A kind of preparation method of perovskite micro-laser

Abstract

The invention relates to a method for preparing a perovskite micro-laser, which uses a rod-shaped or flake-shaped perovskite material with the advantages of high carrier mobility, long diffusion length, large absorption coefficient, and high quantum yield. As the gain medium of the laser, the semiconductor laser array is used as the excitation light source to pump the perovskite material. The excitation light source makes the perovskite material produce stable spontaneous emission amplification (ASE), and finally achieves the laser output of the target wavelength. The method proposed by the present invention utilizes the advantages that perovskite materials can convert 70% of the absorbed light into emitted light, realizes a laser device with low threshold, high conversion efficiency, and a working wavelength tuning range that can cover near-infrared to visible light, and solves the current problem. There are problems in the technology such as low conversion efficiency of solid-state lasers, serious temperature gain ratio, and difficulty in realizing laser devices in different bands.

Description

technical field [0001] The invention belongs to the field of lasers, and more specifically relates to a perovskite micro-laser and a preparation method of the perovskite micro-laser. Background technique [0002] In recent years, research on solid-state lasers, especially high-power solid-state lasers and diode-pumped solid-state lasers, and their applications has developed rapidly. It is widely used in industrial laser material processing, laser medicine, laser chemistry and national defense and military. Solid-state lasers have the advantages of large output energy, high peak power, easy fiber coupling, and mature unit technology. At the same time, there are also shortcomings and deficiencies in the solid-state lasers realized in the existing technology: the temperature effect is relatively serious, and the heat generation is large. It is precisely because of the large output energy and high peak power that the thermal effect is very obvious, so the solid-state laser has ...

AI Technical Summary

Problems solved by technology

The preparation method of this perovskite micro-laser proposed by the present invention utilizes the rod-shaped or sheet-shaped perovskite material as the gain medium, and the semiconductor laser array as the excitation light source, and the rod-shaped or sheet-shaped perovskite material has a 70% The advantages of converting absorbed light into emitted light, pumping this rod-shaped or sheet-shaped perovskite material laser with a semiconductor laser array can achieve low threshold, high conversion efficiency, and the operating wavelength tuning range can cover near-infrared to visible light. , to solve the problems of low conversion efficiency of solid-state lasers, serious temperature gain ratio, and difficulty in realizing different band laser devices in the prior art

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