Nanopillar quantum well lasers directly grown on silicon and emitting at silicon-transparent wavelengths
Posted on 2017-06-28 - 21:06
Future expansion of computing capabilities relies on a reduction of energy consumption in silicon-based integrated circuits. A promising solution is to replace electrical wires with optical connections, for which a key component is a nanolaser that coherently emits into silicon-based waveguides to route information across a chip, in place of bulky off-chip devices. We report room temperature, sub-μm2 footprint, quantum-well-in-nanopillar lasers grown directly on silicon and silicon-on-insulator (SOI) substrates that emit within the silicon-transparent wavelength range under optical excitation. The laser wavelength is controlled by changing the InGaAs quantum well thickness and alloy composition, quite independent of lattice mismatch with the InP barrier, a unique property of the 3D core-shell growth mode. We achieve excellent luminescence yield and low continuous wave transparency power due to the well-passivated InGaAs/InP interfaces. These sub-μm2 footprint long-wavelength lasers could enable optoelectronic integration and photon routing with silicon waveguides on the technologically relevant SOI platform.
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Lu, Fanglu; Bhattacharya, Indrasen; Sun, Hao; Tran, Thai-Truong D.; Ng, Kar Wei; Malheiros-Silveira, Gilliard N.; et al. (2017). Nanopillar quantum well lasers directly grown on silicon and emitting at silicon-transparent wavelengths. Optica Publishing Group. Collection. https://doi.org/10.6084/m9.figshare.c.3813631.v1
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AUTHORS (7)
FL
Fanglu Lu
IB
Indrasen Bhattacharya
HS
Hao Sun
TT
Thai-Truong D. Tran
KN
Kar Wei Ng
GM
Gilliard N. Malheiros-Silveira
CC
Connie Chang-Hasnain
KEYWORDS
energy consumptionquantum-well-in-nanopillar lasersoptoelectronic integrationreport room temperaturelaser wavelengthsub -μm 2 footprint long-wavelength lasersInP barriersilicon-based waveguidessilicon waveguidesroute information3 D core-shell growth modeoff-chip deviceslattice mismatchsilicon-transparent wavelength rangesub -μm 2 footprintInGaAs quantumwave transparency powerNanopillar quantumSOI platformalloy compositionsilicon-transparent wavelengths Future expansion