Ultraviolet dynamical optical limiting in a glass containing NaNbO_3 nanocrystals

Almeida, Euclides; Jorge, Kelly C.; Menezes, Leonardo de S.; Araújo, Cid B. de; Lipovskii, A. A.

doi:10.1364/josab.30.001284

Cited by 5 publications

(3 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Inorganic glasses containing niobate salts have also been used for OL. For instance, sodium niobate (NaNbO 3 ) glasses , have shown dependency of the OL effect on the population number of nanocrystals in the glass, with OL capability increasing upon population increase. Lithium niobate (LiNbO 3 ) doped with iron or cobalt gave much improved results concerning the OL effect, with the Co-doped system displaying NLO third-order susceptibility (χ 3 ) in the order of 10 –5 esu .…”

Section: Inorganic Materialsmentioning

confidence: 99%

Nonlinear Optical Materials for the Smart Filtering of Optical Radiation

2016

View full text Add to dashboard Cite

The control of luminous radiation has extremely important implications for modern and future technologies as well as in medicine. In this Review, we detail chemical structures and their relevant photophysical features for various groups of materials, including organic dyes such as metalloporphyrins and metallophthalocyanines (and derivatives), other common organic materials, mixed metal complexes and clusters, fullerenes, dendrimeric nanocomposites, polymeric materials (organic and/or inorganic), inorganic semiconductors, and other nanoscopic materials, utilized or potentially useful for the realization of devices able to filter in a smart way an external radiation. The concept of smart is referred to the characteristic of those materials that are capable to filter the radiation in a dynamic way without the need of an ancillary system for the activation of the required transmission change. In particular, this Review gives emphasis to the nonlinear optical properties of photoactive materials for the function of optical power limiting. All known mechanisms of optical limiting have been analyzed and discussed for the different types of materials.

show abstract

Section: Inorganic Materialsmentioning

confidence: 99%

Nonlinear Optical Materials for the Smart Filtering of Optical Radiation

2016

View full text Add to dashboard Cite

show abstract

“…Under the same input laser intensity, the valley exhibited by [TiO 6 ] was broader and deeper than that shown by [TiO 4 ] and [TiO 5 ]. The two‐photon absorption (TPA) model could be used to fit the empirical data because the band gap E g of all the investigated samples and the photon energy E p of the induced laser satisfied the inequality E p < E g < 2 E p , which is the most typical origin of the optical limiting effect of glass based nonlinear materials 31–33. Based on this model, the dependence of absorption coefficient α on laser radiation intensity I can be written as follows

α = α_{0} + β I

where α 0 is the linear absorption coefficient and β is the TPA coefficient.…”

Section: Resultsmentioning

confidence: 99%

“…Various types of low‐dimensional nonlinear materials with improved nonlinear responses have been reported; these materials include TiS 2 layers,23 hexagonal BN nanosheets,24,25 graphene‐based materials,26–28 and 1D CdS29 and CdTe30 quantum dots. In addition, inorganic glass and their derived composites have attracted considerable interest as nonlinear optical limiting material candidates due to their stable chemical and physical properties 31–33. These attractive properties indicate their potential applications under harsh conditions.…”

Section: Introductionmentioning

confidence: 99%

All‐Inorganic Transparent Composite Materials for Optical Limiting

Feng

Shi

Chen

et al. 2020

Advanced Optical Materials

View full text Add to dashboard Cite

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.

show abstract