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.
R. Wallenstein and T. W. Hänsch, "Linear Pressure Tuning of a Multielement Dye Laser Spectrometer," Appl. Opt. 13, 1625-1628 (1974)