Description and applications of high-brightness multi-laser-diode system

Rajminder Singh; Aland K. Chin; Qinxin Zu; Ferdynand P. Dabkowski; Richard A. Jollay; Douglas L. Bull; Joseph Fanelli; Douglas S. Goodman; Jeffrey William Roblee; William T. Plummer

doi:10.1117/12.380550

29 March 2000 Description and applications of high-brightness multi-laser-diode system

Rajminder Singh, Aland K. Chin, Qinxin Zu, Ferdynand P. Dabkowski, Richard A. Jollay, Douglas L. Bull, Joseph Fanelli, Douglas S. Goodman, Jeffrey William Roblee, William T. Plummer

Author Affiliations +

Proceedings Volume 3945, Laser Diodes and LEDs in Industrial, Measurement, Imaging, and Sensors Applications II; Testing, Packaging, and Reliability of Semiconductor Lasers V; (2000) https://doi.org/10.1117/12.380550
Event: Symposium on Integrated Optoelectronics, 2000, San Jose, CA, United States

Abstract

This paper describes a novel, high-brightness, multi-laser- diode system that provides great flexibility for use in a wide array of applications. The system consists of eight individual, field-replaceable laser diodes, whose outputs are optically combined to provide a collimated beam. Field replaceability of the diodes and mechanical robustness of this system make it particularly suitable for highly demanding environments. CW optical power greater than 90 Watts at 915 nm was focused to a spot size of 140 X 130 micrometer and a numerical aperture of 0.22 NA. This high CW power density (approximately 5 X 10⁵ W/cm²) was achieved by polarization coupling of two multi-laser-diode systems. Optical power in excess of 52 W was obtained from a single-end pumped, grating stabilized Yb:fiber laser at 1100 nm. This paper will also present results on digital printing, CD-RW disk initialization and solid-state laser pumping. A unique feature of this system is the ability for direct-diode coupling to fiber, eliminating any splicing or connector- related losses.

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Rajminder Singh, Aland K. Chin, Qinxin Zu, Ferdynand P. Dabkowski, Richard A. Jollay, Douglas L. Bull, Joseph Fanelli, Douglas S. Goodman, Jeffrey William Roblee, and William T. Plummer "Description and applications of high-brightness multi-laser-diode system", Proc. SPIE 3945, Laser Diodes and LEDs in Industrial, Measurement, Imaging, and Sensors Applications II; Testing, Packaging, and Reliability of Semiconductor Lasers V, (29 March 2000); https://doi.org/10.1117/12.380550

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