Linnenbank Heiko, Steinle Tobias, Giessen Harald
Opt Express. 2016 Aug 22;24(17):19558-66. doi: 10.1364/OE.24.019558.
We demonstrate narrowband cw injection seeding of a femtosecond double-pass optical parametric generator at 43 MHz repetition rate with a simple, low power external cavity diode laser. Up to 2.5 W of near-IR radiation (1.5 - 1.66 µm) as well as 800 mW of tunable mid-IR radiation (2.75 - 3.15 µm) with pulse durations below 300 fs are generated with a remarkable pulse-to-pulse and long term power stability. Compared to conventional, vacuum noise seeded optical parametric generators, the presented frequency conversion scheme does not only exhibit superior gain and noise dynamics, but also a high degree of flexibility upon control parameters such as pump power, seed power, or spectral position of the seed.
我们展示了使用简单、低功率的外腔二极管激光器，以43MHz的重复频率对飞秒双通光学参量发生器进行窄带连续波注入种子光。产生了高达2.5W的近红外辐射（1.5 - 1.66μm）以及800mW的可调谐中红外辐射（2.75 - 3.15μm），脉冲持续时间低于300fs，具有显著的脉冲间和长期功率稳定性。与传统的真空噪声注入种子光的光学参量发生器相比，所提出的频率转换方案不仅表现出卓越的增益和噪声动态特性，而且在诸如泵浦功率、种子光功率或种子光的光谱位置等控制参数方面具有高度的灵活性。
