Laser package having multiple emitters configured on a support member

Patent metadata

Field	Value
Publication number	US-10247366-B2
Application number	US-201715803301-A
Country	US
Kind code	B2
Filing date	Nov 3, 2017
Priority date	Jan 24, 2011
Publication date	Apr 2, 2019
Grant date	Apr 2, 2019

Abstract

A method and device for emitting electromagnetic radiation at high power using nonpolar or semipolar gallium containing substrates such as GaN, AlN, InN, InGaN, AlGaN, and AlInGaN, is provided. In various embodiments, the laser device includes plural laser emitters emitting green or blue laser light, integrated a substrate.

First claim

What is claimed is:

1. A lighting system comprising:
an apparatus comprising a white lighting device, a multi-colored lighting device, a flat panel device, a beam projector device, or a display device;
1 to N laser diode devices configured to provide light for the apparatus, wherein N ranges from 2 to 50, at least one of the 1 to N laser diode devices comprises gallium and nitrogen, and each of the 1 to N laser diode devices is configured to emit a laser beam characterized by a wavelength ranging from 390 nm to 485 nm;
a free space with a non-guided characteristic capable of transmitting the laser beam from each of the 1 to N laser diode devices;
an optical device configured to receive the laser beam from each of the 1 to N laser diode devices and to provide an output beam characterized by a selected wavelength range, a selected spectral width, a selected power, and a selected spatial configuration;
an output power characterizing the output beam, the output power being at least 0.5 W;
a phosphor material optically coupled to the output beam;
a support member configured to transport thermal energy from the 1 to N laser diode devices to a heat sink;
a free space optics included in the optical device and configured to create one or more free space optical beams;
a thermal path from the 1 to N laser diode devices to the heat sink characterized by a thermal impedance; and
whereupon the output beam is characterized by an optical output power degradation of less than 20% in 500 hours when the 1 to N laser diode devices are operated at the output power and with a substantially constant input current at a base temperature of about 25 degrees Celsius.

2. The system of claim 1 , wherein the phosphor material is configured to operate in a mode selected from a reflective mode, a transmissive mode, and a combination of a reflective mode and a transmissive mode, and the phosphor material is coupled to an optical element or to a metal.

3. The system of claim 1 , wherein the phosphor material is thermally coupled to the support member along a continuous thermal gradient toward a selected portion of a heat sink region within a vicinity of the support member.

4. The system of claim 1 , wherein the 1 to N laser diode devices comprise a plurality of laser diode devices; and wherein the system further comprising an optical coupler configured to optically couple a plurality of laser beams into the output beam.

5. The system of claim 1 , wherein the 1 to N laser diode devices overlie a surface region selected from a non-polar gallium and nitrogen containing oriented surface region and a semipolar gallium and nitrogen containing oriented surface region.

6. A lighting system comprising:
an apparatus comprising a white lighting device, a multi-colored lighting device, a flat panel device, a beam projector device, or a display device;
a support member;
1 to N laser diode devices configured to provide light for the apparatus, wherein each of the 1 to N laser diode devices are coupled to the support member, N ranges from 2 to 50, at least one of the 1 to N laser diode devices comprises gallium and nitrogen, and each of the 1 to N laser diode devices is configured to emit a laser beam characterized by a wavelength ranging from 390 nm to 485 nm;
an optical fiber configured to receive the laser beam from each of the 1 to N laser diode devices by optical coupling and to provide an output beam characterized by a selected wavelength range, a selected spectral width, a selected power, and a selected spatial configuration, the output beam being characterized by an optical output power of at least 0.5 W; and
a phosphor material optically coupled to the output beam from the optical fiber, wherein the support member is configured to transport thermal energy from the 1 to N laser diode devices to a heat sink;
a thermal path from the 1 to N laser diode devices to the heat sink characterized by a thermal impedance; and
whereupon the output beam is characterized by an optical output power degradation of less than 20% in 500 hours when the 1 to N laser diode devices are operated at the output power and with a substantially constant input current at a base temperature of about 25 degrees Celsius.

7. The system of claim 6 , wherein the phosphor material is configured to operate in a mode selected from a reflective mode, a transmissive mode, and a combination of a reflective mode and a transmissive mode, and the phosphor material is coupled to an optical element or to a metal.

8. The system of claim 6 , wherein the optical coupling of the laser beam from each of the 1 to N laser diode devices to the fiber is provided with a lensed fiber.

9. The system of claim 6 , wherein the optical coupling of the laser beam from each of the 1 to N laser diode devices to the fiber is provided with free-space optics.

10. The system of claim 6 , wherein the 1 to N laser diode devices comprise a plurality of laser diode devices; and wherein the system further comprising an optical coupler configured to optically combine a plurality of laser beams and the combined plurality of laser beams are optically coupled to the fiber.

11. A lighting system comprising:
an apparatus comprising a white lighting device, a multi-colored lighting device, a flat panel device, a beam projector device, or a display device;
1 to N laser diode devices configured to provide light for the apparatus, wherein N ranges from 2 to 50, at least one of the 1 to N laser diode devices comprises gallium and nitrogen, and each of the 1 to N laser diode devices is configured to emit a laser beam characterized by a wavelength ranging from 390 nm to 485 nm;
a free space with a non-guided characteristic capable of transmitting the laser beam from each of the 1 to N laser diode devices to an optical fiber or light guide located remotely at 10 to 100 mm relative to the 1 to N laser diode devices;
an optical device configured to receive the laser beam from each of the 1 to N laser diode devices and to provide an output beam characterized by a selected wavelength range, a selected spectral width, a selected power, and a selected spatial configuration;
an output power characterizing the output beam, the output power being at least 0.5 W;
a phosphor material optically coupled to the output beam; wherein the phosphor material is configured to operate in a mode selected from a reflective mode, a transmissive mode, or a combination of a reflective mode and a transmissive mode;
a support member configured to transport thermal energy from the 1 to N laser diode devices to a heat sink; and
a thermal path from the 1 to N laser diode devices to the heat sink characterized by a thermal impedance.

12. The system of claim 11 , wherein the phosphor material is thermally coupled to the support member along a continuous thermal gradient toward a selected portion of a heat sink region within a vicinity of the support member.

13. The system of claim 11 , wherein the 1 to N laser diode devices comprise a plurality of laser diode devices; and wherein the system further comprising an optical coupler configured to optically couple a plurality of laser beams into the output beam.

14. The system of claim 11 , wherein the 1 to N laser diode devices overlie a surface region selected from a non-polar gallium and nitrogen containing oriented surface region and a semipolar gallium and nitrogen containing oriented surface region.

15. The system of claim 11 , further comprising a micro-channel cooler thermally coupled to the support member or further comprising a heat spreader coupled between the support member and the 1 to N laser di

Assignees

• Soraa Laser Diode Inc

Inventors

• Goutain Eric
• Raring James W
• Rudy Paul
• Huang Hua

Classifications

• H10W72/5524

  comprising aluminium [Al] · CPC title

• H01S5/0425

  Electrodes, e.g. characterised by the structure · CPC title

• H01S5/04256

  characterised by the configuration · CPC title

• F21V9/32

  characterised by the arrangement of the photoluminescent material · CPC title

• F21K9/62

  using mixing chambers, e.g. housings with reflective walls · CPC title