Femtosecond high-sensitivity, chirp-free transient absorption spectroscopy using kilohertz lasers
Femtosecond high-sensitivity, chirp-free transient absorption spectroscopy using kilohertz lasers
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DOI：
10.1364/ol.23.000277
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发表时间：
1998-02-15
期刊：
影响因子：
3.6
通讯作者：
McBranch, DW
中科院分区：
文献类型：
--
作者：
Klimov, VI;McBranch, DW
本文介绍了一种高灵敏度、无啁啾测量白光连续谱探测器整个带宽范围内飞秒(FS)瞬时吸收的简单方法。这项技术使用相敏检测，通过光谱扫描和同时调整泵浦和探测脉冲之间的时间延迟；它允许在所有时间尺度上直接测量不受啁啾影响的光谱，仅受飞秒源的分辨率限制。应用该方法研究了RR共轭低聚物和半导体纳米晶的超快驰豫动力学。(C)1998年美国光学学会。
A simple method is demonstrated for high-sensitivity, chirp-free measurements of femtosecond (fs) transient absorption over the entire bandwidth of a white-light continuum probe. This technique uses phase-sensitive detection, with spectral scanning and simultaneous adjustment of the time delay between pump and probe pulses; it permits a direct measurement of spectra undistorted by chirp at all time scales, limited only by the resolution of the fs source. The method is applied to study the ultrafast relaxation dynamics of rr-conjugated oligomers and semiconductor nanocrystals. (C) 1998 Optical Society of America.