Abstract

The frequency of an acousto-optic mode-locker is detuned from the fundamental resonance c/2 L of the cavity resulting in undamped oscillations of the laser pulse energy. The envelope of the mode-locked pulse train consists of spikes 2 μs wide with a repetition time of a 40 μs. The energy of the mode-locked pulses in a spike is increased up to a factor of 20 compared to a CW-mode-locked pulse. The pulse width can be as short as 200 ps.

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