Short pulse generation in a visible diode laser by resonant excitation of a sustained oscillation

A stable 400-MHz train of 670-nm, 100-ps pulses occurs when a gain-guided InGaP-InGaAlP diode laser is modulated in synchronicity with its sustained oscillation. Experimentally, the pulse width decreases and the peak power increases as the RF power increases. At high RF powers, the average output power of the laser shows dips or resonances around those frequencies where short pulses occur.<
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