基于级联迈克尔逊干涉仪的飞秒级宽频带混沌光双光子超聚束效应

Sheng Luo, Yu Zhou, Huaibin Zheng, Jianbin Liu, Hui Chen, Yuchen He, Wanting Xu, Shuanghao Zhang, Fuli Li, Zhuo Xu
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引用次数: 4

摘要

本文提出并演示了一种基于级联迈克尔逊干涉仪(CMI)的宽带静止混沌光的二阶相干度为2.42的超聚束效应的方法,该方法超过了混沌光双光子聚束效应的理论上限2。用超快双光子吸收探测器测量了超聚束相关峰,半峰全宽达到约95 fs。建立了双光子超束理论来解释这一效应,并与实验结果相一致。该理论还预测,如果混沌光在CMI中传播N次,二阶相干度可以大大大于2美元。最后,提出了一种利用宽带混沌光循环的CMI微弱信号检测装置。理论上,混沌光在CMI中循环100次后,对微弱信号的检测灵敏度可提高79倍。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Two-photon superbunching effect of broadband chaotic light at the femtosecond timescale based on a cascaded Michelson interferometer
It is challenging for observing superbunching effect with true chaotic light, here we propose and demonstrate a method to achieve superbunching effect of the degree of second-order coherence is 2.42 with broadband stationary chaotic light based on a cascaded Michelson interferometer (CMI), exceeding the theoretical upper limit of 2 for the two-photon bunching effect of chaotic light. The superbunching correlation peak is measured with an ultrafast two-photon absorption detector which the full width at half maximum reaches about 95 fs. Two-photon superbunching theory in a CMI is developed to interpret the effect and is in agreement with experimental results. The theory also predicts that the degree of second-order coherence can be much greater than $2$ if chaotic light propagates $N$ times in a CMI. Finally, a new type of weak signals detection setup which employs broadband chaotic light circulating in a CMI is proposed. Theoretically, it can increase the detection sensitivity of weak signals 79 times after the chaotic light circulating 100 times in the CMI.
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