“量子电子学”这一名称本身就指明了激光器及其前身是物理学概念和电气工程学概念的结合。这种极重要的各学科传统间的结合在二次大战中和战后加快了。如大战期间美国物理学家涌向仓促建立的雷达和电子干扰实验室,在那里,他们埋头研究一直属于无线电工程领域组成部分的课题,如信噪比和增益带宽乘积。在战争工作的“暖房”条件下,微波工程领域成熟了。 The name “Quantum Electronics” itself states that the laser and its predecessor are a combination of the concepts of physics and electrical engineering. This extremely important combination of disciplines accelerated in World War II and post-war. For example, during the war, American physicists flocked to the hasty establishment of radars and electronic jamming laboratories, where they devoted themselves to research that has long been a part of the field of radio engineering, such as the product of signal-to-noise ratio and gain bandwidth. Work in the war “heating ” conditions, the field of microwave engineering has matured.