用于激光目标指示器中的激光器,需要有很严格的要求,尤其是机载使用条件下,不仅对激光束的质量,如束散角、选膜性能、光束畸变、热光点平滑等有严格的要求,而且要有高度机械稳定性.以往所用的平行平面腔、显然无法达到以上要求.泊罗棱镜谐振腔却具有明显的优势、不仅具有高度机械稳定性,而且光束质量也较好. There are strict requirements for the laser used in the laser target indicator. Especially under the conditions of airborne use, there are not only the quality of the laser beam, such as the beam divergence angle, the film selection performance, the beam distortion, the thermal spot smoothing, etc. Strict requirements, but also have a high degree of mechanical stability .Planar cavity used in the past, obviously can not meet the above requirements.Porro prism resonator has obvious advantages, not only has a high degree of mechanical stability, but also the beam quality is better.