A method of manufacturing a light emitting device includes: disposing a first glass that does not contain a fluorescent material on a light-reflecting member; disposing a fluorescent material containing member on the light-reflecting member via the first glass; fusing the first glass to the fluorescent material containing member at a first temperature to fix the fluorescent material containing member to the light-reflecting member; placing a second glass containing a second fluorescent material on a light emitting surface side of the fluorescent material containing member; fusing the second glass to at least one of the light-reflecting member and the first glass at a second temperature that is lower than the first temperature; and disposing a light emitting element such that light emitted from the light emitting element is irradiated on a light incident surface of the fluorescent material containing member.

A semiconductor laser device includes an optical waveguide that extends toward a first end of the semiconductor laser device. The optical waveguide includes a first clad layer, an active layer, a second clad layer, and an electrode layer in this order. A reflecting surface, which has a dielectric film and a metal film in this order from the active layer, crosses the active layer at a second end of the optical waveguide.

An edge emitting structure includes an active region configured to generate radiation in response to excitation by a pumping beam incident on the structure. A front facet of the edge emitting structure is configured to emit the radiation generated by the active region. A metallic reflective coating disposed on at least one of the front and rear facets of the edge emitting structure. The metallic reflective coating is configured to reflect the radiation generated by the active region.

The present invention relates to a laser bar with reduced lateral far-field divergence and, more particularly, to a laser bar with a uniform temperature profile in the lateral direction to reduce lateral far-field divergence.

A laser bar (1) according to the invention comprises a plurality of emitter structures arranged in parallel next to one another in the lateral direction, wherein, for the variation of the temperature profile in lateral direction, an adjustment of the dissipated thermal power of the outer emitter structures is made with respect to the inner emitter structures enclosed by the outer emitter structures.

The present embodiment relates to a light-emitting device comprising a reflective metasurface modulating a phase for each of pixels constituting a one- or two-dimensional array. The light-emitting device comprises a surface emitting laser element, a light guide layer, and the metasurface. The metasurface has a light transmissive layer including a dielectric layer, one metal film on one surface thereof, and the other metal film on the other surface thereof. In each of unit regions corresponding to the pixels, the light transmissive layer includes a portion exposed without being covered with the metal film. The width of each unit region and the thickness of the light transmissive layer are smaller than the wavelength of the laser light to the metasurface. The metasurface modulates the phase of the laser light for each unit region. A first light output surface outputs the modulated laser.

An edge emitting structure includes an active region configured to generate radiation in response to excitation by a pumping beam incident on the structure. A front facet of the edge emitting structure is configured to emit the radiation generated by the active region. A metallic reflective coating disposed on at least one of the front and rear facets of the edge emitting structure. The metallic reflective coating is configured to reflect the radiation generated by the active region.

A light emitting apparatus includes: a submount including a mounting face and an end face, and the end face having an upper edge apart from a front edge of the mounting face; and a quantum cascade laser disposed on the front edge and the mounting face. The quantum cascade laser includes: a laser structure having first, and second faces; a first electrode on the first face; a second electrode on the second face; and a reflecting structure on a first end face of the laser structure. The reflecting structure includes an insulating film having a first end on the first face and a second end on the second face, and a metal film having a first end on the first face, and a second end on the second face. The insulating film is disposed between the laser structure and the first end and the second end of the metal film.

A light-emitting device is provided. The light-emitting device comprises: a substrate; and multiple radiation emitting regions arranged on the substrate, and comprising: a first radiation emitting region capable of emitting coherent light and emits a coherent light when driven by a first current; a second radiation emitting region capable of emitting coherent light and emits an incoherent light when driven by the first current, wherein each of the first radiation emitting region and the second emitting region comprises epitaxial structure comprising a first DBR stack, a light-emitting structure, and a second DBR stack.

A light-emitting device is provided. The light-emitting device comprises: an epitaxial structure comprising a first DBR stack, a light-emitting stack and a second DBR stack and a contact layer in sequence; an electrode on the epitaxial structure; a current blocking layer between the contact layer and the electrode; a first opening formed in the current blocking layer; and a second opening formed in the electrode and within the first opening; wherein a part of the electrode fills in the first opening and contacts the contact layer.

A method of manufacturing a light emitting device includes: disposing a first glass that does not contain a fluorescent material on a light-reflecting member; disposing a fluorescent material containing member on the light-reflecting member via the first glass; fusing the first glass to the fluorescent material containing member at a first temperature to fix the fluorescent material containing member to the light-reflecting member; placing a second glass containing a second fluorescent material on a light emitting surface side of the fluorescent material containing member; fusing the second glass to at least one of the light-reflecting member and the first glass at a second temperature that is lower than the first temperature; and disposing a light emitting element such that light emitted from the light emitting element is irradiated on a light incident surface of the fluorescent material containing member.