NDLI: Simulation and Experimental Study of Laser Hammering for Laser Diode Packaging

Content Provider	IEEE Xplore Digital Library
Author	Wu, Y. Aicheng Zhang Jing Chun Shengyi Li
Copyright Year	1999
Abstract	Laser hammering is a key and effective technique to correct the post-weld-shift in laser welding process. In order to obtain a detailed understanding of the shrinkage deformation principle and magnitude induced by laser Hammering, a finite-element-method (FEM) is employed to analyze the welding shift for the TO-CAN style laser diode package. Detailed relations between welding shift and the beam energy pulse width are obtained. A welding shift measurement system with two noncontact capacitive displacement sensors with high accuracy and high resolution is established. The measurement system can determine the shift direction or deformation angle in real time. The experiment results of this paper will be helpful for the selection of laser beam parameters in the laser hammering process to achieve fast and accurate shift correction
Sponsorship	IEEE Components, Packaging, and Manufacturing Technology Society
Starting Page	163
Ending Page	169
Page Count	7
File Size	1551919
File Format	PDF
ISSN	15213331
Volume Number	30
Issue Number	1
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-03-01
Publisher Place	U.S.A.
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Diode lasers Packaging Welding Laser beams Finite element methods Space vector pulse width modulation Displacement measurement Capacitive sensors Sensor systems Energy resolution post-weld-shift (PWS) Laser diode laser hammering laser welding package
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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