Multi-Wavelength Laser Using Meta-Mirror Segmentation
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Solution Overview
Problem
Current laser technologies are limited in their ability to generate light with multiple resonance modes of different wavelengths, which hinders precise distance measurement, object identification, and material distribution analysis using light.
Innovation Solution
A multi-wavelength laser apparatus is developed, featuring a meta-mirror layer with patterned protrusions and grooves filled with transparent material, combined with a laser emitter and an upper-mirror layer, allowing for two separate resonance modes with perpendicular polarization and distinct wavelengths, enabled by materials like Ag, Au, and a conductive graphene layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional laser system uses a single cavity length, then it can generate a single mode laser light, but it cannot generate multiple resonance modes with different wavelengths
Solution Approach 1:
The patent segments the laser cavity into two distinct cavities with different lengths, allowing each cavity to support different resonance modes and wavelengths independently. This segmentation enables multi-wavelength generation without requiring a single complex cavity design
Solution Approach 2:
The patent introduces a vertical stacking dimension by placing two laser emitters at different positions along the vertical axis, each coupled with mirrors to form separate cavities. This dimensional arrangement allows simultaneous operation of multiple resonance modes with different wavelengths
2Adaptability or versatility
If a laser system uses multiple cavities to generate multiple wavelengths, then wavelength diversity is achieved, but the device structure becomes more complex
Solution Approach 1:
The patent merges multiple laser emitters and mirror systems into a single integrated apparatus where two laser emitters are vertically stacked and coupled with corresponding mirrors to form two distinct but integrated cavities. This combining approach achieves multi-wavelength capability while maintaining a compact unified structure
Solution Approach 2:
The patent designs a universal laser apparatus structure that can simultaneously support multiple resonance modes and wavelengths through a unified configuration of vertically stacked emitters and mirrors, allowing the single device to perform multiple wavelength generation functions
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 design enables high-accuracy separation of light beams by wavelength, facilitating simultaneous measurement of optical characteristics of multiple objects or materials with improved precision and reduced measurement time.
Implementation Method 1
two separate resonance modes with different wavelengths from each other and vertical polarization
Implementation Method 2
a meta-mirror layer having a surface in which a plurality of patterns are formed
Implementation Method 3
a laser emitter disposed on the meta-mirror layer
Data Source
AI summary
A multi-wavelength laser apparatus is provided. The multi-wavelength laser apparatus may include a meta-mirror layer having a surface in which a plurality of patterns are formed, a laser emitter disposed on the meta-mirror layer, and an upper-mirror layer disposed on the laser emitter. The multi-wavelength laser apparatus may further include a conductive graphene layer between the meta-mirror layer and the laser emitter.