cw OPERATION OF AN ORGANIC DYE SOLUTION LASER

A cw laser using a 2.5×10−4 M solution of rhodamine 6G in water containing a deaggregating agent (1.5% Triton-X100) is described. The laser consists of a 4.5-mm transverse-flow hemispherical cavity excited longitudinally by the 5145-Å output of a 1-W argon ion laser. With mirror reflectances of 97.5% and 99.5%, a 200-mW threshold excitation was measured. Power output was approximately 30 mW at 597 nm with 960 mW excitation power.