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激光的出现对大多数实际应用系统中的光学元件的性能、质量及其加工提出了严格的要求。激光的高功率性能由3个不同的过程决定:其一是对入射光辐射的吸收(主要由各种吸收机制决定);其二是由热学性能决定的温度升高和响应;其三是元件的热光学和热机械响应,如变形、应力断裂等。在设计效率高、紧凑性好、可靠性好的应用于不同领域的高功率激光系统时,需要考虑不同运行条件下的脉冲、连续波、不同占空比的重复频率或突发模式等。
The advent of lasers places stringent requirements on the performance, quality, and processing of optical components in most practical applications. The high power performance of a laser is determined by three different processes: one is the absorption of incident light radiation (mainly by various absorption mechanisms); the other is the temperature rise and response, which is governed by the thermal properties; the third is the component Thermal and thermal mechanical response, such as deformation, stress fracture. In the design of high efficiency, compact and reliable high-power laser system applied to different fields, it is necessary to consider the pulse, continuous wave and repetition rate of different duty cycle or burst mode under different operating conditions.