摘要:
Substrates having increased thermal conductivity are provided, comprising a body having opposed surfaces and a cavity that opens on at least one surface, the cavity containing at least one material having a greater thermal conductivity than the body. Devices are provided comprising a substrate and a semiconductor over a surface of the substrate. Methods of forming devices according to the invention are also provided.
摘要:
Substrates having increased thermal conductivity are provided, comprising a body having opposed surfaces and a cavity that opens on at least one surface, the cavity containing at least one material having a greater thermal conductivity than the body. Devices are provided comprising a substrate and a semiconductor over a surface of the substrate. Methods of forming devices according to the invention are also provided.
摘要:
An index-guided buried heterostructure AlGalnN laser diode provides improved mode stability and low threshold current when compared to conventional ridge waveguide structures. A short period superlattice is used to allow adequate cladding layer thickness for confinement without cracking. The intensity of the light lost due to leakage is reduced by about 2 orders of magnitude with an accompanying improvement in the far-field radiation pattern when compared to conventional structures.
摘要:
A distributed feedback structure includes a substrate material. An active layer has an alloy including at least one of aluminum, gallium, indium, and nitrogen. A first cladding, having an alloy including at least one of the aluminum, the gallium, the indium, and the nitrogen, is on a first side of the active layer. A second cladding, having an alloy including at least one of the aluminum, the gallium, the indium, and the nitrogen, is on a second side of the active layer. Periodic variations of refractive indices in at least one of the first and second claddings provide a distributed optical feedback.
摘要:
A structure and method for an asymmetric waveguide nitride laser diode without need of a p-type waveguide is disclosed. The need for a high aluminum tunnel barrier layer in the laser is avoided.
摘要:
A method for placing nitride laser diode arrays on a thermally conducting substrate is described. The method uses an excimer laser to detach the nitride laser diode from the sapphire growth substrate after an intermediate substrate has been attached to the side opposite the sapphire substrate. A thermally conducting substrate is subsequently bonded to the side where the sapphire substrate was removed.
摘要:
A structure for nitride laser diode arrays attached to a thermally conducting substrate is described where the sapphire growth substrate has been removed. The thermally conducting substrate is attached to the side opposite of the sapphire growth substrate.
摘要:
An inner stripe laser diode structure for GaN laser diodes is disclosed. Inner stripe laser diode structures provide a convenient means of achieving low threshold, single mode laser diodes. The structure of an inner stripe laser diode is modified to produce lateral index guiding.
摘要:
A self aligned, index-guided, buried heterostructure AlGalnN laser diode provides improved mode stability and low threshold current when compared to conventional ridge waveguide structures. A short period superlattice is used to allow adequate cladding layer thickness for confinement without cracking. The intensity of the light lost due to leakage is reduced by about 2 orders of magnitude with an accompanying improvement in the far-field radiation pattern when compared to conventional structures. The comparatively large p-contact area allowed by the self-aligned architecture contributes to a lower diode voltage and less heat during continuous wave operation of the laser diode.
摘要:
A structure and method for an asymmetric waveguide nitride laser diode without need of a p-type waveguide is disclosed. The need for a high aluminum tunnel barrier layer in the laser is avoided.