scholarly journals A Theoretical Perspective on Strategies for Modeling High Performance Nonlinear Optical Materials

2021 ◽  
Vol 8 ◽  
Author(s):  
Rehana Bano ◽  
Maria Asghar ◽  
Khurshid Ayub ◽  
Tariq Mahmood ◽  
Javed Iqbal ◽  
...  
Keyword(s):  
Nonlinear Optics ◽  
High Performance ◽  
Nonlinear Optical ◽  
Materials Science ◽  
Theoretical Perspective ◽  
Research Work ◽  
Large Area ◽  
Excess Electrons ◽  
Potential Applications ◽  
Nlo Materials

Nonlinear optical (NLO) materials have spanned a large area of science and technology owning to their potential applications in optoelectronics. The invention of the first Ruby laser has sparked a fresh interest in the area of nonlinear optics. The computational designing and experimental synthesis of organic and inorganic NLO materials with higher order nonlinearities come into vogue in the field of materials science. To date, several strategies including metal ligand framework, push pull mechanism, diradical character, and so on have been devised to enhance the NLO response of materials. In addition, introduction of diffuse excess electrons is an efficient approach to design noncentrosymmetric materials for nonlinear optics. The current review highlights a systematic array of different computational studies (covering the last decade of intensive research work) for the theoretical designing of NLO materials. In the present review, theoretical designing from the simplest NLO material to the complex alkali, alkaline earth, transition, and superalkali doped nanomaterials is summarized. The emergence of excess electrons strategy has played a pivotal role in enhancing the NLO properties especially hyperpolarizabilities. We expect that this review will provide a better understanding of the NLO responses of nanoclusters, paving the way for the advancement of hi-tech NLO materials to meet the real challenges in optoelectronics.

A Theoretical Investigation on Second-Order NLO Properties of Organic Substitutions of [Mo6O19]2- and [MoW5O19]2-

2019 ◽  
Vol 960 ◽  
pp. 268-273
Author(s):  
Qi Li ◽  
Xiu Hua Yuan
Keyword(s):  
Molecular Structure ◽  
High Performance ◽  
Density Functional ◽  
Nonlinear Optical ◽  
Second Order ◽  
Functional Theory ◽  
Nlo Properties ◽  
Potential Applications ◽  
Nlo Materials ◽  
Different Parts

In this study, density functional theory (DFT) was used to calculate second-order polarizabilities and second-order polarizabilities densities of a series of organic substitution for Lindqvist-type polyoxometalates (POMs), and the nonlinear optical (NLO) properties was also analyzed. We found that βzzz has the main contribution to β value. The expansion of molecular structure on z-axis greatly increased second-order polarizabilities. Both the size of the organic segments and metal hybridization exert an influence on β value. The analysis on the second-order polarizabilities density is used to explain the NLO phenomenon. In the present investigation, metal hybridization and π-conjugation changed the contribution of βzzz value from different parts. The results of this work will contribute to the potential applications in high-performance NLO materials.

scholarly journals Langasite Family Midinfrared Nonlinear Optical Oxide Materials: Structure, Property, and Applications

2017 ◽  
Vol 2017 ◽  
pp. 1-13 ◽  
Author(s):  
Haichao Lan ◽  
Fei Liang ◽  
Zheshuai Lin ◽  
Haohai Yu ◽  
Huaijin Zhang ◽  
...  
Keyword(s):  
Experimental Data ◽  
Metal Oxides ◽  
High Performance ◽  
Nonlinear Optical ◽  
Damage Threshold ◽  
Laser Damage Threshold ◽  
Laser Damage ◽  
Oxide Materials ◽  
Structure Property ◽  
Nlo Materials

Midinfrared (IR) nonlinear optical (NLO) materials with high performance are vital in important technological applications in many civil and military fields. Very recently, langasite family compounds have attracted much attention due to their wide transparency to mid-IR region and ultrahigh laser damage threshold (LDT). In this brief review, three important compounds—LGS, LGN, and LGT—are investigated and analyzed based on available experimental data. The electrooptical (EO) Q-switch and mid-IR OPO applications are summarized in detail. Finally, promising search directions for new metal oxides that have good mid-IR NLO performances are discussed.

Designing nonlinear optical molecule by incorporating the planar tetracoordinate unit NAl4- or CAl42- into decaborane B10H14

2014 ◽  
Vol 13 (05) ◽  
pp. 1450042
Author(s):  
Fang Ma ◽  
Ti-Fang Miao ◽  
Ying-Tao Liu
Keyword(s):  
High Performance ◽  
Nonlinear Optical ◽  
Bonding Interaction ◽  
Boron Chemistry ◽  
Important Approach ◽  
Nlo Materials ◽  
Moller Plesset ◽  
Molecular Orbital Analysis ◽  
Borane Cluster ◽  
Atomic Radii

Molecular Incorporation is an important approach of providing novel compounds with fascinating structures. In this paper, we theoretically described the incorporation of the central planar tetracoordinate molecules NAl 4- or CAl 42- into borane cluster B 10 H 14. By molecular orbital analysis, a novel four-fold Al – H bonding interaction was found, and it contributes to the molecular incorporation. In addition, we found that the counterion Li + is critical for the neutral incorporation species, due to its small atomic radii and little positive charge. To measure the nonlinear optical (NLO) response, the static first hyperpolarizabilities (β0) were evaluated at the second-order Møller–Plesset (MP2) level. The β0 values are 1708 a.u and 8682 a.u for [ B 10 H 14⋯ NAl 4]- and [ B 10 H 14⋯ CAl 4]2-, respectively, which indicates that the charge plays a significant role on deciding the value of β0. Moreover, it is different for the change of β0 value brought by counterion Li +. Li + decreases the β0 value of [ B 10 H 14⋯ CAl 4]2-, while it increases the β0 value of [ B 10 H 14⋯ NAl 4]-, therein, the sandwich-like B 10 H 14– Li – NAl 4( I ) exhibits considerable β0 value (31,253 a.u.). This reveals that it is possible to explore high-performance NLO materials based on suitable molecular incorporation. Besides, the present study is also expected to enrich the knowledge of the planar tetracoordinate carbon chemistry and boron chemistry.

Recent investigations on nonlinear absorption properties of carbon nanotubes

Nanophotonics ◽  
2020 ◽  
Vol 9 (4) ◽  
pp. 761-781 ◽  
Author(s):  
Hongwei Chu ◽  
Ying Li ◽  
Cong Wang ◽  
Han Zhang ◽  
Dechun Li
Keyword(s):  
Carbon Nanotubes ◽  
Optical Properties ◽  
Nonlinear Optical ◽  
Materials Science ◽  
Hollow Structure ◽  
Future Research ◽  
Nanometer Scale ◽  
Absorption Properties ◽  
Potential Applications ◽  
Carbon Based Nanomaterials

AbstractCarbon nanotubes (CNTs) are carbon based nanomaterials with long hollow structure and diameter at the nanometer scale. The chirality in combination with the radius determines the unique properties of CNTs. These CNTs with different properties have wide applications in the nanotechnology, electronics, photonics, and other fields in materials science and technology. In this review, we highlight the recent investigations on the nonlinear optical properties and applications in the lasers. The future research aspects and potential applications are discussed at the end of the review.

scholarly journals Elevating silicon into a high performance nonlinear optical platform through the integration of 2D graphene oxide thin films

2021 ◽  
Author(s):  
David Moss
Keyword(s):  
High Performance ◽  
Nonlinear Optical ◽  
Kerr Nonlinearity ◽  
Photonic Devices ◽  
Silicon On Insulator ◽  
Layer By Layer ◽  
Large Area ◽  
Precise Control ◽  
Highly Nonlinear ◽  
Coating Method

Abstract Layered two-dimensional (2D) GO films are integrated with silicon-on-insulator (SOI) nanowire waveguides to experimentally demonstrate an enhanced Kerr nonlinearity, observed through self-phase modulation (SPM). The GO films are integrated with SOI nanowires using a large-area, transfer-free, layer-by-layer coating method that yields precise control of the film thickness. The film placement and coating length are controlled by opening windows in the silica cladding of the SOI nanowires. Owing to the strong mode overlap between the SOI nanowires and the highly nonlinear GO films, the Kerr nonlinearity of the hybrid waveguides is significantly enhanced. Detailed SPM measurements using picosecond optical pulses show significant spectral broadening enhancement for SOI nanowires coated with 2.2-mm-long films of 1 − 3 layers of GO, and 0.4-mm-long films with 5 − 20 layers of GO. By fitting the experimental results with theory, the dependence of GO’s n2 on layer number and pulse energy is obtained, showing interesting physical insights and trends of the layered GO films from 2D monolayers to quasi bulk-like behavior. Finally, we show that by coating SOI nanowires with GO films the effective nonlinear parameter of SOI nanowires is increased 16 fold, with the effective nonlinear figure of merit (FOM) increasing by about 20 times to FOM > 5. These results reveal the strong potential of using layered GO films to improve the Kerr nonlinear optical performance of silicon photonic devices.

Ultra-High-Tg Chromophoric Polyimides and Polyureas as High-Performance Nonlinear Optical Materials

1995 ◽  
Vol 413 ◽  
Author(s):  
Lifeng Geng ◽  
Jiafu Wang ◽  
Tobin J. Marks ◽  
Weiping Lin ◽  
Haitian Zhou ◽  
...  
Keyword(s):  
Optical Materials ◽  
High Performance ◽  
Nonlinear Optical ◽  
Second Order ◽  
Nonlinear Optical Materials ◽  
Careful Attention ◽  
Nlo Materials ◽  
Nlo Chromophores ◽  
Diallylbisphenol A ◽  
Aging In Air

ABSTRACTThree approaches to the construction of high-Tg polyimides and polyureas as second-order NLO materials are discussed. In the first approach, copolymerization of bismaleimides with o,o‚-diallylbisphenol-A followed by functionalization with high-β NLO chromophores using a Mitsunobu procedure yields, after poling and curing, a series of heavily crosslinked chromophoric polyimides with Tg values as high as 320°C and partially resonant χ(2) responses as high as 1.0×10-7 esu (42 pm/V at 1064 nm, 1.17 eV). In the second two approaches, copolymerization of the chromophore 4,5-bis(4‚-aminophenyl)-2-(4„- nitrophenyl)imidazole with bismaleimides or diisocyanates yields polyimides and polyureas with Tg values as high as 292°C and partially resonant χ(2)values as high as 0.62× 10-7 esu(25 pm/V at 1064 nm). It is found that careful attention to the details of curing and crosslinking during poling results in NLO- active matrices exhibiting negligible decay in ( on aging in air at 100°C for periods of 1,000-4,000 h. The imidazole based materials exhibit only about 10% χ(2) decay on aging for 100 h at 200°C under N2.

Novel Organic Sol-Gel Materials For Second-Order Nonlinear Optics

1993 ◽  
Vol 328 ◽  
Author(s):  
R. J. Jeng ◽  
G. H. Hsiue ◽  
J. I. Chen ◽  
S. Marturunkakul ◽  
L. Li ◽  
...  
Keyword(s):  
Nonlinear Optics ◽  
Nonlinear Optical ◽  
Sol Gel ◽  
Optical Nonlinearity ◽  
Second Order ◽  
New Class ◽  
Nlo Materials

ABSTRACTA new class of organic sol-gel second-order nonlinear optical (NLO) Materials based on hexa (Methoxymethyl) Melamine has been investigated. NLO active chromophores, 4- (4′-nitrophenylazo) aniline and 4-amino-4′-nitrobiphenyl, were incorporated into the Melamine Matrices. Samples exhibit second-order optical nonlinearity after poling and curing at 220 °C for 30 Min. The synthesis, preparation, and characterization of these materials are reported.

Ordered structures of alkylated carbon dots and their applications in nonlinear optics

2020 ◽  
Vol 8 (26) ◽  
pp. 8980-8991 ◽  
Author(s):  
Keyang Yin ◽  
Dandan Lu ◽  
Wendong Tian ◽  
Rui Zhang ◽  
Haohai Yu ◽  
...  
Keyword(s):  
Nonlinear Optics ◽  
Carbon Dots ◽  
Nonlinear Optical ◽  
Self Organization ◽  
Saturable Absorption ◽  
Reverse Saturable Absorption ◽  
Ordered Structures ◽  
Alkyl Chains ◽  
Potential Applications ◽  
Film State

C dots with peripheral alkyl chains have been prepared, which undergo self-organization in the solvent-free state. A nonlinear optical response with reverse saturable absorption behavior has been found in the film state, which opens the door for potential applications in laser protection.

scholarly journals Novel ultraviolet (UV) nonlinear optical (NLO) materials discovered by chemical substitution-oriented design

2020 ◽  
Vol 11 (21) ◽  
pp. 5404-5409 ◽  
Author(s):  
Guohong Zou ◽  
Kang Min Ok
Keyword(s):  
Solid State ◽  
High Performance ◽  
Nonlinear Optical ◽  
Chemical Substitution ◽  
Nlo Materials ◽  
Solid State Materials

A brief introduction to chemical substitution-oriented design to discover high performance ultraviolet (UV) nonlinear optical (NLO) solid state materials is presented.

Sign in / Sign up

Export Citation Format

Share Document