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自激光器发明以后15年来,人们运用各种介质和激励方法观测了激光器的振荡情况,研究了Q开关、锁模、波长转换、光混合等其它有关技术,并使之逐渐得到广泛应用。就短波长区域的激光器而言,从原有的可见光到红外的激光,利用晶体倍频的方法或者将2个波长进行光混合,就能比较简单地得到2000A～＊以上的紫外光。但是在短波长区域内,堪称高效率、高功率输出的激光器,例如能适应激光核聚变要求的激光器单靠过去的激光介质和频率技术无论如何是不能满足要求的,因而开辟了研制“新型激光器”这一新的领域。
Since the laser was invented 15 years ago, people use a variety of media and excitation method to observe the oscillation of the laser, Q switch, mode-locked, wavelength conversion, light mixing and other related technologies, and make it gradually widely used. For lasers in the short wavelength region, ultraviolet rays of 2000 A * or higher can be relatively easily obtained from the conventional visible light to the infrared laser by the method of crystal frequency doubling or the light mixing of two wavelengths. However, in the short wavelength region, lasers called high efficiency and high power output, such as lasers that can meet the requirements of laser fusion, can not meet the requirements any time by using the laser medium and frequency technology in the past. Thus, a new type of laser Laser "this new area.