7 results about "Nonlinear optical material" patented technology

The invention discloses a lanthanum ion doped oxygen calcium yttrium borate nonlinear optical crystal material and a preparation method thereof, the lanthanum ion doped oxygen calcium yttrium borate nonlinear optical crystal material belongs to a monoclinic system, the space group is Cm, the chemical formula is La0.1: Y0. 9Ca4O (BO3) 3, the frequency multiplication coefficient is 2 * KDP, the ultraviolet cut-off edge is less than 200 nm, and no absorption peak with the intensity greater than or equal to 0.2 cm <-1 > exists in the range of 200-2500 nm. Therefore, the lanthanum ion doped yttrium calcium oxide borate crystal can be used as a nonlinear optical material with a wide application prospect in the field of optical parameter chirped pulse amplification.

The application discloses application of In2Te5 crystal in preparation of a nonlinear optical device in an infrared wave band. The In2Te5 crystal belongs to a monoclinic system, a Cc space group, has a cell parameter of alpha = gamma = 90 DEG, beta = 91.65 DEG, z = 4, and a unit cell volume of 0.56. The In2Te5 crystal can be used as a nonlinear optical material in preparation of a nonlinear optical device, and its frequency doubling coefficient is about 2-3 times of that of a ZnGeP2 crystal and 15 times of that of an AgGaS2 crystal. The infrared transmission range of the In2Te5 crystal can reach 30 microns. The optical birefringence of the In2Te5 crystal can reach 0.56, so the In2Te5 crystal can be used as a good mid-infrared nonlinear optical material, a mid-infrared photoconductive material and a mid-infrared birefringent material, and can be widely applied in various nonlinear optical fields, especially in the nonlinear optical application in the mid-infrared wave band.

This invention provides a porphyrin polymer near-infrared organic nonlinear optical material, its preparation method, and its applications. The electron donor-acceptor type organic three-component conjugated polymer of this invention possesses near-infrared organic nonlinear optical properties and can be used as a laser limiting material in the field of laser protection.

A system and methods for low noise multi-channel optical signal amplification using an optical parametric amplifier are described. A waveguide etched into a ϰ(2) nonlinear optical material, such as thin film lithium niobate (TFLN), provides confined optical parametric amplification using a pump laser to amplify multi-channel optical signals of lower energy. Noise and crosstalk between channels within the OPA waveguide amplifier can be reduced if the OPA waveguide physical dimensions, along with the optical properties of the waveguide material, are adjusted to create a group velocity mismatch (GVM) between the propagating pump light and the amplified signal channels. OPA waveguide designs with larger GVM reduces crosstalk between modes in the waveguide, reducing noise, as measured by the error vector magnitude (EVM), and improving signal fidelity for the amplified optical signals.

The application relates to a method for enhancing the nonlinear optical performance of SnS2 nanosheets through electrostatic doping. First, SnS2 nanosheets are prepared on a fluorine-doped tin oxide (FTO) substrate by a chemical vapor deposition method, and then hydrogen ion intercalated SnS2-H + The electrostatic doping causes the band gap to shrink and a strong built-in electric field to be generated, so that the nonlinear optical performance of the material is enhanced. In addition, the saturated absorption response of the material enables the application to an optical neural network as a nonlinear activation function, and exhibits application potential in machine learning tasks. The SnS2-H + The application establishes a promising and convenient nonlinear optical material, and provides new insights for the design exploration and simple synthesis of high-performance nonlinear absorption materials.

The application provides a self-crosslinking organic electro-optic molecular glass material and application. The self-crosslinking organic electro-optic molecular glass material of the application introduces two different functional groups on a bridge and a donor respectively, the bridge being a 4-(diethylamino)salicylaldehyde donor, an isofuroxan electronic bridge and a CF3-TCF electronic acceptor chromophore, a chromophore molecule with a single-chromophore self-crosslinking function is synthesized, through a D-A crosslinking reaction between the functional groups, a high-chromophore-loaded nonlinear optical material with high electro-optic coefficient and high thermal stability is prepared without a small molecule or polymer crosslinking agent.

The object of this invention is to provide a copolymer with nonlinear optically active sites capable of forming a crack-free film, a nonlinear optical material comprising the copolymer, and an electro-optical element. The copolymer of this invention is characterized by comprising repeating structural units (A) having adamantyl alkyl groups and repeating structural units (B) having nonlinear optically active sites, as represented by formula (1). (Where R...) 1 W represents a hydrogen atom or a methyl group. 1 Indicates -O-, -S-, or -NH-, L 1 This indicates a divalent hydrocarbon group with 1 to 30 carbon atoms that may contain single bonds, ether bonds, and / or ester bonds, or *-L. 2 -NHC(=O)O- (* indicates W) 1 (bonding end), L 2 Ad represents a divalent hydrocarbon group with 1 to 30 carbon atoms that may contain ether bonds and / or ester bonds; Ad represents an adamantyl group that may be substituted by an alkyl group with 1 to 5 carbon atoms; R represents a divalent hydrocarbon group that may contain ether bonds and / or ester bonds. 2 The alkoxy group represents 1 to 10 carbon atoms bonded to any carbon atom constituting the adamantyl alkyl group, where n represents an integer from 1 to 15. (1)