BoxCARS 2D IR spectroscopy with pulse shaping
BoxCARS 2D IR spectroscopy with pulse shaping
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DOI：
10.1364/oe.471984
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发表时间：
2023-01-16
期刊：
影响因子：
3.8
通讯作者：
Baiz, Carlos R.
中科院分区：
文献类型：
--
作者：
Al-Mualem, Ziareena A.;Chen, Xiaobing;Baiz, Carlos R.
BoxCARS和泵浦-探测几何结构是二维红外（2D IR）光谱的常见实现。BoxCARS是无背景的，通常提供更大的信噪比，这使得能够测量微弱的振动回波信号。脉冲整形器已经在泵浦-探测几何结构中实现，以通过精确控制泵浦脉冲延迟和载波相位来加速数据收集并抑制散射和其他不需要的信号。在这里，我们介绍了一个2D-IR光学设置在BoxCARS几何实现脉冲整形器快速采集无背景的2D IR光谱。我们展示了使用这种新的快速扫描BoxCARS设置与相同配置中的泵浦-探测几何结构相比的信噪比改善。(c)2023 Optica出版集团根据Optica开放获取出版协议的条款
BoxCARS and pump-probe geometries are common implementations of two-dimensional infrared (2D IR) spectroscopy. BoxCARS is background-free, generally offering greater signal-to-noise ratio, which enables measuring weak vibrational echo signals. Pulse shapers have been implemented in the pump-probe geometry to accelerate data collection and suppress scatter and other unwanted signals by precise control of the pump-pulse delay and carrier phase. Here, we introduce a 2D-IR optical setup in the BoxCARS geometry that implements a pulse shaper for rapid acquisition of background-free 2D IR spectra. We show a signal-to-noise improvement using this new fast-scan BoxCARS setup versus the pump-probe geometry within the same configuration. (c) 2023 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement