As much as 47 µW of cw infrared radiation and 89 µW of pulsed infrared radiation, tunable near 4.3 µm, have been generated by mixing the outputs of a high-power tapered semiconductor amplifier at 858 nm (signal wave) and a Ti:Al2O3 laser at 715 nm (pump wave) in AgGaS2. The GaAlAs tapered traveling-wave amplifier delivered as much as 1.5 W of diffraction-limited cw power into the nonlinear crystal. Output powers, conversion efficiencies, and spectral characteristics of this novel midinfrared source are discussed.
© 1993 Optical Society of America
Ulrich Simon, Frank K. Tittel, and Lew Goldberg, "Difference-frequency mixing in AgGaS2 by use of a high-power GaAlAs tapered semiconductor amplifier at 860 nm," Opt. Lett. 18, 1931-1933 (1993)