▎ 摘　　要

NOVELTY - The method involves using ultrashort pulse laser resonance to excite molecular vibrations in carbon-containing precursor materials with high energy to break the corresponding chemical bonds. The carbon-containing precursor materials are cracked and recombined to form bonds to prepare graphene quantum materials. The method includes selecting and preparing carbon-containing precursor materials. The graphene is prepared by inducing the cracking of carbon-containing precursor materials by controlling ultra-short pulse laser scanning. The the reduction and conversion of graphene oxide is induced into graphene by controlling laser scanning. The prepared grapheme is puffed by means of microwave heating. The organic polymers include but are not limited to polyimide (PI), polyethylene (PE), polypropylene (PP). USE - Method for preparing graphene quantum material by ultrashort pulse laser-induced cracking used in energy source, environment, semiconductor, biological medicine, aerospace and other fields. ADVANTAGE - The device increases the induced cracking depth, improves the efficiency of preparing graphene quantum material, and the device uses biomass as carbon-containing precursor material, and reduces the material cost. The device realizes the graphene preparation of special functional group structure, directly processes special graphene micro-nano structure. The graphene preparation efficiency is improved, the preparation cost is reduced, and the power condition of laser processing is reduced. The process of inducing and cracking preparing graphene under the lower laser power condition is realized. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a device for preparing graphene quantum material by ultrashort pulse laser-induced cracking. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view illustrating ultrashort pulse laser resonance excitation principle of the method for preparing graphene quantum material by ultrashort pulse laser-induced cracking. (Drawing includes non-English language text)