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Amplifier enhances ring-down spectroscopy

Stewart, G. and Hitz, Breck (2004) Amplifier enhances ring-down spectroscopy. Photonics Spectra, 38 (5). pp. 124-125. ISSN 0731-1230

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Abstract

In recent years, investigators have adapted the principles of ringdown spectroscopy (see sidebar, facing page) to fiber optic configurations by placing high reflectors on each end of a fiber and observing the ringdown time of an injected pulse. But a major drawback is the difficulty of creating a low-loss, high-Q resonator in an optical fiber.