随机时间laser散斑用于亚微秒光致发光衰减的稳健测量
Random temporal laser speckles for robust measurement of sub-microsecond photoluminescence decay
摘要：
时间分辨光致发光（PL）通常用于跟踪各种材料的动态。因此，寻求简化的PL动力学的获取吸引了持续的关注。本文提出了一种新的方法来测量PL衰减，这是基于随机波动的激发强度。随机激励波形是利用激光散斑在旋转漫射器上产生的随机激励波形来实现的。因此，所提出的技术能够利用任何相干激发源，而不需要产生短脉冲或可控地调制光。PL衰减可以从PL迹线的傅立叶图像计算重建。本文演示了该方法的性能，这是能够获得亚微秒的动态脉冲响应函数达到300 ns。重建的PL衰减进行了比较，条纹相机测量，以验证该方法。最后，潜在的限制和应用的技术进行了讨论。
英文摘要：
Time-resolved photoluminescence (PL) is commonly used to track dynamics in a broad range of materials. Thus, the search for simplification of the acquisition of PL kinetics attracts continuous attention. This paper presents a new robust and straightforward approach to the measurement of PL decay, which is based on randomly fluctuating excitation intensity. The random excitation waveform is attained by using laser speckles generated on a rotating diffuser. Owing to this, the presented technique is able to utilize any coherent excitation source without the necessity to generate short pulses or to controllably modulate the light. PL decay can be computationally reconstructed from the Fourier image of the PL trace. The paper demonstrates the performance of the method, which is able to acquire sub-microsecond dynamics as the impulse response function reaches 300 ns. The reconstructed PL decays were compared to streak camera measurements to verify the method. Finally, potential limitations and applications of the technique are discussed.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
