| 摘要 |
The embodiments described herein provide a device and method for an integrated white colored electromagnetic radiation source using a combination of laser diode excitation sources based on gallium and nitrogen containing materials and light emitting source based on phosphor materials. A violet, blue, or other wavelength laser diode source based on gallium and nitrogen materials may be closely integrated with phosphor materials, such as yellow phosphors, to form a compact, high-brightness, and highly-efficient, white light source. |
| 主权项 |
1. A packaged integrated white light source using a beam of light, comprising:
a package member configured with a base member; a laser diode device comprising a gallium and nitrogen containing material and configured as an excitation source, the laser diode device comprising a p-electrode and an n-electrode; a phosphor wavelength converter member configured as an emitter and coupled to the laser diode device; at least one common support member configured to support the laser diode device and the phosphor member, a heat sink thermally coupled to the common support member, the common support member configured to transport thermal energy from the laser diode device and phosphor member on the common support member to the heat sink; a first electrical connection configured from the p-electrode of the laser diode device to a first internal feedthrough on the package member; and a second electrical connection configured from the n-electrode of the laser diode device to a second internal feedthrough on the package member; a submount member configured with the laser diode device to form a chip on submount structure; an output facet configured on the laser diode device to output a beam of electromagnetic radiation from the output facet; the beam of electromagnetic radiation being selected from a violet and/or a blue emission with a first wavelength ranging from 400 nm to 485 nm, the output beam being characterized by a wavelength range, a spectral width, a power, and a spatial configuration: a free space, between the output facet and the phosphor member with a non-guided characteristic capable of transmitting the laser beam from the laser diode device to the phosphor member; wherein the laser beam forms an excitation spot on a spatial region of the phosphor member; a geometrical shape and a diameter dimension characterizing the excitation spot on the phosphor member; an angle of incidence configured between the laser beam and the phosphor member, the phosphor member being configured to convert at least a fraction of the electromagnetic radiation in the laser beam with a first wavelength to a second wavelength that is longer than the first wavelength; a reflective mode characterizing the phosphor member such that the laser beam is incident on an excitation surface of the phosphor member; a white light emitted from at least one emission surface of the phosphor member, the white light emission being comprised of a mixture of wavelengths characterized by at least the second wavelength from the phosphor member; a first and second lead provided on the package, the first internal feedthrough and the second internal feedthrough being configured with an electrical coupling to the first and second external leads, respectively; a cap member configured on the package member such that the cap member forms a seal around a white light source; and an electrical coupling configured with the first and second external leads to connect to a power source to supply power to the laser diode to emit the beam of electromagnetic radiation incident on the phosphor member; a form factor characterizing the integrated white light source, the form factor having a length, a width, and a height dimension. |
