Global Patent Index - EP 1889342 A2

EP 1889342 A2 20080220 - STACK OF LASER DIODES FORMING A LASER DEVICE

Title (en)

STACK OF LASER DIODES FORMING A LASER DEVICE

Title (de)

EINE LASERVORRICHTUNG BILDENDER LASERDIODENSTAPEL

Title (fr)

DISPOSITIF LASER FORME PAR UN EMPILEMENT DE DIODES LASER

Publication

EP 1889342 A2 20080220 (FR)

Application

EP 06742866 A 20060510

Priority

  • EP 2006004390 W 20060510
  • EP 05010406 A 20050513
  • EP 06742866 A 20060510

Abstract (en)

[origin: WO2006122691A2] The laser device (22) is formed by a stack of laser diodes (4) placed on wafers (6) made of an electrically conductive material and having a good heat conductivity. In order to obtain a good efficiency in the evacuation of heat toward the cooling body (10) and to avoid the problems associated with an electrical short circuit, each wafer has, on its lower end (24), an electrically non-conductive layer placed on its surface before fastening to the cooling body by a fastening material (26) that preferably conducts heat well, formed, in particular, by a solder layer. According to the invention, the non-conductive layer has a width that is sufficient for enabling the fastening material to partially cover the lateral sides of the non-conductive layers, and the fastening material extends between the wafers, i.e. so that it forms a continuous layer on the cooling body.

IPC 8 full level

H01S 5/40 (2006.01); H01S 5/022 (2006.01); H01S 5/024 (2006.01)

CPC (source: EP)

H01S 5/4025 (2013.01); H01S 5/02264 (2013.01); H01S 5/02272 (2013.01); H01S 5/02423 (2013.01); H01S 5/4018 (2013.01); H01S 5/4031 (2013.01)

Citation (search report)

See references of WO 2006122692A2

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

DOCDB simple family (publication)

WO 2006122691 A2 20061123; WO 2006122691 A3 20070419; EP 1889341 A2 20080220; EP 1889342 A2 20080220; US 2008310469 A1 20081218; US 7848371 B2 20101207; WO 2006122692 A2 20061123; WO 2006122692 A3 20070419

DOCDB simple family (application)

EP 2006004389 W 20060510; EP 06742865 A 20060510; EP 06742866 A 20060510; EP 2006004390 W 20060510; US 91434106 A 20060510