Tunable self-phase-stabilized infrared laser pulses have been generated from a two-stage optical parametric amplifier. With an 800nm pump source, the output idler pulses are tunable from 1.3 μm to 2.3μm, and the maximum output energy of the idler pulses is higher than lmJ at 1.6μm by using 6mJ pump laser. A carrier-envelope phase fluctuation of ~0.15 rad (rms) for the idler pulses is measured for longer than one hour by using a home build f-to-2f interferometer.
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