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首页> 外文期刊>Laser physics letters >Widely tunable 70-MHz near-infrared source of ultrashort pulses based on a mode-locked ytterbium laser and a photonic-crystal fiber
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Widely tunable 70-MHz near-infrared source of ultrashort pulses based on a mode-locked ytterbium laser and a photonic-crystal fiber

机译:基于锁模激光器和光子晶体光纤的可调谐的70MHz超短脉冲近红外源

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摘要

Soliton self-frequency shift in a highly nonlinear photonic-crystal fiber is shown to enable an efficient wavelength conversion of 100-fs 70-MHz output of a solid-state ytterbium laser, allowing the generation of sub-100-fs laser pulses with a central wavelength tunable from 1060 to 1400 nm. In the single-soliton regime, laser pulses are efficiently converted into isolated wavelength-tunable bands, with a photon-number conversion efficiency of 82% achieved for ytterbium-laser pulses converted to a spectral band at 1125 nm supporting 35-fs transform-limited pulses. For high input powers, the ytterbium-laser pulses are coupled to multiple solitons inside the fiber, enabling efficient super-continuum generation through involved soliton dynamics.
机译:示出了高度非线性的光子晶体光纤中的孤子自频移能够实现固态100激光器的100-fs 70-MHz输出的有效波长转换,从而产生具有100nm的亚100fs激光脉冲。中心波长可在1060至1400 nm之间调节。在单孤子状态下,激光脉冲有效地转换为隔离的波长可调带,对于for激光脉冲而言,其光子数转换效率达到82%,转换为1125 nm的光谱带,支持35-fs转换限制脉冲。对于高输入功率,the激光脉冲耦合到光纤内部的多个孤子,从而通过涉及的孤子动力学实现高效的超连续谱生成。

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