Performance and reliability of high-intensity AlGaAs laser arrays

Yuji Nishikawa; Hiroshi Takigawa

doi:10.1117/12.380928

3 April 2000 Performance and reliability of high-intensity AlGaAs laser arrays

Yuji Nishikawa, Hiroshi Takigawa

Proceedings Volume 3889, Advanced High-Power Lasers; (2000) https://doi.org/10.1117/12.380928
Event: Advanced High-Power Lasers and Applications, 1999, Osaka, Japan

Abstract

Changing the layer structure of the AlGaAs LD bars, the dependence of degradation on conversion efficiency and internal loss is examined in this paper. Using four kinds of LD bars mounted on the water-coolers, we measured output and aging characteristics. The internal loss estimated from the free carrier absorption has a close relationship with the degradation of the AlGaAs LD bars. On the other hand, in the region we examined, the conversion efficiency is not the dominant factor in determining the degradation. The free carrier absorption locally raises the lattice temperature and accelerates the propagation of defects in the lattice. On the other hand, the thermal power caused by the injection current uniformly raises the LD temperature and affects the local lattice in minimal manner. Therefore, the degradation dominantly depends on the internal loss.

Citation Download Citation

Yuji Nishikawa and Hiroshi Takigawa "Performance and reliability of high-intensity AlGaAs laser arrays", Proc. SPIE 3889, Advanced High-Power Lasers, (3 April 2000); https://doi.org/10.1117/12.380928

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