Journal
APPLIED OPTICS
Volume 56, Issue 16, Pages 4873-4881Publisher
OPTICAL SOC AMER
DOI: 10.1364/AO.56.004873
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Funding
- Engineering and Physical Sciences Research Council (EPSRC) [EP/K030884/1]
- Science and Technology Facilities Council (STFC) [ST/H005595/1]
- Engineering and Physical Sciences Research Council [EP/K030884/1] Funding Source: researchfish
- Science and Technology Facilities Council [ST/H005595/1] Funding Source: researchfish
- EPSRC [EP/K030884/1] Funding Source: UKRI
- STFC [ST/H005595/1] Funding Source: UKRI
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We report systematic analysis and comparison of ps-laser microwelding of industry relevant Al6082 parts to SiO2 and BK7. Parameter mapping of pulse energy and focal depth on the weld strength is presented. The welding process was found to be strongly dependent on the focal plane but has a large tolerance to variation in pulse energy. Accelerated lifetime tests by thermal cycling from -50 degrees to +90 degrees C are presented. Welds in Al6082-BK7 parts survive over the full temperature range where the ratio of thermal expansion coefficients is 3.4:1. Welds in Al6082-SiO2 parts (ratio 47.1:1) survive only a limited temperature range.
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