A new approach to lasers that promises optical emission with a spectral linewidth of just 1 mHz could lead to even more accurate and stable atomic clocks.
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References
Meiser, D., Ye, J., Carlson, D. R. & Holland, M. J. Phys. Rev. Lett. 102, 163601 (2009).
Hosaka, K. et al. Phys. Rev. A 79, 033403 (2009).
Young, B. C., Cruz, F. C., Itano, W. M. & Bergquist, J. C. Phys. Rev. Lett. 82, 3799–3802 (1999).
Numata, K., Kemery, A. & Camp, J. Phys. Rev. Lett. 93, 250602 (2004).
Goldenberg, H. M., Kleppner, D. & Ramsey, N. F. Phys. Rev. Lett. 5, 361–365 (1960).
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Sterr, U., Lisdat, C. A sharper laser. Nature Phys 5, 382–383 (2009). https://doi.org/10.1038/nphys1296
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DOI: https://doi.org/10.1038/nphys1296
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