Electro-Optic Tuning Structure for Dynamic Radiation Control
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Solution Overview
Problem
Current optoelectronic devices face challenges in achieving efficient manipulation of electromagnetic radiation due to limitations in speed, operational flexibility, and design complexity, particularly in combining optical and tuneability functionalities within a single element.
Innovation Solution
The optoelectronic device decouples optical and tuneability functionalities by using a transparent substrate with a dedicated tuning structure made of solid-state inorganic materials, such as ferroelectric materials, and a separate optical structure, allowing for independent control of electromagnetic radiation through electric fields, thereby reducing design complexity and increasing integration and speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If optical and tuning functionalities are combined in a single meta-surface element, then integration is improved, but device complexity and material constraints increase
Solution Approach 1:
The device is divided into separate functional modules: a static optical element (substrate with optical structure) and a dynamic tuning element (electro-optical layer with electrode). This segmentation allows each component to be optimized independently, reducing overall system complexity while maintaining high integration through their coordinated operation.
2Ease of manufacture
If liquid crystals are used for media modulation, then process complexity is reduced, but response speed decreases to Hz range
Solution Approach 1:
The patent transitions from liquid crystal media (Hz response) to solid-state electro-optical materials (kHz-MHz response) while maintaining the electrical gating approach. This parameter change in material state enables faster response speeds without significantly increasing fabrication complexity, as the solid-state materials can be integrated using standard thin-film deposition techniques.
3Adaptability or versatility
If MEMS devices are used for mechanical adjustment, then operational flexibility is improved, but fabrication complexity and speed decrease to kHz range
Solution Approach 1:
The patent replaces mechanical adjustment mechanisms (MEMS) with an electrical gating system. Instead of physically moving or deforming optical elements, the invention uses electric fields to modulate the optical properties of the electro-optical material, achieving similar operational flexibility without mechanical complexity and at higher speeds.
4Speed
If electro-optical materials are used for electrical gating, then speed and reliability are improved, but material constraints and optical complexity increase
Solution Approach 1:
The patent employs a transparent substrate that serves multiple functions: as the structural base for the optical element, as the optical medium itself, and as the integration platform for the electro-optical layer. This multi-functionality reduces the need for additional specialized materials and layers, thereby decreasing material constraints and optical complexity while maintaining fast response speeds through electrical gating.
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 approach enables efficient and flexible manipulation of electromagnetic radiation, reducing implementation costs and time, while allowing for dynamic control of optical properties and target specifications, suitable for various applications including beam shaping and camera systems.
Implementation Method 1
an electrical field is applied to alter locally the optical properties of a material (e.g. the refractive index)
Implementation Method 2
The optical property is changed by means of the Pockels effect. By means of the Pockels effect the refractive index of the material used for the tuning structure changes in linear proportion with an applied electric field
Data Source
AI summary
The present disclosure relates to an optoelectronic device for manipulating electromagnetic radiation. Drawbacks of conventional systems like material constraints, system complexity and tuning speed are overcome by the optoelectronic device comprising a substrate with at least one tuning structure arranged on the substrate, wherein the tuning structure comprises an electro-optical material. The tuning structure comprises a first and a second electrical contact. A cover layer covers the at least one tuning structure. An optical structure is arranged on the cover layer. A voltage source is electrically connected to the first and the second electrical contact and provided for generating electric fields within the at least one tuning structure.