Murari Krishna, Cankaya Huseyin, Kroetz Peter, Cirmi Giovanni, Li Peng, Ruehl Axel, Hartl Ingmar, Kärtner Franz X
Opt Lett. 2016 Mar 15;41(6):1114-7. doi: 10.1364/OL.41.001114.
We demonstrate intracavity gain shaping inside a 2 μm Ho:YLF regenerative amplifier with a spectral bandwidth of 2.9 nm broadened to 5.4 nm, corresponding to Fourier-limited pulses of 1 ps duration. The intracavity gain shaping is achieved by using a simple etalon, which acts as a frequency-selective filter. The output of the regenerative amplifier is amplified by a single-pass amplifier, and we achieve total energy of 2.2 mJ and pulse duration of 2.4 ps at 1 kHz with pulse fluctuations <1%. The amplifier chain is seeded by a home-built mode-locked holmium-doped fiber oscillator.
我们展示了在一个2μm Ho:YLF再生放大器内的腔内增益整形，其光谱带宽从2.9nm拓宽至5.4nm，对应于持续时间为1ps的傅里叶极限脉冲。腔内增益整形通过使用一个简单的标准具来实现，该标准具充当频率选择滤波器。再生放大器的输出由一个单程放大器放大，我们在1kHz时实现了2.2mJ的总能量和2.4ps的脉冲持续时间，脉冲波动<1%。放大器链由一个自制的锁模掺钬光纤振荡器注入种子光。
