期刊
ACS PHOTONICS
卷 6, 期 8, 页码 2104-2109出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsphotonics.9b00657
关键词
InGaN; superluminescent diode; low delay; GaN on Si; III nitride photonics
类别
资金
- National Key RD Program [2016YFB0400100, 2016YFB0400104]
- National Natural Science Foundation of China [61534007, 61604168, 61775230, 61804162, 61874131]
- Key Frontier Scientific Research Program of the Chinese Academy of Sciences (CAS) [QYZDB-SSW-JSC014]
- CAS Interdisciplinary Innovation Team
- Key R&D Program of Jiangsu Province [BE2017079]
- Key R&D Program of Guangdong Province [2019B010130001]
- Natural Science Foundation of Jiangsu Province [BK20160401, BK20180253]
- Natural Science Foundation of Jiangxi Province [20181ACB20002, 20181BAB211022]
- Suzhou Science and Technology Program [SYG201725, SYG201846]
- China Postdoctoral Science Foundation [2018M632408]
- Open Fund of the State Key Laboratory of Reliability and Intelligence of Electrical Equipment [EERIKF2018001]
Monolithic integration of an InGaN-based superluminescent diode (SLD) on a Si platform permits the fabrication of a cost-effective, compact, broadband, and low-delay light source for a speckle-free display and visible-light communications (VLC). Here, we report the first demonstration of an InGaN-based multiple quantum wells SLD monolithically grown on Si substrates. The asfabricated SLD produces a close-to-Gaussian electroluminescence spectrum centered at 410 nm, with a broad spectral bandwidth of 3.6 nm (26 meV) at room temperature. The SLD is linearly TE polarized with a degree of polarization as large as 98% when the current increased to 600 mA, which corresponds to a polarization extinction ratio of 20 dB. Such results confirm the stimulated amplification when the diode operates in the superluminescence mode. Furthermore, the SLDs exhibit a low RC delay of 1.77 GHz, suggesting highly promising applications in high-speed transmitter for VLC. This work paves the way for monolithic integration of III nitride onchip light sources on a Si platform.
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