Unified single-pass model of linewidths in the Hänsch, single- and double-grating grazing-incidence dye lasers

Abstract

A N(2)-pumped dye laser is modeled as a spectrometer. An equivalent entrance/exit slit function is developed and used to calculate the single-pass linewidths for the Hansch, single- and double-grating grazing-incidence dye laser cavities. The results of these detailed calculations are expressed in grating-dependent terms to show the unity of the three solutions and to illustrate performance differences of the three cavities for any particular grating size, groove spacing, and order.