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Multiple active layers planar laser with vertical cavity

A vertical cavity surface and active layer technology, applied in the field of lasers, can solve the problems of reduced density, inability to obtain multiple wavelengths, high internal resistance, etc., to reduce difficulties and improve electro-optical conversion efficiency.

Inactive Publication Date: 2010-09-01
李奕权
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, ordinary VCSEL requires a multi-layer distributed Bragg reflector (DBR), which uses different materials from the active layer, and the production process is quite complicated.
The electro-optical conversion efficiency, also limited by the high internal resistance caused by the reflector
[0003] On the other hand, the lasing wavelength of conventional VCS laser emitters is a single wavelength, and multiple wavelengths cannot be obtained in the same device. Therefore, in some applications, people have to use multiple VCS lasers with different wavelengths. Lasers are emitted to obtain multiple wavelengths, which not only increases the cost, but also cannot be well integrated and reduces the density

Method used

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  • Multiple active layers planar laser with vertical cavity
  • Multiple active layers planar laser with vertical cavity
  • Multiple active layers planar laser with vertical cavity

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Embodiment Construction

[0023] Such as figure 1 As shown, it is a schematic diagram of a signal bus that runs through the layers of a full stack of chips. Multiple active layer vertical cavity surface resonators 110, that is, laser emitting and receiving elements, are built in the same layer of chips 100, and the multilayers are connected by signal lines 120 Chips are stacked, and resonant cavities at the same position are connected in a line to form an optical channel that runs through the entire stack of chips. The optical channel can transmit various information between chips. Wherein, the wavelength of the communication light is selected to make the substrate material transparent to it. Holes can also be drilled in the corresponding channels of the chip, or a waveguide 102 can be built in the substrate with a femtosecond laser.

[0024] Such as figure 2 As shown, it is a schematic diagram of a multi-active layer vertical cavity surface resonator. The resonator is on the substrate, and a transp...

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Abstract

Optical resonance unit of the light-emitting device includes high-doped conduction region, insulating layer, negative pole, limiting layer, active layer, and positive pole. Repeated superposing optical resonance unit with vertical thickness being as half wavelength constitutes light resonant cavity. Characters of the laser are that: being placed between reflectors, light-emitting device of vertical cavity face with multiple active layers is as component of receiving and transmitting laser. Using capability of photon crystal for transmitting coherent light, the invention raises electro-optic conversion efficiency, reduces difficulty for fabricating Bragg reflector in low efficiency.

Description

technical field [0001] The invention relates to a laser, in particular to a multi-active-layer vertical cavity surface laser. Background technique [0002] Vertical Cavity Surface Laser Emitter (VCSEL) is an important electro-optic conversion device for generating laser after the edge-emitting laser. Since the laser is emitted to the vertical cavity surface at a small angle, it is easy to integrate and display, and is very suitable for use as a high-density laser. The communication bus between the transmitter device and the chip. However, ordinary VCSELs require a multilayer distributed Bragg reflector (DBR), which uses different materials from the active layer, and the production process is quite complicated. The electro-optical conversion efficiency is also limited by the high internal resistance caused by the reflector. [0003] On the other hand, the lasing wavelength of conventional VCS laser emitters is a single wavelength, and multiple wavelengths cannot be obtained...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S5/30H01S5/183
Inventor 李奕权
Owner 李奕权