Laser Oscillator Housing Temperature Control
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Solution Overview
Problem
Laser oscillators using optical fibers often experience heating issues due to leakage light, which can exceed 100°C and pose a risk to surrounding components, as existing solutions are either complex or insufficient in effectively managing this heat.
Innovation Solution
A laser oscillator design incorporating an optical absorber with high thermal conductivity, supported by a thermally conductive column, and a cooling unit to absorb and dissipate leakage light, along with a reflective material to redirect and absorb stray light, and a high refractive index resin to confine and cool laser light, thereby preventing housing overheating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If an optical absorber is provided to absorb leakage light, then the housing temperature is reduced, but the device complexity increases due to additional components and cooling mechanisms
Solution Approach 1:
The patent combines the optical absorber function and cooling function into a single integrated component. The optical absorber is directly coupled with the cooling unit, allowing heat absorption and heat dissipation to occur through the same structural element, thereby reducing the number of separate components while maintaining effective temperature control of the housing
Solution Approach 2:
The optical absorber acts as an intermediary component between the leakage light source and the cooling unit. It first absorbs the optical energy from leakage light, converting it to thermal energy, and then transfers this heat to the cooling unit for dissipation, effectively mediating the heat management process while protecting the housing
2Temperature
If a cooling unit is added to cool the optical absorber, then the temperature control is improved, but the device complexity and structural complexity increase
Solution Approach 1:
The cooling unit is integrated with the optical absorber through direct thermal coupling. The cooling unit is positioned to be in direct contact with or adjacent to the optical absorber, forming a unified heat management assembly that reduces structural complexity while maintaining effective cooling of the optical absorber
Solution Approach 2:
The patent extracts the cooling function as a separate but integrated unit that can be independently designed and positioned. The cooling unit is configured to specifically target the optical absorber's thermal management needs without requiring complex integration with other system components, simplifying the overall device architecture
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 proposed solution effectively suppresses housing temperature by efficiently absorbing and dissipating leakage light, preventing overheating and ensuring safe operation of the laser oscillator.
Implementation Method 1
an optical absorber positioned between the housing and the fused portion or the curved portion and configured to absorb leakage light from the optical fiber
Implementation Method 2
a thermally conductive support column configured to support the optical absorber, and a cooling unit configured to cool the optical absorber via the thermally conductive support column
Implementation Method 3
a cooling unit configured to cool the optical absorber via the thermally conductive support column
Implementation Method 4
a reflective material to redirect and absorb stray light
Data Source
AI summary
A laser oscillator includes a housing, an optical fiber disposed in the housing and including a fused portion or a curved portion, an optical absorber positioned between the housing and the fused portion or the curved portion and configured to absorb leakage light from the optical fiber, a thermally conductive support column configured to support the optical absorber, and a cooling unit configured to cool the optical absorber via the thermally conductive support column.