Spatial Self-Phase Modulation (SSPM) spectroscopy
Spatial Self-Phase Modulation (SSPM) spectroscopy
The strong light-matter interactions in 2D and 1D materials can produce many interesting nonlinear optical phenomena and quasiparticle excitations that can have far-reaching implications in science and technology. The recently developed SSPM spectroscopy will be very effective in understanding the response of charge density wave (CDW) and their coherent interactions with light in 1D and 2D materials. Recently, we used SSPM to study nonlinear light-matter interactions in MoSe2 based composites and FnGeTe2 (with n = 3, 4 and 5).
Sk Kalimuddin et al., Nonlinear coherent light-matter interaction in 2D MoSe2 nanoflakes for all-optical switching and logic applications, Advanced Optical Materials, 2022 (accepted),
Satyabrata Bera et al., Nonlinear optical properties of 2D vdW ferromagnetic nanoflakes for magneto-optical logic applications, Advanced Optical Materials, 2024
Figure 1. Schematic of the experimental setup and SSPM by suspended MoSe2 nanoflakes (NFs) in acetone solution. (a) Experimental setup for SSPM. (b) The evolution of diffraction ring patterns with the intensity of incident laser. The plot of diffraction ring numbers vs laser intensity. (e) Demonstration of nonreciprocal light propagation in all-optical photonic diode. Sk Kalimuddin et al, 2022 (submitted).