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arXiv · 2009.08217

Chromatic interferometry with small frequency differences

Luo-Yuan Qu·Lu-Chuan Liu·Jordan Cotler·Fei Ma·Jian-Yu Guan·Ming-Yang Zheng·Quan Yao·Xiu-Ping Xie·Yu-Ao Chen·Qiang Zhang·Frank Wilczek·Jian-Wei Pan
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Abstract

By developing a `two-crystal' method for color erasure, we can broaden the scope of chromatic interferometry to include optical photons whose frequency difference falls outside of the 400 nm to 4500 nm wavelength range, which is the passband of a PPLN crystal. We demonstrate this possibility experimentally, by observing interference patterns between sources at 1064.4 nm and 1063.6 nm, corresponding to a frequency difference of about 200 GHz.

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Luo-Yuan Qu, Lu-Chuan Liu, Jordan Cotler, Fei Ma, Jian-Yu Guan, Ming-Yang Zheng, Quan Yao, Xiu-Ping Xie, Yu-Ao Chen, Qiang Zhang, Frank Wilczek, Jian-Wei Pan. 2020-09-17. Chromatic interferometry with small frequency differences. https://doi.org/10.1364/oe.402560

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