III-V Laser Strip Recrystallization for Ring Waveguide Integration
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Solution Overview
Problem
The demand for advanced semiconductor ring lasers has increased with the advancement of integrated circuit technology, but existing solutions lack the capability to efficiently generate and control laser light output for various circuit structures and devices.
Innovation Solution
A semiconductor ring laser structure is developed, featuring a ring waveguide with a seed region and a laser strip that includes a p-n junction, where the laser strip is thermally treated to recrystallize and alter its semiconductor material composition, allowing for controlled electromagnetic radiation generation and amplification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a laser strip with p-n junction is integrated into a ring waveguide structure, then laser light generation and amplification capability is improved, but device complexity increases
Solution Approach 1:
The patent combines the laser strip with the p-n junction directly within the ring waveguide structure, merging multiple functional elements (laser generation, light amplification, and waveguide) into a single integrated device. This eliminates the need for separate laser components and reduces overall system complexity despite adding advanced functionality.
Solution Approach 2:
The ring waveguide structure serves multiple functions: it acts as the optical cavity for laser generation, the waveguide for light transmission, and the amplification medium through the integrated p-n junction. This multi-functionality reduces the need for additional components and simplifies the overall device architecture.
2Manufacturing precision
If thermal treatment is applied to recrystallize the semiconductor material of the laser strip, then manufacturing precision and material composition control are improved, but processing time and energy consumption increase
Solution Approach 1:
The patent employs thermal treatment to fundamentally change the physical state and crystalline structure of the semiconductor material in the laser strip. By controlling temperature parameters during processing, the method achieves precise control over material composition and crystal quality, which is essential for optimal laser performance.
3Adaptability or versatility
If the p-n junction is aligned with a portion of the ring waveguide, then laser light output control and wavelength adjustment are improved, but structural complexity increases
Solution Approach 1:
The patent creates a localized alignment between the p-n junction and a specific portion of the ring waveguide, concentrating the light-generating and amplifying functions in a precise region. This local optimization allows for controlled wavelength and power output without requiring complex adjustments throughout the entire device structure.
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 the production of semiconductor ring lasers with adjustable wavelength and power output, enhancing their integration into advanced circuit structures and devices, improving their performance and versatility.
Implementation Method 1
The laser strip includes a laser medium and a p-n junction capable of generating electromagnetic radiation
Implementation Method 2
The laser strip is thermally treated to cause recrystallization of the semiconductor material of the laser strip
Implementation Method 3
Laser light generally may be generated and transferred into a ring waveguide, where the light may reflect internally and build in intensity as it continues to reflect around the ring
Data Source
AI summary
Structures for integrated lasers, systems including integrated lasers, and associated fabrication methods. A ring waveguide and a seed region are arranged interior of the ring waveguide. A laser strip extends across a portion of the ring waveguide. The laser strip has an end contacting the seed region and another opposing end. The laser strip includes a laser medium and a p-n junction capable of generating electromagnetic radiation. The p-n junction of the laser strip is aligned with a portion of the ring waveguide.