Y.D. Liu, M. Sheen, Y. Hsu, H. Hsu, Y. Tsai, W. Cheng
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引用次数: 0
Abstract
A quantitative measurement using a 25.4-nm resolution system to online measure the postweld shift in laser-welded butterfly-type laser module package is demonstrated. The relative coupling efficiency can be regained up to an average of 88%.