5 results about "Organic laser" patented technology

The invention discloses a circular polarization organic laser material and a preparation method and application thereof, and the preparation method of the circular polarization organic laser material comprises the following steps: taking chiral amine, rare earth chloride and hydrochloric acid as raw materials, placing the raw materials in a solvent, and heating for reaction to obtain a precursor solution; after drying the precursor solution, dissolving again to obtain a transparent solution; and putting the open container filled with the transparent solution into a closed container filled with an anti-solvent, and growing the zero-dimensional perovskite structure luminescent material A4BX7 single crystal by utilizing the diffusion of the anti-solvent. The chiral ligand is introduced into the hybrid perovskite, a chiral environment is successfully introduced into an inorganic perovskite system, chiral transfer is realized, and the prepared circular polarization organic laser material has good circular polarization organic laser properties and high fluorescence quantum yield.

The invention discloses an organic photonic crystal microcavity laser, and belongs to the field of active photonic devices and organic lasers, a light-emitting layer of the laser is prepared from an organic material, and a periodic photonic crystal structure is constructed on a functional layer of the laser. The construction method of the photonic crystal structure comprises the following steps: etching a functional layer of the laser to form the photonic crystal structure with periodic holes; or, the middle area of the functional layer of the laser is reserved and not etched, the periodic holes are etched in the functional layer without the middle area, and the formed photonic crystal structure is a defect type microcavity structure with the middle area not etched. The laser is of an electric pump type or an optical pump type, and an electric pump type light-emitting layer is made of Alq3 or DCM. And the material of the optical pump type light emitting layer is a mixture of PMMA (polymethyl methacrylate) and PM-597 or t-Bu-RhB. The structures can form an in-plane resonant cavity with a high Q value, a high limiting factor of a light field in a light emitting area and a photonic crystal area is realized, and the performance of the laser is improved.

This invention discloses a boron-oxygen-doped π-extended uracil, with the following general structural formula: where R1, R2, R3, and R4 are independent substituted or unsubstituted groups, including alkyl and aryl groups; Ar 1 The groups represent different types of aryl groups. This invention synthesizes a class of boron-oxygen-doped π-extended uracils and explores their photoelectric properties, providing more solutions for obtaining more efficient organic optoelectronic materials. This invention employs an improved synthesis method that makes the reactants inexpensive and readily available, avoids the use of toxic reagents, and is simple and easy to perform. The compounds have wide applications in organic light-emitting diodes, organic solar cells, organic field-effect transistors, organic lasers, organic sensors, molecular switches, and pharmaceutical intermediates.

This invention relates to the field of organic photonics and laser device technology, specifically disclosing a laser based on a mesoporous titanium dioxide substrate and its fabrication method. The laser comprises a transparent substrate, a mesoporous titanium dioxide thin film on the substrate, and an organic conjugated polymer gain medium layer on the titanium dioxide thin film. The mesoporous titanium dioxide layer is fabricated by spraying or spin coating, utilizing its disordered porous structure to provide light scattering feedback. Low-threshold random laser emission can be achieved under optical pumping without the need for a traditional precision resonant cavity. This device features a simple structure, low fabrication cost, good process compatibility, and applicability to polymer gain media with various emission wavelengths, providing a new technical path for realizing low-cost, easily integrated electrically pumped organic lasers.

The present invention provides a highly efficient organic laser element 1 in which optical absorption loss and optical leakage in the waveguide are reduced. [Solution] The device comprises a light incident surface (first surface Sf1) into which light is incident, a light exit surface (second surface Sf2) intersecting the light incident surface, and a groove-shaped waveguide (trench waveguide 8) formed across the light incident surface and the light exit surface. The waveguide is provided with a DFB grid 4 having repeatedly formed protrusions 5 and grooves 6, each of which extends in a direction intersecting the light incident surface, and furthermore, the protrusions 5 and grooves 6 intersect in the direction in which the waveguide extends toward the light exit surface.