Enhanced four wave mixing from MoS2 disks supporting higher-order anapole resonance

Rabindra Biswas; Asish Prosad; Lal Krishna; Varun Raghunathan

doi:10.1117/12.2650009

17 March 2023 Enhanced four wave mixing from MoS₂ disks supporting higher-order anapole resonance

Rabindra Biswas, Asish Prosad, Lal Krishna, Varun Raghunathan

Proceedings Volume 12423, 2D Photonic Materials and Devices VI; 1242308 (2023) https://doi.org/10.1117/12.2650009
Event: SPIE OPTO, 2023, San Francisco, California, United States

Abstract

Layered material such as Transition Metal Dichalcogenides (TMDCs) are known to exhibit very high refractive index making them an excellent candidate for building resonant optical structures that facilitate strong nonlinear optical interaction. In particular, third order nonlinear processes such as third harmonic generation and four wave mixing (FWM) can be significantly boosted in thick TMDC based nanodisks by exciting non-radiating Mie resonances such as anapole modes. Here, we report enhanced FWM from isolated MoS₂ disks supporting higher-order anapole resonances. The MoS₂ disks were fabricated by patterning an MoS₂ flake dry-transferred on a 2.2 micron thick thermal SiO₂ deposited on a silicon wafer. Scattering cross sectional FDTD simulations were performed to extract the dimension of the MoS₂ nanodisk to ensure higher order anapole modes lie within the desired signal wavelength range (1400-1600nm) with a fixed pump wavelength of 1040nm. The final dimensions of MoS₂ disk has a diameter of 1.62μm and a height of 108nm. FWM measurements involving two pump photon and one signal photon were performed by varying the input signal wavelength. Maximum experimental enhancement of 150 times at 1470nm when compared with the un-patterned MoS₂ flake region obtained. Such emerging optical nanostructure based on layered material has potential use as efficient wavelength converters across widely separated wavelength band.

Conference Presentation

Citation Download Citation

Rabindra Biswas, Asish Prosad, Lal Krishna, and Varun Raghunathan "Enhanced four wave mixing from MoS₂ disks supporting higher-order anapole resonance", Proc. SPIE 12423, 2D Photonic Materials and Devices VI, 1242308 (17 March 2023); https://doi.org/10.1117/12.2650009

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