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高能固体激光器激光棒中过剩热量的建立由于会引起诸如热透镜之类效应往往对激光运转有害。因此，对激光器设计人员来说，热操纵是关键设计问题。解决这个问题的一个途径是用复合材料，即使用由非掺杂晶体和掺杂晶体粘合组成的激光棒，该设计使棒端面与产生热量的激活区分离，
The build-up of excess heat in high-energy solid-state laser bars is often detrimental to laser operation due to the effects that can cause problems such as thermal lenses. Therefore, thermal design is a key design issue for laser designers. One solution to this problem is to use a composite material that uses a laser rod composed of an undoped and a doped crystal that separates the rod end from the heat-generating activation region,