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arXiv · 1604.06726

Shot noise reduced terahertz detection via spectrally post-filtered electro-optic sampling

Michael Porer·Jean-Michel Ménard·Rupert Huber
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Abstract

In ultrabroadband terahertz electro-optic sampling, spectral filtering of the gate pulse can strongly reduce the quantum noise while the signal level is only weakly affected. The concept is tested for phase-matched electro-optic detection of field transients centered at 45 THz with 12-fs near-infrared gate pulses in AgGaS2. Our new approach increases the experimental signal-to-noise ratio by a factor of 3 compared to standard electro-optic sampling. Under certain conditions an improvement factor larger than 5 is predicted by our theoretical analysis.

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Michael Porer, Jean-Michel Ménard, Rupert Huber. 2016-04-22. Shot noise reduced terahertz detection via spectrally post-filtered electro-optic sampling. https://doi.org/10.1364/ol.39.002435

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