Continuous-wave visible diode-pumped dye laser

Abstract

We describe experimental results of cw laser operation using a red (670 nm) laser diode pumping two near-infrared dyes (Rd-800 and Rd-700). Red diode lasers operating with 300 mW cw power were characterized, paying particular attention to beam quality. Collimating optics and a highly astigmatic focusing system were designed and demonstrated, producing an approximately 50 micrometers diameter focal spot, resulting in over 15 kW/cm² pump intensity (per diode). The resulting diode/optical system was used to pump a commercial Coherent Model 599 cw dye laser utilizing a flowing dye jet.