Wallenstein R, Hänsch T W
Appl Opt. 1974 Jul 1;13(7):1625-8. doi: 10.1364/AO.13.001625.
Construction details and operating characteristics are given for a narrowband pulsed dye laser system, pumped by a nitrogen laser, that offers very linear reproducible frequency tuning over continuous ranges of 150 GHz and more, at a bandwidth down to 25 MHz. A diffraction grating in Littrow configuration, a tilted Fabry-Perot interferometer inside the cavity, and an optical external confocal filter interferometer are the wavelength-selective elements. Simultaneous scanning of these elements is accomplished without mechanically moving parts by changing the gas pressure in an enclosing chamber.
本文给出了一种由氮激光器泵浦的窄带脉冲染料激光系统的结构细节和工作特性。该系统在高达150GHz及以上的连续频率范围内提供非常线性且可重复的频率调谐，带宽低至25MHz。采用利特罗结构的衍射光栅、腔内倾斜的法布里-珀罗干涉仪以及光学外腔共焦滤波器干涉仪作为波长选择元件。通过改变封闭腔内的气压，无需机械移动部件即可实现这些元件的同步扫描。
