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Optical heterodyne detection in cavity ring-down spectroscopy |
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| Authors: | M. D. Levenson B. A. Paldus T. G. Spence C. C. Harb J. S. Harris Jr. R. N. Zare |
| Abstract: | Polarization-selective optical heterodyne detection is shown to enhance the practical sensitivity of cavity ring-down spectroscopy. Initial experiments demonstrate a signal-to-noise ratio above 31 dB. Minor improvements should yield shot-noise-limited operation. |
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