Vertical Laser Device With Stacked Resonators
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Solution Overview
Problem
Current laser devices face limitations in increasing the degree of integration of light sources, which affects the efficiency and intensity of laser light generation, particularly in optical communication technologies using infrared wavelengths.
Innovation Solution
The proposed laser device incorporates a substrate with a pump light source and an upper waveguide that includes a light emitting layer, such as graphene or metal chalcogenides, with specific resonator structures and electrodes to enhance laser light generation and resonance, increasing the degree of integration of light sources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If conventional laser devices are used, then the structure is simple, but the degree of integration of light sources is low
Solution Approach 1:
The patent implements a nested structure where the lower waveguide and upper waveguide are vertically stacked with the light emitting layer positioned between them. The lower resonator is formed within the lower waveguide structure, and the upper resonator is formed within the upper waveguide structure, creating a compact integrated configuration that increases the degree of integration while maintaining structural organization.
Solution Approach 2:
The patent transitions from a planar configuration to a three-dimensional vertical stacking arrangement. The lower waveguide and upper waveguide are disposed at different vertical levels with the light emitting layer in between, utilizing the vertical dimension to integrate multiple functional components (lower resonator, light emitting layer, upper resonator) into a compact structure, thereby increasing the degree of integration.
2Power
If the degree of integration of light sources is increased, then the intensity and energy of laser light are enhanced, but the device complexity increases
Solution Approach 1:
The patent combines multiple functional components into a single integrated device structure. The lower waveguide with lower resonator, the light emitting layer, and the upper waveguide with upper resonator are merged into one compact configuration. This merging approach enables enhanced laser light intensity and energy through improved optical confinement and resonance while avoiding the complexity of separate discrete components.
Solution Approach 2:
The nested arrangement of the lower resonator within the lower waveguide and the upper resonator within the upper waveguide allows for compact integration of multiple resonant structures. This nesting enables enhanced optical field confinement and energy density, thereby increasing laser light intensity without requiring a proportionally larger device footprint.
3Productivity
If pump light is used to generate laser light through resonators, then the efficiency of laser light generation is improved, but the device complexity increases
Solution Approach 1:
The patent integrates the pump light source, lower resonator, light emitting layer, and upper resonator into a single unified device structure. This merging eliminates the need for separate external resonator systems and aligns the optical paths, thereby improving the efficiency of laser light generation while consolidating the device into a more compact and manageable configuration.
Solution Approach 2:
By utilizing vertical stacking in the third dimension, the patent integrates multiple functional layers (lower waveguide with resonator, light emitting layer, upper waveguide with resonator) into a compact structure. This vertical integration improves optical confinement and resonance efficiency, enhancing laser light generation efficiency while maintaining a compact device footprint.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration increases the intensity and energy of laser light, allowing for more efficient generation and transmission of infrared laser light, improving optical communication technologies by enhancing the integration of light sources.
Implementation Method 1
upper electrodes which are disposed on both side walls of the light emitting layer outside the upper waveguide
Implementation Method 2
an upper resonator configured to allow laser light to be generated and resonate by using the pump light
Implementation Method 3
upper waveguide which is disposed above the light emitting layer
Data Source
AI summary
Disclosed is a laser device. The laser device includes a substrate, a pump light source which is disposed on the substrate and provided with a light emitting layer configured to generate pump light, and an upper waveguide which is disposed above the pump light source in a first direction and provided with an upper resonator configured to allow laser light to be generated and resonate by using the pump light.