All‐Inorganic Transparent Composite Materials for Optical Limiting

Abstract

Nonlinear optical limiting, which enables dynamic radiation filtration, has important implications for photonics, medicine, and advanced manufacturing. A major challenge is the scalable fabrication of all‐inorganic materials with good stability, high optical quality, and excellent optical limiting performance. Herein, a topological engineering strategy is presented for constructing all‐inorganic composite titanate glass with robust performance in optical radiation control. Notably, the rational control of the topological configuration of highly polarized species and their local organization leads to the considerable enhancement of two‐photon absorption coefficients (≈7 times). Mechanical response can also be improved with an estimated elastic modulus and hardness of 10.5 and 115.4 GPa, respectively. This improvement allows the creation of novel all‐inorganic composite materials with excellent ability for dynamic optical radiation filtration. Results suggest that the proposed topological engineering strategy for constructing titanate glass can be extended to other highly polarized glass systems to develop a new generation of nonlinear photonic materials.

Flexible and Transparent Oligothiophene-o-Carborane-Containing Hybrid Films for Nonlinear Optical Limiting Based on Efficient Two-Photon Absorption

“…With increasing E in intensity, the linear relationship is deviated and gives rise to a typical OPL behavior. The clamping levels at 650 nm is 0.31 μJ for 1 – 1 , 0.34 μJ for 1 – 2 , and 0.26 μJ for 2 – 1 , respectively, following the trend of 1 – 2 ≈ 1 – 1 > 2 – 1 (Figure c). − In addition, most of experimental points fall on the fitted curves, demonstrating 2PA is the main mechanism of the reduced transmittance curves for the OPL behaviors. From the results, it is evident that the lower of the limiting threshold value of the fluorophore 1 – 2 , the better for further developing OPL devices.…”

Tin Metal Cluster Compounds as New Third-Order Nonlinear Optical Materials by Computational Study

“…Nonlinear optics is a new branch of science developed after the advent of the laser and has become one of the most popular subjects in the modern science frontier. − With the rapid development of optical research, the research of the third-order nonlinear optical (NLO) materials has gradually become a research hotspot in the optical field, such as optical switching, optical limiting, and ultrafast photonics . The third-order NLO materials mainly include nano quantum dot materials, , metal-oxo­(sulfur) clusters, − metal clusters, supermolecular cages, conjugated organic molecules, − and inorganic hybrid materials …”

“…8 The third-order NLO materials mainly include nano quantum dot materials, 9,10 metal-oxo(sulfur) clusters, 11−15 metal clusters, 16 supermolecular cages, 17 conjugated organic molecules, 18−20 and inorganic hybrid materials. 21 Tin has a wide range of oxidation states, various structures, and bonding modes, and it also has a wide range of properties. 22 Tin compounds are not as oxyphilic and not as prone to hydrolysis as Si or Ge compounds, so they have the advantages of good stability and good application prospects, such as fluid sensors, 23 solar cells, 24 supercapacitors, 25 biomedicine, 26 and catalysis.…”

A triphenylamine-based Pt(ii) metallacage via coordination-driven self-assembly for nonlinear optical power limiting

“…Recent years have witnessed the booming development of the research of organic materials for OPL applications. 71 The ideal OPL materials should exhibit intensity-dependent absorption, meaning that it shows high transmittance at low laser intensity while show strong absorption at high intensity. In short, the OPL materials decrease the output intensity by increasing the input.…”