Advances in bonding technology for high power diode laser bars

Jingwei Wang; Xiaoning Li; Dong Hou; Feifei Feng; Yalong Liu; Xingsheng Liu

doi:10.1117/12.2079619

20 February 2015 Advances in bonding technology for high power diode laser bars

Jingwei Wang, Xiaoning Li, Dong Hou, Feifei Feng, Yalong Liu, Xingsheng Liu

Proceedings Volume 9346, Components and Packaging for Laser Systems; 934605 (2015) https://doi.org/10.1117/12.2079619
Event: SPIE LASE, 2015, San Francisco, California, United States

Abstract

Due to their high electrical-optical conversion efficiency, compact size and long lifetime, high power diode lasers have found increased applications in many fields. As the improvement of device technology, high power diode laser bars with output power of tens or hundreds watts have been commercially available. With the increase of high current and output power, the reliability and lifetime of high power diode laser bars becomes a challenge, especially under harsh working conditions and hard-pulse operations. The bonding technology is still one of the bottlenecks of the advancement of high power diode laser bars. Currently, materials used in bonding high power diode laser bars are commonly indium and goldtin solders. Experimental and field application results indicates that the lifetime and reliability of high power diode laser bars bonded by gold-tin solder is much better than that bonded by indium solder which is prone to thermal fatigue, electro-migration and oxidization. In this paper, we review the bonding technologies for high power diode laser bars and present the advances in bonding technology for single bars, horizontal bar arrays and vertical bar stacks. We will also present the challenges and issues in bonding technology for high power diode laser bars and discuss some approaches and strategies in addressing the challenges and issues.

Citation Download Citation

Jingwei Wang, Xiaoning Li, Dong Hou, Feifei Feng, Yalong Liu, and Xingsheng Liu "Advances in bonding technology for high power diode laser bars", Proc. SPIE 9346, Components and Packaging for Laser Systems, 934605 (20 February 2015); https://doi.org/10.1117/12.2079619

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available