论文标题
载体 - eNVELOPE稳定，相干合并的ytterbium掺杂纤维CPA提供1 kW的平均功率
Carrier-envelope offset stable, coherently combined ytterbium-doped fiber CPA delivering 1 kW of average power
论文作者
论文摘要
我们提出了一个稳定的载波偏移量（CEO）稳定的Ytterbium掺杂纤维chirped脉冲放大系统，该系统采用了相干束组合的技术，并以80 MHz的脉冲重复速率组合并提供了超过1 kW的平均功率。该系统的CEO稳定性为220 MRAD RMS，其表征在频率偏移范围为10 Hz至20 MHz的频率偏移范围内。高功率放大系统将CEO稳定振荡器的平均功率提高了五个数量级，同时仅将相位噪声增加100 mrad。找不到由于相干束组合引起的CEO噪声恶化的证据。慢性脉冲放大器处的低频首席执行官波动被缓慢的反馈抑制。据我们所知，这是一个相干组合的激光系统的首次演示，该系统可同时提供出色的平均功率和高CEO稳定性。
We present a carrier-envelope offset (CEO) stable ytterbium-doped fiber chirped-pulse amplification system employing the technology of coherent beam combining and delivering more than 1 kW of average power at a pulse repetition rate of 80 MHz. The CEO stability of the system is 220 mrad rms, characterized out-of-loop with an f-to-2f interferometer in a frequency offset range of 10 Hz to 20 MHz. The high-power amplification system boosts the average power of the CEO stable oscillator by five orders of magnitude while increasing the phase noise by only 100 mrad. No evidence of CEO noise deterioration due to coherent beam combining is found. Low-frequency CEO fluctuations at the chirped-pulse amplifier are suppressed by a slow loop feedback. To the best of our knowledge, this is the first demonstration of a coherently combined laser system delivering an outstanding average power and high CEO stability at the same time.
