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High power 808 nm vertical cavity surface emitting laser with multi-ring-shaped-aperture structure |
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| Authors: | Hao Y. Q. Shang C. Y. Feng Y. Yan C. L. Zhao Y. J. Wang Y. X. Wang X. H. Liu G. J. |
| Affiliation: | 1.National Key Laboratory of High-Power Semiconductor Lasers, Changchun University of Science and Technology, Weixing Rd 7089, Changchun, 130022, China ;2.School of Materials Science and Engineering, Harbin Institute of Technology, West St 92, Harbin, 150001, China ; |
| Abstract: | The carrier conglomeration effect has been one of the main problems in developing electrically pumped high power vertical cavity surface emitting laser (VCSEL) with large aperture. We demonstrate a high power 808 nm VCSEL with multi-ring-shaped-aperture (MRSA) to weaken the carrier conglomeration effect. Compared with typical VCSEL with single large aperture (SLA), the 300-μm-diameter VCSEL with MRSA has more uniform near field and far field patterns. Moreover, MRSA laser exhibits maximal CW light output power 0.3 W which is about 3 times that of SLA laser. And the maximal wall-plug efficiency of 17.4% is achieved, higher than that of SLA laser by 10%. |
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