本文提出了一般双45°LNQ开关平一平谐振腔激光器及激光放大器存在的问题;论述了为解决此问题采用直块KD·P调Q、正交棱镜谐振腔激光器的光路原理、优点以及研制该器件中解决的技术问题;介绍了该器件达到的技术指标.实验结果表明;该器件满足了电视激光组合系统对激光器的要求,可以代替该系统中现采用的激光放大器 In this paper, the problems existing in the common double 45 ° LNQ switching flatten-cavity laser and the laser amplifier are presented. The optical principle, advantages and development of the straight prism KD-Q and orthogonal prism resonator laser to solve this problem are discussed The technical problem solved by the device is introduced and the technical indexes reached by the device are introduced.The experimental results show that the device meets the requirement of the laser system of the television laser combination system and can replace the laser amplifier