Light-emitting Device Beam Shaping Module Slow-axis Splitting
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
High-power semiconductor lasers with single emitters experience poor beam quality in the slow-axis direction, leading to inefficient coupling with optical fibers having small cores and low numerical apertures.
Innovation Solution
A light-emitting device with a single emitter and a beam shaping module that splits and reshapes the emission light in the slow-axis direction, arraying it in the fast-axis direction to improve beam quality and coupling efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a single emitter high-power semiconductor laser is used, then the power output is high, but the beam quality in the slow-axis direction is poor
Solution Approach 1:
The emission light from the single emitter is divided into multiple split lights in the slow-axis direction. This segmentation transforms the poor beam quality of a single high-power emitter into multiple beams with improved beam quality, allowing efficient coupling into optical fibers while maintaining high power output.
Solution Approach 2:
The patent rearranges the split lights from being distributed in the slow-axis direction to being arrayed in the fast-axis direction. This dimensional transformation creates a shaped beam profile that is optimized for coupling into optical fibers, converting the problematic slow-axis beam distribution into a favorable fast-axis array configuration.
2Productivity
If the emission light is coupled to optical fiber with small core and low NA, then the fiber coupling efficiency should be high, but the poor slow-axis beam quality prevents efficient coupling
Solution Approach 1:
By dividing the emission light into multiple split lights, the patent creates several smaller beams with better beam quality that can be individually and efficiently coupled into the optical fiber core, overcoming the limitation of poor beam quality from the single high-power emitter.
Solution Approach 2:
The rearrangement of split lights into a fast-axis array creates a shaped beam with a profile matched to the optical fiber acceptance characteristics, enabling high coupling efficiency by aligning the beam distribution in the favorable fast-axis direction rather than the problematic slow-axis direction.
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 solution enhances beam quality in the slow-axis direction, improving the coupling efficiency of the emission light into optical fibers, while maintaining better beam quality in the fast-axis direction.
Implementation Method 1
a beam shaping module that splits the emission light from the light source to a plurality of split-lights in the slow-axis (horizontal) direction
Implementation Method 2
shapes the plurality of split-lights to create the shaped-beam that are arrayed in the fast-axis (vertical) direction
Data Source
AI summary
A light-emitting device improves the beam quality of emission light from a single emitter light source in the slow-axis direction, and includes a light source 10 having a single emitter and a beam shaping module that splits the emission light from the light source into to a plurality of split-lights in the slow-axis direction, and shapes the split-lights as a shaped-beam arrayed in the fast-axis direction, and outputs the shaped-beam.