Heidt A M, Price J H V, Baskiotis C, Feehan J S, Li Z, Alam S U, Richardson D J
Opt Express. 2013 Oct 7;21(20):24281-7. doi: 10.1364/OE.21.024281.
We present the first demonstration of mid-IR supercontinuum generation directly pumped with picosecond pulses from a Thulium fiber-amplified gain-switched laser diode at 2 µm. We achieve more than two octaves of bandwidth from 750 - 4000 nm in step-index ZBLAN fiber with Watt-level average power and spectral flatness of less than 1.5 dB over a 1300 nm range in the mid-IR from 2450 - 3750 nm. The system offers high stability, power-scaling capability to the 10 W regime, and demonstrates an attractive route towards relatively inexpensive, versatile and practical sources of high power broadband mid-IR radiation.
我们首次展示了直接由2微米的铥光纤放大增益开关激光二极管产生的皮秒脉冲直接泵浦的中红外超连续谱。我们在阶跃折射率ZBLAN光纤中实现了750 - 4000纳米超过两个倍频程的带宽，平均功率达到瓦级，并且在2450 - 3750纳米的中红外1300纳米范围内光谱平坦度小于1.5分贝。该系统具有高稳定性、功率扩展至10瓦量级的能力，并展示了一条通向相对廉价、通用且实用的高功率宽带中红外辐射源的诱人途径。
