Compact high gain double-pass optical parametric chirped pulse amplifier
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A novel double-pass noncollinear optical parametric chirped pulse amplifier based on an Yb3+-doped passively mode-locked fiber laser has been demonstrated in this paper. The signal was double-pass amplified in a single nonlinear crystal by a long pump pulse, and the signal and pump pulses of each pass were completely phase matched in the plane of the maximum effective nonlinearity. Net saturated gain of 2×106 was achieved and the superfluorescence was suppressed by increasing the overlap time between the signal and pump pulses.
PACS.42.65.Yj Optical parametric oscillators and amplifiers 42.65.Re Ultrafast processes; optical pulse generation and pulse compression
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