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首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Decay-Associated Fourier Spectroscopy: Visible to Shortwave Infrared Time-Resolved Photoluminescence Spectra
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Decay-Associated Fourier Spectroscopy: Visible to Shortwave Infrared Time-Resolved Photoluminescence Spectra

机译：衰减相关的傅立叶光谱：可见短波红外时间分辨光致发光光谱

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摘要

We describe and implement an interferometric approach to decay-associated photoluminescence spectroscopy, which we term decay-associated Fourier spectroscopy (DAFS). In DAFS, the emitted photon stream from a substrate passes through a variable path length Mach-Zehnder interferometer prior to detection and timing. The interferometer encodes spectral information in the intensity measured at each detector enabling simultaneous spectral and temporal resolution. We detail several advantages of DAFS, including wavelength-range insensitivity, drift-noise cancellation, and optical mode retention. DAFS allows us to direct the photon stream into an optical fiber, enabling the implementation of superconducting nanowire single photon detectors for energy-resolved spectroscopy in the shortwave infrared spectral window (lambda = 1-2 mu m). We demonstrate the broad applicability of DAFS, in both the visible and shortwave infrared, using two Forster resonance energy transfer pairs: a pair operating with conventional visible wavelengths and a pair showing concurrent acquisition in the visible and the shortwave infrared regime.
机译：我们描述并实施了干涉相关的光致发光光谱的干涉方法，我们术语衰减相关的傅里​​叶光谱（DAF）。在DAF中，在检测和定时之前，来自基板的发射光子流通过可变路径长度Mach-Zehnder干涉仪。干涉仪在每个检测器中测量的强度中的频谱信息，从而实现同时频谱和时间分辨率。我们详细介绍了DAF的几个优点，包括波长范围内不敏感，漂移噪声消除和光学模式保持。 DAFS允许我们将光子流引导到光纤中，使得能够在短波红外光谱窗口（Lambda =1-2μm）中用于能量分辨光谱的超导纳米线单光子探测器。我们展示了DAF的广泛适用性，在可见和短波红外，使用两个福尔斯特共振能量转移对：与传统的可见波长的一对，并且在可见的可见和短波红外方案中显示并发采集。

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