Heuermann Tobias, Wang Ziyao, Lenski Mathias, Gebhardt Martin, Gaida Christian, Abdelaal Mahmoud, Buldt Joachim, Müller Michael, Klenke Arno, Limpert Jens
Opt Lett. 2022 Jun 15;47(12):3095-3098. doi: 10.1364/OL.459385.
High-energy, ultrafast, short-wavelength infrared laser sources with high average power are important tools for industrial and scientific applications. Through the coherent combination of four ultrafast thulium-doped rod-type fiber amplifiers, we demonstrate a Tm-doped chirped pulse amplification system with a compressed pulse energy of 1.65 mJ and 167 W of average output power at a repetition rate of 101 kHz. The system delivers 85 fs pulses with a peak power of 15 GW. Additionally, the system presents a high long- and short-term stability. To the best of our knowledge, this is the highest average output power short wavelength IR, mJ-class source to date. This result shows the potential of coherent beam combining techniques in the short wavelength infrared spectral region for the power scalability of these systems.
高平均功率的高能、超快、短波长红外激光源是工业和科学应用的重要工具。通过四个超快掺铥棒状光纤放大器的相干组合，我们展示了一种掺铥啁啾脉冲放大系统，其压缩脉冲能量为1.65 mJ，平均输出功率为167 W，重复频率为101 kHz。该系统产生85 fs脉冲，峰值功率为15 GW。此外，该系统具有很高的长期和短期稳定性。据我们所知，这是迄今为止平均输出功率最高的短波长红外、mJ级光源。这一结果表明了相干光束合成技术在短波长红外光谱区域对这些系统功率可扩展性的潜力。
