Gate-controlled generation of optical pulse trains using individual carbon nanotubes

Abstract

We report on optical pulse-train generation from individual air-suspended carbon nanotubes under an application of square-wave gate voltages. Electrostatically-induced carrier accummulation quenches photoluminescence, while a voltage sign reversal purges those carriers, resetting the nanotubes to become luminescent temporarily. Frequency domain measurements reveal photoluminescence recovery with characteristic frequencies that increase with excitation laser power, showing that photoexcited carriers quench the emission in a self-limiting manner. Time-resolved measurements directly confirm the presence of an optical pulse train sychronized to the gate voltage signal, and flexible control over pulse timing and duration is demonstrated.

arXiv comment4 pages, 4 figures

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Cited by in corpus (10)

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• Generating single photons at GHz modulation-speed using electrically controlled quantum dot microlenses
• Single carbon nanotubes as ultrasmall all-optical memories
• Cold exciton electroluminescence from air-suspended carbon nanotube split-gate devices
• Tunable electronic correlation effects in nanotube-light interactions
• Room-temperature quantum emission from interface excitons in mixed-dimensional heterostructures
• Super-Resolution Fluorescence Imaging of Carbon Nanotubes Using a Nonlinear Excitonic Process
• Organic molecular tuning of many-body interaction energies in air-suspended carbon nanotubes
• Quantum emission assisted by energy landscape modification in pentacene-decorated carbon nanotubes
• Molecular screening effects on exciton-carrier interactions in suspend carbon nanotubes