Rate-equation theory and experimental research on dual-wavelength operation of a Ti : sapphire laser

Rate-equation analysis and experiments on a pulsed dual-wavelength Ti:sapph ire laser are reported in the paper. A four-energy-level system with two lo wer-energy levels is put forward and numerical calculations are given. A si mple optical setup with two sub-resonators is constructed, which yields a t otal energy from dual-wavelength lasers up to 41.8 mJ. The largest tunable range is over 110 nm. Laser characteristics of dual-wavelength pulses are o bserved. Experimental results are in accord with rate-equation-theory resul ts.