Measurement of femtosecond pulses in the focal point of a high-numerical-aperture lens by two-photon absorption.
Measurement of femtosecond pulses in the focal point of a high-numerical-aperture lens by two-photon absorption.
复制标题
通过双光子吸收测量高数值孔径透镜焦点处的飞秒脉冲。
DOI：
10.1364/ol.20.001038
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发表时间：
1995
期刊：
影响因子：
3.6
通讯作者：
G. Brakenhoff
中科院分区：
文献类型：
--
作者：
Michiel Müller;J. Squier;G. Brakenhoff
我们演示了一种方法，用于测量飞秒光脉冲的焦点的高NA透镜，通过双光子吸收干涉自相关。一个无啁啾的47 fs的输入脉冲被发现后，由一个良好的补偿物镜聚焦展宽了约50%。通过适当的预啁啾补偿，这种透镜系统的焦点中的实际脉冲宽度可以恢复到（几乎）其初始值。所提出的双光子自相关技术的独特价值在于其测量高NA透镜的焦点处的实际脉冲宽度的能力，这是例如对双光子成像方法具有直接重要性的方面。
We demonstrate a method for the measurement of femtosecond optical pulses in the focal point of a high-NA lens, using interferometric autocorrelation through two-photon absorption. A chirp-free input pulse of 47 fs is found to broaden by ≈50% after focusing by a well-compensated objective. With proper prechirp compensation, the actual pulse width in the focus of such a lens system can be restored to (almost) its initial value. The unique value of the presented two-photon autocorrelation technique is its capability of measuring the actual pulse width at the focal point of a high-NA lens, an aspect that is of direct importance to two-photon imaging approaches, for example.
影响因子：
56.9
作者：
DENK, W;STRICKLER, JH;WEBB, WW
通讯作者：
WEBB, WW