Polymer cholesteric liquid crystal laser and production method thereof, and optical equipment

Abstract

The invention discloses a polymer cholesteric liquid crystal laser and a production method thereof, and optical equipment. The polymer cholesteric liquid crystal laser comprises a laser main body, and the laser main body comprises a light-transmitting conductive substrate, a polymer cholesteric liquid crystal layer, a precious metal reflecting layer and a resonant cavity unit. A parallel orientation layer is arranged on the light-transmitting conductive substrate; the polymer cholesteric liquid crystal layer is arranged on the surface of the parallel orientation layer; the precious metal reflecting layer and the polymer cholesteric liquid crystal layer are oppositely arranged at an interval; the resonant cavity unit is clamped between the precious metal reflecting layer and the polymer cholesteric liquid crystal layer; and the resonant cavity unit is filled with planar optical waveguides, the planar optical waveguides comprise perovskite quantum dot layers and transparent separation layers, and the transparent separation layers are arranged on the two surfaces, facing the polymer cholesteric liquid crystal layer and the precious metal reflection layer, of the perovskite quantum dot layers respectively. Through the structural design, the polymer cholesteric liquid crystal laser is low in laser threshold, high in radiation intensity and good in repeatability.

Description

technical field

[0001] The invention relates to the technical field of lasers, in particular to a polymer cholesteric liquid crystal laser, a preparation method and an optical device. Background technique

[0002] A laser usually consists of three parts: a pump source, a resonant cavity and a gain medium. The gain medium is generally a luminescent dye or a semiconductor luminescent material. The pump source is used as an external energy source to cause the gain medium to generate particle population inversion, and the resonant cavity selects light with a certain frequency and wavelength for gain amplification. When the gain of the generated light is greater than the loss Threshold, the laser can produce laser emission. At present, the most commonly used lasers are semiconductor lasers, but semiconductor lasers have poor temperature characteristics, output light is easy to diverge, and are prone to noise, so they are not suitable for use in some occasions. In contrast, chol...

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