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Nd3+ Doped Fiber Laser With Integrated Acousto-Optic Mode-Locking

We describe the construction and operation of an FM mode-locked fiber laser using a large-diameter Nd3+ doped silica fiber with dielectric reflectors deposited directly onto the fiber ends and an integrated ZnO acousto-optic phase modulator clamped to the fiber. Optical pulses of less than 60 ps duration have been generated at 432.77 MHz with 400 mW of power to the transducer, and 300-400 ps pulses have been observed with only 4011,W of modulator power, correspond-ing to less than 130 wad of phase modulation.