Continuous-Wave Dye Lasers
Continuous-Wave Dye Lasers
复制标题
连续波染料激光器
DOI：
10.1007/978-3-662-11579-4_2
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发表时间：
1973
影响因子：
2.8
通讯作者：
B. Snavely
中科院分区：
文献类型：
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作者：
B. Snavely
连续波(CW)染料激光器的运行基于与脉冲激光器相同的分子态。然而，一些在脉冲激光器中相对不重要的损耗机制往往主导着连续波激光器的性能。例如，三重态分子的积累在决定连续激光的效率方面起着主要作用，而在脉冲激光器中，三重态相对来说并不重要。此外，由于激发引起的加热在激活介质中产生的光学不均匀性必须被小心地控制，以使激光器连续工作。脉冲激光的激发源通常能够产生远远超过达到激光阈值所需的强度。另一方面，连续波激光器的泵浦源通常是边缘的。出于这些原因，连续波染料激光器的有效运行需要仔细的设计和构造，以最大限度地减少无关的光学损耗。机械和光学公差通常比脉冲染料激光器的公差严重得多。在这一章中，我们将考虑连续波染料激光器的分析和设计。将讨论调谐系统，并回顾一些实验连续波激光系统的特点。
The operation of the continuous-wave (cw) dye laser is based upon the same molecular states as that of pulsed lasers. However, some loss mechanisms that are relatively unimportant in the pulsed laser tend to dominate the performance of the cw laser. For example, the accumulation of molecules in the triplet state plays a major role in determining the efficiency of the cw laser, whereas the triplet state is relatively unimportant in pulsed lasers. Also, optical inhomogeneities produced in the active medium by heating resulting from excitation must be carefully controlled for the laser to operate continuously. Excitation sources for pulsed lasers are generally capable of producing intensities greatly in excess of that required to reach laser threshold. Pump sources for cw lasers, on the other hand, are often marginal. For these reasons, the efficient operation of a cw dye laser requires careful design and construction to minimize extraneous optical losses. The mechanical and optical tolerances are generally much more severe than those for pulsed dye lasers. In this chapter the analysis and design of cw dye lasers will be considered. Tuning systems will be discussed and the characteristics of some experimental cw laser systems reviewed.