Exceptional ultrafast nonlinear optical response of functionalized silicon nanosheets

Abstract

This study reveals that the functionalization of silicon nanosheets with styrene and tBuMA leads to nanostructures with exceptional nonlinear optical response. These nanostructures could have potential applications in optoelectronics and photonics.

Push–Pull Carbazole-Based Dyes: Synthesis, Strong Ultrafast Nonlinear Optical Response, and Effective Photoinitiation for Multiphoton Lithography

“…Fitting this peak with a Gaussian-type function provides the autocorrelation profile of the laser, which showed a pulse width of approximately 260 fs. The adjacent, more intense peak corresponds to the contribution of molecular reorientation on the NLO response, which is followed by an exponential-like decay of the molecular system as it relaxes toward the equilibrium. , …”

A 1064 nm laser adaptive limiter with visible light transparency based on one dimensional photonic crystals of LiNbO3 defects

“…Researchers have developed various passive optical limiters based on nonlinear mechanisms, including saturable and reverse saturable absorption, two-photon absorption, and multiphoton absorption. 11–15 However, the current issue with existing optical limiters is that their working principle, based on nonlinear optical effects, demands relatively high intensity radiation. 16 Consequently, the transmittance of an optical limiter begins to decrease at a much higher level of incident radiation than is required for optical sensor protection in most cases.…”