Third harmonic generation at 9.6 THz in single layer graphene nano-resonators

Miriam S. Vitiello

doi:10.1117/12.3004166

9 March 2024 Third harmonic generation at 9.6 THz in single layer graphene nano-resonators

Miriam S. Vitiello

Proceedings Volume PC12895, Quantum Sensing and Nano Electronics and Photonics XX; PC128950D (2024) https://doi.org/10.1117/12.3004166
Event: SPIE OPTO, 2024, San Francisco, California, United States

Abstract

INVITED Talk Owing to its intrinsically large and electrically tunable non-linear optical response, graphene has recently been adopted as a core nanomaterial for such multiple optical harmonic generation at frequencies < 2 THz. By employing engineered nanostructures to funnel light into small volumes and hence intensify the nonlinear optical processes with spectral and spatial control, emission in the 12 – 5 THz range, can potentially be addressed. This important frequency range currently lacks a practical laser technology because the Restrahlenband of common III-V semiconductors prevent the development of a solid-state laser using these materials. In this talk I’ll report on generation of light at 9.63 THz by optically pumping a graphene circular split ring resonator (CSRR) array with a high-power, 3.21-THz-frequency quantum cascade laser. The mode confinement provided by the optically-pumped CSRR enhances the pump power density, allowing third harmonic generation in a frequency range where compact sources do not currently exist, opening a plethora of novel application fields.

Conference Presentation

Citation Download Citation

Miriam S. Vitiello "Third harmonic generation at 9.6 THz in single layer graphene nano-resonators", Proc. SPIE PC12895, Quantum Sensing and Nano Electronics and Photonics XX, PC128950D (9 March 2024); https://doi.org/10.1117/12.3004166

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