High power, high efficiency continuous-wave 808 nm laser diode arrays

The continuous-wave 100 W-class 808 nm laser diode arrays with extremely high power conversion efficiency of 68% were reported at the heatsink temperature of 25 °C. To the best of our knowledge, this was the highest power conversion efficiency at continuous-wave 106 W 808 nm laser diode array with 5...

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Bibliographic Details
Published inOptics and laser technology Vol. 97; pp. 297 - 301
Main Authors Wang, Zhenfu, Li, Te, Yang, Guowen, Song, Yunfei
Format Journal Article
LanguageEnglish
Published Kidlington Elsevier BV 01.12.2017
Subjects
Arrays
Conversion
Efficiency
Energy conversion efficiency
Laser arrays
Lasers
Studies
Temperature
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Summary:The continuous-wave 100 W-class 808 nm laser diode arrays with extremely high power conversion efficiency of 68% were reported at the heatsink temperature of 25 °C. To the best of our knowledge, this was the highest power conversion efficiency at continuous-wave 106 W 808 nm laser diode array with 50% fill factor so far. An asymmetric broad waveguide epitaxial structure with very low internal optical loss of 0.5 cm-1 was presented. In order to improve the efficiency, various fill factor devices were studied. The 50 W laser diode array with 30% fill factoir and 1.0 mm cavity length demonstrated power conversion efficiency of 71% at heatsink temperature of 15 °C.
ISSN:0030-3992
1879-2545
DOI:10.1016/j.optlastec.2017.07.015