Deshazer L G, Maunders E A
Aerospace Group, Hughes Aircraft Company, Culver City, California 90230, USA.
Appl Opt. 1967 Mar 1;6(3):431-5. doi: 10.1364/AO.6.000431.
Internal reflection prisms were used to produce a narrow angular range of high reflectivity within a laser cavity. The selectivity was obtained from the sharp angular variation of internal reflectivity near the critical angle. Angular mode selection of a Nd: glass normal laser was achieved by this critical internal reflection (CIR) technique. Two-dimensional angular mode selection was observed with two orthogonal Lummer-Gehrcke plates within the laser cavity.
内反射棱镜用于在激光腔内产生一个窄角范围的高反射率。这种选择性是由临界角附近内反射率的急剧角变化获得的。通过这种临界内反射（CIR）技术实现了钕玻璃普通激光器的角模选择。在激光腔内使用两块正交的卢默-盖尔克板实现了二维角模选择。
