Tunable Fiber Laser Materials

对于可调谐的紧凑、重量轻、高效的激光系统有着重要的需求。 为了使这些激光系统达到所需的输出功率、效率、光束质量、可靠性以及小尺寸和重量，它们必须是固态光纤系统。 用于泵浦这些激光系统的最有效的源是二极管激光器，其中50%的效率现在是可能的。 此外，为了有效地将来自激光二极管的泵浦光耦合到激光器中并且有效地提取激光器输出功率和任何产生的热，需要光纤激光器系统。 LaserGenics公司在我们的第一阶段工作中，通过激光加热外延生长技术生长了钛掺杂的A1203、YA103和MgA1204的光纤。 这些材料是非常有吸引力的可调谐激光源从近红外到近紫外。 在第二阶段的努力中，我们将进一步优化MgAl2O4光纤的生长，为我们生长的三种类型的单晶光纤开发包层材料和技术，使用这些光纤构建可调谐光纤激光器试验板系统，并使用这些光纤测试该系统并报告这些结果。 ***

9409239 Schlecht There is an important need for compact, lightweight, efficient laser systems that are tunable. In order for these laser systems to achieve the output powers, efficiency, beam quality, reliability, and the small size and weight required, they must be solid state fiber systems. The most efficient source for pumping these laser systems is the diode laser where 50% efficiencies are now possible. Further, in order to efficiently couple the pump light from laser diodes into the laser and to efficiently extract both the laser output power and any heat generated, a fiber laser system is demanded. LaserGenics Corporation has grown fibers of titanium doped A1203, YA103, and MgA1204 by the laser heated pedestal-growth technique during our Phase I effort. These materials are very attractive as tunable laser sources from the near IR to the near UV. During the Phase II effort we will further optimize the growth of MgA1204 fibers, develop cladding materials and techniques for the three types of single crystal fibers we have grown, construct a tunable fiber laser breadboard system using these fibers and test this system with these fibers and report these results. ***