ORGANIC DYE SOLUTION LASER

TLDR

Liquid lasers using purely organic dye solutions exhibit tunable wavelengths across their fluorescence bands and are characterized by their operation and properties. A giant‑pulse ruby laser pumps dye solutions in various organic solvents at concentrations from 10⁻³ to 10⁻⁶ mol L⁻¹, with the solutions held in plane‑parallel cuvettes that act as laser cavities. Wavelengths from 730 to 870 nm, megawatt peak powers, and 5 mrad beam divergence were observed.

Abstract

The operation and characteristics of liquid lasers with a purely organic medium are described. A giant-pulse ruby laser is used to pump solutions of organic dyes in various organic solvents in concentrations ranging from 10−3 to 10−6 moles/liter. The solutions are contained in plane-parallel cuvettes acting as laser cavities. Wavelengths from 730 to 870 nm, megawatt peak powers and beam divergence angles of 5 mrad have been observed. The laser wavelength of each dye is tunable over a great part of its fluorescence band, e.g. by a change in concentration.