Diode laser array
OwnerRoland E. Juhalainventor
Life of this patent
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Abstract
The LAMPS module is a compact, back cooled, vertically stacked, two-dimensional, incoherent array of diode laser bars featuring all-soldered construction with partial collimation of the emitting diode laser light to form a laser power source that can be transformed into a laser line source of exceptional brightness. The array includes a diode laser unit which comprises a diode laser bar, an electrode, and a substrate soldered to a heat sink. The diode laser unit is joined by soldering to an electrical isolator plate, and the isolator plate is joined to a heat exchanger by soldering for removal of waste heat. The invention includes a method for forming the array and a heat exchanger for removing heat from the array.
Claims34
An array of diode bars providing a beam of laser radiation comprising:
- a stack of diode units, with each diode unit comprising:
- a diode laser bar having a diode upper surface and a diode lower surface;
- a lid having a front portion and a back portion and a lid upper surface and a lid lower surface;
- said lid lower surface at least partially engaging said diode upper surface;
- a heat sink located below said diode bar and said lid;
- said diode bar lower surface transferring heat to said heat sink;
- said bar upper surface transferring some heat to said lid lower surface;
- an electrically insulating spacer having a spacer upper surface and a spacer lower surface located below said lid and above said heat sink;
- said lid lower surface transferring heat to said spacer upper surface;
- electrical contact means including an electrode attached to said lid upper surface;
- said spacer lower surface transferring only heat from said lid to said heat sink;
- said heat sink having means thereupon for transferring heat to a heat exchanger;
- and a soldered joint joining said heat sink to said heat exchanger for removal of waste heat.
An array of diode bars providing a beam of laser radiation comprising:
- a stack of diode units, with each diode unit comprising:
- a diode laser bar having a diode upper surface and a diode lower surface;
- a lid having a front portion and a back portion and a lid upper surface and a lid lower surface;
- said lid lower surface at least partially engaging said diode upper surface;
- a heat sink located below said diode bar and said lid;
- said diode bar lower surface transferring heat to said heat sink;
- said bar upper surface transferring some heat to said lid lower surface;
- an electrically insulating spacer having a spacer upper surface and a spacer lower surface located below said lid and above said heat sink;
- said lid lower surface transferring heat to said spacer upper surface;
- electrical contact means including an electrode attached to said lid upper surface;
- said spacer lower surface transferring only heat from said lid to said heat sink;
- said heat sink having means thereupon for transferring heat to a heat exchanger.
Dependencies are inferred from the claim text.