M ichelson interferometer is widely applicable in modern physics and modern metrology as precision optical instrument . O bserve equal thickness .In this paper ,we want to introduce the application in evanescent field ,elasto optical coefficient ,thickness of thin film of holographic plate ,and so on .%在近代物理学和近代计量科学中，迈克尔孙干涉仪作为一种精密光学仪器，得到了广泛应用。本文主要介绍了迈克尔孙干涉仪在测量全息干板厚度、弹光系数、隐失场等方面的应用。
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