Optical Setup (IMAGE)

Optica

Optical Setup

Caption

Researchers developed a new optical cavity that improves the sensitivity of terahertz spectroscopy. It allows molecules under analysis interact with the terahertz frequencies over an effective distance of approximately 1 kilometer inside a resonator only 50 centimeters long. As the waves bounce around, they can be absorbed by molecules many times, allowing a very sensitive measurement.

Credit

Francis Hindle, Université du Littoral-Côte d'Opale

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