8 February 2012 Newly developed high-power laser diode bars
Author Affiliations +
Abstract
High Power Laser Diode (LD) modules are widely used as high-brightness light sources for pumping solid-state lasers and for direct diode laser processing utilizing a compact feature. The LD bars installed in modules are required with higher output power, efficiency and beam quality. We have optimized the LD bar structure for high output power and efficient operation. The water-cooled heat sink has been designed for excellent thermal performance as well as long-term stable cooling performance. We have also developed the thermal expansion controlled assembly technique to suppress the "smile". As a result, we have achieved an output power of over 200 W and a conversion efficiency of 58% from 940 nm LD bars under continuous wave (CW) operation with very low smile of 0.8 μm.
© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Nobuto Kageyama, Nobuto Kageyama, Takenori Morita, Takenori Morita, Kousuke Torii, Kousuke Torii, Motoki Takauji, Motoki Takauji, Takehito Nagakura, Takehito Nagakura, Junya Maeda, Junya Maeda, Hirofumi Miyajima, Hirofumi Miyajima, Harumasa Yoshida, Harumasa Yoshida, } "Newly developed high-power laser diode bars", Proc. SPIE 8241, High-Power Diode Laser Technology and Applications X, 82410I (8 February 2012); doi: 10.1117/12.905523; https://doi.org/10.1117/12.905523
PROCEEDINGS
8 PAGES


SHARE
RELATED CONTENT

Forward development of kW-class power diode laser bars
Proceedings of SPIE (May 06 2018)
Highly reliable high power AlGaAs GaAs 808 nm diode laser...
Proceedings of SPIE (February 18 2007)
High power high efficiency 910 to 980 nm broad...
Proceedings of SPIE (May 31 2004)
Advances in high-power semiconductor diode lasers
Proceedings of SPIE (January 04 2008)
Highly reliable qcw laser bars and stacks
Proceedings of SPIE (February 12 2008)
Highly reliable high power cw AlGaAs (808 nm) 1 cm...
Proceedings of SPIE (April 09 1995)

Back to Top