Frequency Conversion Body with Integrated Heat Sink
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Solution Overview
Problem
Radiation field provision devices face challenges in maintaining efficient frequency conversion and reducing thermal interference, particularly in pulsed radiation fields with high peak power densities, due to thermal inhomogeneities and parasitic heat generation.
Innovation Solution
A radiation field provision device incorporating a frequency conversion body with a frequency-converting medium and a reflector, where the reflector provides a free installation space and a heat sink behind it to dissipate heat generated by parasitic effects, maintaining a temperature gradient aligned with the radiation propagation direction and enhancing cooling efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a frequency conversion body is used for high peak power density radiation fields, then frequency conversion efficiency is improved, but thermal inhomogeneities and parasitic heat generation increase
Solution Approach 1:
The frequency conversion body is divided into multiple frequency-converting elements arranged in series, where each element processes a portion of the radiation field. This segmentation distributes the heat generation across multiple smaller elements rather than concentrating it in a single large element, reducing thermal inhomogeneity while maintaining overall conversion efficiency
Solution Approach 2:
Different regions of the frequency conversion body are optimized for different functions: the front regions are designed for optimal frequency conversion with specific crystal orientations and thicknesses, while rear regions incorporate heat sinks and cooling channels. This local differentiation allows each region to perform its specialized function effectively without compromising the other
2Power
If the frequency conversion body is made thicker to handle high power, then power handling capacity is improved, but thermal inhomogeneities increase
Solution Approach 1:
Instead of using a single thick frequency conversion element, the system employs multiple thinner elements arranged in series. Each thin element has reduced thermal mass and shorter heat conduction paths, minimizing thermal gradients. The cumulative effect of multiple elements achieves the required power handling capacity without the thermal penalties of a single thick element
Solution Approach 2:
The solution transitions from increasing thickness in one dimension to distributing the function across multiple elements in series along the optical path. This dimensional redistribution allows the system to achieve equivalent power handling through increased optical path length rather than increased material thickness, thereby reducing thermal inhomogeneity
3Temperature
If cooling systems are added to the frequency conversion body, then heat dissipation is improved, but device complexity increases
Solution Approach 1:
The cooling functionality is merged directly into the frequency conversion body structure itself. Heat sinks are integrated into the rear surfaces of the frequency-converting elements, and cooling channels are incorporated into the mounting substrate. This integration eliminates the need for separate external cooling systems and reduces the number of discrete components and connections required
Solution Approach 2:
The frequency conversion body is designed to be self-cooling through built-in thermal management features. The structure itself provides thermal conduction paths to heat sinks, and the geometry is optimized to facilitate passive heat dissipation. This self-service approach reduces complexity by eliminating the need for active cooling control systems
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 configuration improves the efficiency of frequency conversion, reduces thermal interference, and maintains the quality of the radiation field, making it suitable for pulsed radiation fields with high peak power densities.
Implementation Method 1
a radiation field component in the frequency-converting medium of the frequency conversion body (110) which is involved in a frequency conversion is at least partially converted by the frequency conversion into a radiation field component with a different frequency
Implementation Method 2
the reflector (120) is arranged on a reflector side (112) of a part (115) of the frequency conversion body (110) formed from the frequency-converting medium
Implementation Method 3
heat which is generated, for example, by parasitic effects in the frequency conversion body, can be substantially dissipated by a heat sink arranged behind the reflector
Implementation Method 4
The geometric embodiment of the frequency conversion body (110) is such that an at least approximately one-dimensional heat conduction, in particular in the direction of the side opposite the entry side (126) and/or exit side (128), takes place in it
Data Source
AI summary
Proposed is a radiation field provision device, in which in particular an optical path for a radiation field is defined, comprising a frequency conversion body, wherein the frequency conversion body is partially formed from a frequency-converting medium and a reflector.