Pulsed dye laser with grating and etalon in a symmetric arrangement

Further improvements have been made to the grazing-incidence pulsed dye laser. Criteria have been established for inserting the intracavity etalon and for selecting the optimal blazed grating and its orders at grazing incidence. A new design is presented in which the grating and the etalon are arranged symmetrically. Single-mode operation and an output linewidth of the order of a few hundred megahertz (below 0.006 A) have been obtained.