Zhang X-X, Würth C, Zhao L, Resch-Genger U, Ernsting N P, Sajadi M
Photonics Center, College of Physical Science, Nankai University, Tianjin, China.
Rev Sci Instrum. 2011 Jun;82(6):063108. doi: 10.1063/1.3597674.
A setup for fluorescence upconversion spectroscopy (FLUPS) is described which has 80 fs temporal response (fwhm) for emission in the spectral range 425-750 nm. Broadband phase matching is achieved with tilted gate pulses at 1340 nm. Background from harmonics of the gate pulse is removed and sensitivity increased compared to previous designs. Photometric calibration of the upconversion process is performed with a set of fluorescent dyes. For Coumarin 153 in methanol the peak position, bandwidth, and asymmetry depending on delay time are reported.
描述了一种用于荧光上转换光谱（FLUPS）的装置，其在425 - 750 nm光谱范围内发射的时间响应为80 fs（半高宽）。通过1340 nm的倾斜门脉冲实现宽带相位匹配。与先前的设计相比，消除了门脉冲谐波的背景并提高了灵敏度。使用一组荧光染料对上转换过程进行光度校准。报告了甲醇中香豆素153的峰值位置、带宽和不对称性随延迟时间的变化情况。
