整形散斑：超快脉冲通过多重散射介质的时空聚焦
Shaping speckles: spatio-temporal focussing of an ultrafast pulse through a multiply scattering medium
摘要：
相干光的多次散射是一个既有基础又有应用价值的问题。在光学中，相位共轭允许通过多重散射介质进行空间聚焦和成像;然而，时间控制仍然是难以捉摸的，多重散射仍然是飞秒科学的挑战。在这里，我们报告的空间和时间分辨测量产生的散斑场的超快光脉冲通过厚的强散射介质的传播。使用光谱脉冲整形，我们展示了空间局部化的输出散斑的傅立叶极限持续时间的时间再压缩，提供了一个光学模拟的声学制度中的时间反转实验。这种方法表明，多重散射介质可以在飞秒尺度上用于光操纵，并且具有多种潜在应用，包括量子控制，生物成像和光子学。
英文摘要：
The multiple scattering of coherent light is a problem of both fundamental and applied importance. In optics, phase conjugation allows spatial focussing and imaging through a multiply scattering medium; however, temporal control is nonetheless elusive, and multiple scattering remains a challenge for femtosecond science. Here, we report on the spatially and temporally resolved measurement of a speckle field produced by the propagation of an ultrafast optical pulse through a thick strongly scattering medium. Using spectral pulse shaping, we demonstrate the spatially localized temporal recompression of the output speckle to the Fourier-limit duration, offering an optical analogue to time-reversal experiments in the acoustic regime. This approach shows that a multiply scattering medium can be put to profit for light manipulation at the femtosecond scale, and has a diverse range of potential applications that includes quantum control, biological imaging and photonics.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
