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This research aims to characterize the optical properties of MoSe2 and assess its efficacy for waveguide applications in nanophotonics.

June 19, 2026NanomaterialsOpen Access

Near-Infrared Optical Constants and Guided-Mode Benchmarking of High-Index MoSe2 for Nanophotonics

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Randomized trial evaluates optical constants in MoSe2, indicating enhanced waveguide performance for integration density.

This research aims to characterize the optical properties of MoSe2 and assess its efficacy for waveguide applications in nanophotonics.
Conducted ellipsometry on centimeter-scale MoSe2 crystals to determine refractive index and extinction coefficient.
Utilized s-SNOM to map transversal modes in MoSe2 flakes and analyze waveguide dispersion.
Performed finite-element simulations to compare MoSe2 waveguide performance against WS2.
Measured in-plane refractive index of MoSe2 ranges from 4.1 to 4.7 at 1000-2000 nm.
Found a 3.5-fold increase in coupling length due to enhanced evanescent field suppression.
Achieved a 12.5% increase in on-chip integration density using MoSe2 waveguides.

Yakubovsky et al. (2026) studied this question.

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