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arXiv · 2505.04901

Enhanced resolution chirped-pulse interferometry

Madeleine Bérubé·Michael D. Mazurek·Kevin J. Resch
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Abstract

Chirped-pulse interferometry (CPI) is a classical low-coherence interferometry technique with automatic dispersion cancellation and improved resolution over white-light interference. Previous work has shown that CPI with linearly-chirped Gaussian laser pulses achieves a $\sqrt{2}$ improvement in resolution over conventional white-light interferometry, but this is less than the factor of 2 improvement exhibited by a comparable quantum technique. In this work, we show how a particular class of nonlinearly-chirped laser pulses can meet, and even exceed, the factor of 2 improvement resolution. This enhanced resolution CPI removes the remaining advantage of quantum interferometers in dispersion-cancelled interferometry.

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Madeleine Bérubé, Michael D. Mazurek, Kevin J. Resch. 2025-05-08. Enhanced resolution chirped-pulse interferometry. https://arxiv.org/abs/2505.04901

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