4 results about "Laser dye" patented technology

The invention relates to a laser dye solution with a wider laser spectrum output range and a preparation method thereof, belongs to the technical field of laser dyes, and solves the problem that the tunable laser spectrum output range of the laser dye in the prior art is narrower. The laser dye solution comprises a donor dye rhodamine 610, an acceptor dye rhodamine 101 and a solvent. The laser output range of the mixed laser dye containing rhodamine 610 and rhodamine 101 in a dye laser is obviously improved compared with that of a single dye.

The application discloses a kind of for single-color multimode laser output spherical host-guest type micro-nano laser and its preparation method, the micro-nano laser is by the spherical metal organic hybrid material host with distortion topological network structure and laser dye guest composition.Wherein the composition of spherical metal organic hybrid material host is:Zn, organic ligand 2,4,6-tri (3,5-dicarboxyphenyl amino) -1,3,5-triazine, N,N-dimethylformamide.Guest is laser dye.The application is based on spherical metal organic hybrid material as the resonant cavity of micro-nano laser, utilizes its super-smooth surface and excellent circular boundary, avoids boundary scattering loss, effectively provides sufficient feedback for laser oscillation, realizes single-color multimode laser output with high quality factor, narrow half-width, wide mode interval and low laser threshold.Effectively solve the problem that existing micro-nano laser is mostly crystal material, and there is a lot of boundary scattering loss.

This invention provides a laser-resistant viscoelastic composition, its preparation method, and its uses. The viscoelastic composition comprises a rheologically active ingredient, a laser-resistant dye, and a co-solvent. The laser-resistant viscoelastic composition exhibits a transmittance of over 90% in the visible light wavelength range of 550-675 nm, a transmittance of less than 70% in the 300-450 nm and / or 800-1100 nm bands, and a transmittance of 40%-45% in a specific laser wavelength range of 1060-1068 nm. This invention successfully adds a laser-resistant dye to the viscoelastic formulation. This laser-resistant dye has good spectral transmittance in the visible light range, does not affect the surgical field of vision, and does not stain normal intraocular tissues during surgical procedures. It also has good absorption properties at specific laser wavelengths, reducing the impact and damage of lasers on other intraocular tissues. Furthermore, it has certain moisturizing and anti-inflammatory effects and features postoperative removal visualization, ensuring the complete removal of the viscoelastic composition and reducing complications such as high intraocular pressure caused by postoperative residues.

The present invention relates to compounds of the formula (I), a process for its preparation and its use as fluorescent dye that absorbs light emitted from an irradiation source and emits light different from that of the irradiation source and having a wavelength in the range from 680 to 950 nm; in photovoltaic applications; or as semiconductor in organic electronic applications; as laser dye, in an ink for machine readability and / or security applications or for the laser-welding of plastics; or for brand protection or as marker for liquids. The compounds of formula (I) may have a high fluorescence quantum yield, a high molar extinction coefficient, a high solubility and stability in the application medium, good storage stability and / or good detectability even in very small amounts in the correspondingly marked liquids.