diode element.
    Type: Grant
    Filed: December 22, 2004
    Date of Patent: May 6, 2008
    Assignee: Jenoptik Laserdiode GmbH
    Inventor: Dirk Lorenzen
  • Patent number: 6975034
    Abstract: The invention refers to a novel semiconductor module with at least one semiconductor element in the form of a laser diode or laser diode arrangement, whereby the semiconductor element is provided with an area of a multi-layer substrate, which at least in a partial area is designed as a micro-cooler through which cooling medium flows, and which has connectors for supplying and discharging cooling medium.
    Type: Grant
    Filed: June 19, 2003
    Date of Patent: December 13, 2005
    Assignee: Jenoptik Laserdiode GmbH
    Inventors: Petra Hennig, Guido Bonati, Ulrich Rollig, Dirk Lorenzen
  • Patent number: 6898222
    Abstract: A diode laser arrangement is disclosed wherein a radiation source is designed which can be scaled with respect to power such that different types of cooling can be applied and the configuration of the radiation field is suitable for adapting to different tasks in a simple manner. For this purpose, every diode laser is connected to a thermal contact surface of a separate, heat-spreading carrier which is fastened to a cooling surface of a common cooling element so as to be electrically insulated. The carriers are arranged adjacently in such a way that the line-shaped emission regions of the diode lasers are adjacent in series and the p-n junction planes extend parallel to the thermal contact surfaces. The diode laser arrangement is particularly suitable as a pump light source.
    Type: Grant
    Filed: November 21, 2001
    Date of Patent: May 24, 2005
    Assignee: Jenoptik Laserdiode GmbH
    Inventors: Petra Hennig, Guenter Hollemann
  • Patent number: 6754244
    Abstract: A diode laser component is disclosed for providing a passive cooling heatsink with improved heat spreading such that a diode laser component which uses a heatsink of this type is constructed so as to be thermally symmetrical and compact and can be used for multiple purposes, particularly as regards beam control and electrical circuitry. The heatsink, which carries a diode laser bar on a mounting surface, contains an area for heat spreading which is enclosed by material and surrounds all edges of the mounting surface. Recesses for fastening of elements are arranged in the heatsink outside of the area for heat spreading.
    Type: Grant
    Filed: March 20, 2002
    Date of Patent: June 22, 2004
    Assignee: Jenoptik Laserdiode GmbH
    Inventors: Ulrich Roellig, Dirk Lorenzen
  • Publication number: 20020136250
    Abstract: A diode laser component is disclosed for providing a passive cooling heatsink with improved heat spreading such that a diode laser component which uses a heatsink of this type is constructed so as to be thermally symmetrical and compact and can be used for multiple purposes, particularly as regards beam control and electrical circuitry. The heatsink, which carries a diode laser bar on a mounting surface, contains an area for heat spreading which is enclosed by material and surrounds all edges of the mounting surface. Recesses for fastening of elements are arranged in the heatsink outside of the area for heat spreading.
    Type: Application
    Filed: March 20, 2002
    Publication date: September 26, 2002
    Applicant: JENOPTIK Laserdiode GmbH
    Inventors: Ulrich Roellig, Dirk Lorenzen