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Author Park, Gyeong Cheol ♦ Taghizadeh, Alireza ♦ Chung, Il-Sug
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ♦ BONDING ♦ GRATINGS ♦ HYBRIDIZATION ♦ LASERS ♦ LAYERS ♦ LIGHT SOURCES ♦ OPERATION ♦ QUANTUM WELLS ♦ REFLECTION ♦ REFRACTIVE INDEX ♦ RESONANCE ♦ SILICON ♦ VISIBLE RADIATION ♦ WAVELENGTHS
Abstract Hybrid grating (HG) reflectors with a high-refractive-index cap layer added onto a high contrast grating (HCG) provide a high reflectance close to 100% over a broader wavelength range than HCGs. The combination of a cap layer and a grating layer brings a strong Fabry-Perot (FP) resonance as well as a weak guided mode (GM) resonance. Most of the reflected power results from the FP resonance, while the GM resonance plays a key role in achieving a reflectance close to 100% as well as broadening the stopband. An HG sample with 7 InGaAlAs quantum wells included in the cap layer has been fabricated by directly wafer-bonding a III-V cap layer onto a Si grating layer. Its reflection property has been characterized. This heterogeneously integrated HG reflector may allow for a hybrid III-V on Si laser to be thermally efficient, which has promising prospects for silicon photonics light sources and high-speed operation.
ISSN 00036951
Educational Use Research
Learning Resource Type Article
Publisher Date 2016-04-04
Publisher Place United States
Journal Applied Physics Letters
Volume Number 108
Issue Number 14


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