Gademann Georg, Plé Fabien, Paul Pierre-Mary, Vrakking Marc J J
FOM-AMOLF, Science Park , Amsterdam, The Netherlands.
Opt Express. 2011 Dec 5;19(25):24922-32. doi: 10.1364/OE.19.024922.
We demonstrate the first carrier-envelope phase (CEP)-stabilized chirped pulse amplification system with pulse peak-powers in the terawatt regime. The system, which eventually is intended to be used in the generation of isolated attosecond pulses, consists of two consecutive multipass amplification stages. The first amplification stage is a commercial CEP-stable kHz system including a single 13-pass amplifier reaching a pulse energy of 2.3 mJ. Pulses are picked after the first stage at a repetition rate of 50 Hz and are further amplified in a 5-pass power-amplifier to pulse energies that reach up to 80 mJ before compression. After compression the pulse energy is 35mJ at a pulse duration of 32 fs, signifying a peak power of 1.1 terawatt. Peak-powers exceeding 1.5 TW should easily be achievable by improving the efficiency of the grating compressor. The CEP-stability of the terawatt system is demonstrated by single shot measurements of the residual CEP jitter at the full repetition rate and show an excellent root-mean-square value of 315 mrad.
我们展示了首个载波包络相位（CEP）稳定的啁啾脉冲放大系统，其脉冲峰值功率处于太瓦量级。该系统最终旨在用于产生孤立阿秒脉冲，由两个连续的多程放大阶段组成。第一放大阶段是一个商用CEP稳定的千赫兹系统，包括一个单级13程放大器，可达到2.3 mJ的脉冲能量。在第一阶段之后，以50 Hz的重复频率选取脉冲，并在一个5程功率放大器中进一步放大，在压缩之前脉冲能量可达80 mJ。压缩后，脉冲能量为35 mJ，脉冲持续时间为32 fs，峰值功率为1.1太瓦。通过提高光栅压缩器的效率，超过1.5 TW的峰值功率应该很容易实现。通过在全重复频率下对残余CEP抖动进行单次测量，证明了太瓦系统的CEP稳定性，其均方根值为315 mrad，表现出色。
