Laser Heating Station Emitters With Stacked Active Regions
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Solution Overview
Problem
The manufacturing and assembly of laser emitters for container heating stations are complex and energy-intensive, with significant electrical losses due to the large number of laser diodes required, leading to high electrical consumption and increased Joule effect losses.
Innovation Solution
The use of laser diodes with multiple active regions stacked in the emission direction reduces the number of chips needed, simplifying assembly and reducing electrical consumption by operating at lower current intensity, thereby minimizing electrical losses and extending the lifetime of the diodes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional laser diodes with single active region are used, then the heating station can operate, but the number of laser chips required is large, complicating manufacture and assembly
Solution Approach 1:
The laser diode is segmented into multiple active regions stacked in the emission direction, allowing a single chip to provide the laser radiation output that previously required multiple chips, thereby simplifying the overall device structure and assembly
Solution Approach 2:
Multiple active regions are merged into a single laser diode chip structure, combining the functionality of multiple chips into one integrated component, which reduces the total number of chips needed in the heating station
2Loss of energy
If conventional laser diodes with single active region are used, then the heating station can operate, but electrical consumption is high and Joule effect losses are significant
Solution Approach 1:
The electrical operating parameters are changed by using multiple active regions that can operate at lower current intensity, reducing the electrical power consumption and minimizing Joule heating losses in the electrical cables while maintaining the required laser output power
3Duration of action of stationary object
If conventional laser diodes with single active region are used, then the heating station can operate, but the lifetime of the diodes is reduced
Solution Approach 1:
The total power requirement is segmented across multiple active regions, allowing each region to operate at lower current intensity, which reduces stress on the diode materials and extends the operational lifetime of the laser diodes
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 simplifies the manufacturing and assembly of laser emitters, reduces electrical consumption, limits Joule effect losses, and increases the lifespan of the diodes while maintaining equivalent heating performance.
Implementation Method 1
each laser chip comprising at least one laser diode arranged to emit laser radiation in the infrared range
Implementation Method 2
laser radiation in the infrared range... in order to apply a heating profile to these preforms
Implementation Method 3
relatively significant electrical losses take place through the Joule effect in the electrical cables
Data Source
AI summary
A heating station of a container manufacturing installation, the heating station having a plurality of laser emitters wherein each laser emitter includes a plurality of laser chips mounted on an external face of at least one support. In example embodiments, each laser chip includes at least one laser diode arranged to emit laser radiation in the infrared range in an emission direction substantially perpendicular to the external face of the support. In example embodiments, each laser diode includes at least two active regions stacked on one another in the emission direction, wherein each active region participating in the laser radiation emitted by said laser diode.