Energy Scaling of Infrared Femtosecond Pulses by Dual-Chirped Optical Parametric Amplification
Energy Scaling of Infrared Femtosecond Pulses by Dual-Chirped Optical Parametric Amplification
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DOI：
10.1109/jphot.2017.2704096
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发表时间：
2017-05
影响因子：
2.4
通讯作者：
Yuxi Fu;E. Takahashi;K. Midorikawa
中科院分区：
文献类型：
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作者：
Yuxi Fu;E. Takahashi;K. Midorikawa
利用双啁啾光参量放大（DC-OPA）对飞秒红外脉冲进行了能量定标实验。在红外波段获得了总能量超过100 mJ、脉宽36 fs的超快光参量放大器，这是目前超快光参量放大器的最高能量输出。我们还讨论了基于直流光放大器的啁啾脉冲和闲频脉冲差频产生15-30 THz的高能量脉冲。在DC-OPA系统中，通过对种子脉冲相位的控制，可以间接地对THz脉冲的光谱相位进行精确控制，这对THz脉冲的压缩是非常有帮助的。
We present an energy-scaling experiment on a femtosecond infrared pulse using dual-chirped optical parametric amplification (DC-OPA). A total output energy exceeding 100 mJ with 36-fs pulse duration was achieved in the infrared region, which is the highest energy ever reported for an ultrafast optical parametric amplifier scheme. We also discuss the generation of high-energy 15–30–THz pulses through difference frequency generation between chirped signal and idler pulses based on DC-OPA. By manipulating the phase of a seed pulse in the DC-OPA system, the spectral phase of a THz pulse can be indirectly controlled precisely, which is very helpful for compressing THz pulses.