▎ 摘　　要

NOVELTY - The utility model graphene a passive adjustable pulse laser experiment device, comprising a test tube, the test tube is symmetrically equipped with a supporting frame, one end of the test tube is equipped with a collimating focusing lens, the collimating focusing lens is connected with the pumping source through the optical fibre, the other end of the test tube is equipped with an oscilloscope, the inner part of the test tube located at one side of the collimating focusing lens is provided with an input mirror, the inner part of the test tube located at one side of the oscilloscope is provided with an output mirror, the test tube is located between the input mirror and the output mirror is provided with a chute, the inner part of the chute is slidingly connected with a mirror frame, the top part centre of the glasses frame is equipped with a pull handle, the glasses frame is clamped and fixed with a graphene film crystal. The graphene film crystal of the utility model is clamped on the glasses frame, the glasses frame is sliding in the sliding groove of the test tube, it is convenient to install and disassemble, it is convenient for testing the different types of graphene film crystal.