Mode-locked operation of a master oscillator power amplifier
Mode-locked operation of a master oscillator power amplifier
复制标题
主振荡器功率放大器的锁模操作
DOI：
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发表时间：
1994
影响因子：
2.6
通讯作者：
D. Welch
中科院分区：
文献类型：
--
作者：
A. Mar;R. Helkey;J. Bowers;D. Mehuys;D. Welch
报道了锥形放大器MOPA首次锁模工作，产生了具有创纪录的高平均功率和脉冲能量的短光脉冲。MOPA由一个工作在940 mm波长的分立半导体振荡器和放大器构成。产生了平均功率为296 mW、峰值功率为28.1W、脉宽为4.2ps的脉冲。这些脉冲的能量为118pJ，对应于比锁模激光器自身的增益饱和能量大一个数量级的能量，也对应于放大器内部超过增益饱和能量的能量。尽管放大器饱和能量限制了锁模激光器中可获得的脉冲能量，但MOPA配置表明，在后放大级中产生能量超过放大器饱和能量的脉冲是可行的。
We report the first mode-locked operation of a tapered amplifier MOPA to generate short optical pulses with record high average powers and pulse energies. The MOPA is constructed using a discrete semiconductor oscillator and amplifier operating at 940 mm wavelength. Pulses of 4.2 ps duration are generated with average powers of 296 mW and peak powers of 28.1 W. The energy of these pulses was 118 pJ, corresponding to energies more than an order magnitude greater than the gain saturation energy in the mode-locked laser itself, and also corresponds to energies internal in the amplifier in excess of the gain saturation energy. Although the amplifier saturation energy limits the pulse energy obtainable in a mode-locked laser, the MOPA configuration demonstrates that generation of pulses with energies in excess of the amplifier saturation energy is feasible in a post-amplification stage.<<ETX>>