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A Nanomembrane-Based Bandgap-Tunable Germanium Microdisk Using Lithographically-Customizable Biaxial Strain for Silicon-Compatible Optoelectronics
David S. Sukhdeo, Donguk Nam, Ju-Hyung Kang +2
Strain engineering has proven to be vital for germanium-based photonics, in particular light emission. However, applying a large permanent biaxial strain to germanium has been a ch…
Electrically Tunable Optical Absorption in a Graphene-based Salisbury Screen
Vrinda Thareja, Juhyung Kang, Hongtao Yuan +4
We demonstrate a graphene-based Salisbury screen consisting of a single layer of graphene placed in close proximity to a gold back reflector. The light absorption in the screen can…
Broadband Linear-Dichroic Photodetector in a Black Phosphorus Vertical p-n Junction
Hongtao Yuan, Xiaoge Liu, Farzaneh Afshinmanesh +12
The ability to detect light over a broad spectral range is central for practical optoelectronic applications, and has been successfully demonstrated with photodetectors of two-dime…
Second harmonic generation in GaAs photonic crystal cavities in (111)B and (001) crystal orientations
Sonia Buckley, Marina Radulaski, Jan Petykiewicz +5
We demonstrate second harmonic generation in photonic crystal cavities in (001) and (111)B oriented GaAs. The fundamental resonance is at 1800 nm, leading to second harmonic below…