Polarized Light Emitter With Grating Polarizer for Multi-State Emission
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Solution Overview
Problem
Existing technologies lack efficient solutions for emitting light with various polarization components, which is crucial for researching chiral symmetry in molecular structures and analyzing industrial equipment and automotive parts.
Innovation Solution
A polarized light emitting device is designed with a first and second reflective layer, a gain medium layer, electrodes, and a linear polarizer layer with alternating grating elements made of dielectric materials of different refractive indices, along with a polarization conversion layer to convert the polarization state of incident light.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional light emitting structures are used, then device simplicity is maintained, but the ability to emit light with various polarization components is insufficient
Solution Approach 1:
The light emitting device is segmented into distinct functional layers: a gain medium layer for light generation, a first reflective layer, and a second reflective layer with orthogonal polarization selectivity. This segmentation allows each layer to independently control specific polarization components, enabling versatile polarization emission while maintaining a relatively simple overall structure.
Solution Approach 2:
The reflective layers are designed to serve multiple functions: they act as mirrors for optical feedback, polarization selectors for controlling emission polarization states, and wavelength filters for determining emission characteristics. This multi-functionality reduces the need for additional separate components, thereby managing device complexity while achieving versatile polarization emission capability.
2Adaptability or versatility
If polarization conversion layers are added to achieve circularly polarized light, then polarization versatility is improved, but device complexity increases
Solution Approach 1:
The gain medium layer is configured to naturally generate light with specific polarization characteristics based on its material properties and excitation conditions. The reflective layers automatically provide the necessary polarization selection and feedback without requiring additional active control mechanisms. This self-service approach achieves polarization state control while minimizing the need for extra polarization conversion layers and associated complexity.
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
The device effectively emits light with various polarization components, including linearly and circularly polarized light, enabling advanced research and analysis applications.
Implementation Method 1
a gain medium layer between the first reflective layer and the second reflective layer, the gain medium layer being configured to generate light
Implementation Method 2
a first reflective layer and a second reflective layer disposed to face each other in a first direction
Implementation Method 3
a linear polarizer layer between the first reflective layer and the first electrode, wherein the linear polarizer layer includes a plurality of first grating elements alternately arranged with a plurality of second grating elements
Implementation Method 4
a polarization conversion layer disposed on a light emitting surface of the second reflective layer, the polarization conversion layer being configured to convert a polarization state of incident light by delaying a phase of the incident light
Data Source
AI summary
A polarized light emitting device and a polarization analysis apparatus including the same are disclosed. The polarized light emitting device includes a first reflective layer and a second reflective layer disposed to face each other in a first direction, a gain medium layer between the first reflective layer and the second reflective layer, and a linear polarizer layer, wherein the linear polarizer layer includes a plurality of first grating elements alternately arranged with a plurality of second grating elements along a second direction perpendicular to the first direction, wherein each of the first grating elements includes a first dielectric material having a first refractive index, and wherein each of the second grating elements includes a second dielectric material having a second refractive index different from the first refractive index.