Search Results - "T. Legero"

A sub-40-mHz-linewidth laser based on a silicon single-crystal optical cavity by Kessler, T., Hagemann, C., Grebing, C., Legero, T., Sterr, U., Riehle, F., Martin, M. J., Chen, L., Ye, J.

“…State-of-the-art laser frequency stabilization by high-finesse optical cavities is limited fundamentally by thermal noise-induced cavity length fluctuations…”
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1.5  μm Lasers with Sub-10 mHz Linewidth by Matei, D G, Legero, T, Häfner, S, Grebing, C, Weyrich, R, Zhang, W, Sonderhouse, L, Robinson, J M, Ye, J, Riehle, F, Sterr, U

“…We report on two ultrastable lasers each stabilized to independent silicon Fabry-Pérot cavities operated at 124 K. The fractional frequency instability of each…”
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A clock network for geodesy and fundamental science by Lisdat, C., Grosche, G., Quintin, N., Shi, C., Raupach, S.M.F., Grebing, C., Nicolodi, D., Stefani, F., Al-Masoudi, A., Dörscher, S., Häfner, S., Robyr, J.-L., Chiodo, N., Bilicki, S., Bookjans, E., Koczwara, A., Koke, S., Kuhl, A., Wiotte, F., Meynadier, F., Camisard, E., Abgrall, M., Lours, M., Legero, T., Schnatz, H., Sterr, U., Denker, H., Chardonnet, C., Le Coq, Y., Santarelli, G., Amy-Klein, A., Le Targat, R., Lodewyck, J., Lopez, O, Pottie, P.-E.

“…Leveraging the unrivalled performance of optical clocks as key tools for geo-science, for astronomy and for fundamental physics beyond the standard model…”
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Ultrastable Silicon Cavity in a Continuously Operating Closed-Cycle Cryostat at 4 K by Zhang, W, Robinson, J M, Sonderhouse, L, Oelker, E, Benko, C, Hall, J L, Legero, T, Matei, D G, Riehle, F, Sterr, U, Ye, J

“…We report on a laser locked to a silicon cavity operating continuously at 4 K with 1×10^{-16} instability and a median linewidth of 17 mHz at 1542 nm. This is…”
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Search for transient variations of the fine structure constant and dark matter using fiber-linked optical atomic clocks by Roberts, B M, Delva, P, Al-Masoudi, A, Amy-Klein, A, Bærentsen, C, Baynham, C F A, Benkler, E, Bilicki, S, Bize, S, Bowden, W, Calvert, J, Cambier, V, Cantin, E, Curtis, E A, Dörscher, S, Favier, M, Frank, F, Gill, P, Godun, R M, Grosche, G, Guo, C, Hees, A, Hill, I R, Hobson, R, Huntemann, N, Kronjäger, J, Koke, S, Kuhl, A, Lange, R, Legero, T, Lipphardt, B, Lisdat, C, Lodewyck, J, Lopez, O, Margolis, H S, Álvarez-Martínez, H, Meynadier, F, Ozimek, F, Peik, E, Pottie, P-E, Quintin, N, Sanner, C, De Sarlo, L, Schioppo, M, Schwarz, R, Silva, A, Sterr, U, Tamm, Chr, Le Targat, R, Tuckey, P, Vallet, G, Waterholter, T, Xu, D, Wolf, P

“…We search for transient variations of the fine structure constant using data from a European network of fiber-linked optical atomic clocks. By searching for…”
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Substrate-transferred GaAs/AlGaAs crystalline coatings for gravitational-wave detectors by Cole, G. D., Ballmer, S. W., Billingsley, G., Cataño-Lopez, S. B., Fejer, M., Fritschel, P., Gretarsson, A. M., Harry, G. M., Kedar, D., Legero, T., Makarem, C., Penn, S. D., Reitze, D. H., Steinlechner, J., Sterr, U., Tanioka, S., Truong, G.-W., Ye, J., Yu, J.

“…In this Perspective, we summarize the status of technological development for large-area and low-noise substrate-transferred GaAs/AlGaAs (AlGaAs) crystalline…”
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Comparing ultrastable lasers at 7 × 10−17 fractional frequency instability through a 2220 km optical fibre network by Schioppo, M., Kronjäger, J., Silva, A., Ilieva, R., Paterson, J. W., Baynham, C. F. A., Bowden, W., Hill, I. R., Hobson, R., Vianello, A., Dovale-Álvarez, M., Williams, R. A., Marra, G., Margolis, H. S., Amy-Klein, A., Lopez, O., Cantin, E., Álvarez-Martínez, H., Le Targat, R., Pottie, P. E., Quintin, N., Legero, T., Häfner, S., Sterr, U., Schwarz, R., Dörscher, S., Lisdat, C., Koke, S., Kuhl, A., Waterholter, T., Benkler, E., Grosche, G.

“…Ultrastable lasers are essential tools in optical frequency metrology enabling unprecedented measurement precision that impacts on fields such as atomic…”
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Time-resolved two-photon quantum interference by LEGERO, T, WILK, T, KUHN, A, REMPE, G

“…The interference of two independent single-photon pulses impinging on a beam splitter is analysed in a generalised time-resolved manner. Different aspects of…”
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Demonstration of a transportable 1 Hz-linewidth laser by Vogt, S., Lisdat, C., Legero, T., Sterr, U., Ernsting, I., Nevsky, A., Schiller, S.

“…We present the setup and test of a transportable clock laser at 698 nm for a strontium lattice clock. A master-slave diode laser system is stabilized to a…”
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Vacuum-stimulated raman scattering based on adiabatic passage in a high-finesse optical cavity by Hennrich, M, Legero, T, Kuhn, A, Rempe, G

“…We report on the first observation of stimulated Raman scattering from a Lambda-type three-level atom, where the stimulation is realized by the vacuum field of…”
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Demonstration of 4.8 × 10−17 stability at 1 s for two independent optical clocks by Oelker, E., Hutson, R. B., Kennedy, C. J., Sonderhouse, L., Bothwell, T., Goban, A., Kedar, D., Sanner, C., Robinson, J. M., Marti, G. E., Matei, D. G., Legero, T., Giunta, M., Holzwarth, R., Riehle, F., Sterr, U., Ye, J.

“…Optical atomic clocks require local oscillators with exceptional optical coherence owing to the challenge of performing spectroscopy on their…”
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Phase-coherent comparison of two optical frequency standards over 146 km using a telecommunication fiber link by Terra, O., Grosche, G., Predehl, K., Holzwarth, R., Legero, T., Sterr, U., Lipphardt, B., Schnatz, H.

“…We have explored the performance of two “dark fibers” of a commercial telecommunication fiber link for a remote comparison of optical clocks. The two fibers,…”
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Long-distance remote comparison of ultrastable optical frequencies with 10(-15) instability in fractions of a second by Pape, A, Terra, O, Friebe, J, Riedmann, M, Wübbena, T, Rasel, E M, Predehl, K, Legero, T, Lipphardt, B, Schnatz, H, Grosche, G

“…We demonstrate a fully optical, long-distance remote comparison of independent ultrastable optical frequencies reaching a short term stability that is superior…”
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Interrogation Laser for a Strontium Lattice Clock by Legero, T., Lisdat, C., Vellore Winfred, J.S.R., Schnatz, H., Grosche, G., Riehle, F., Sterr, U.

“…We report on the setup and characterization of a 698-nm master-slave diode laser system to probe the 1 S 0 - 3 P 0 clock transition of strontium atoms confined…”
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Subhertz-linewidth infrared frequency source with a long-term instability below 5 × 10−15 by Raupach, S. M. F., Legero, T., Grebing, C., Hagemann, Ch, Kessler, T., Koczwara, A., Lipphardt, B., Misera, M., Schnatz, H., Grosche, G., Sterr, U.

“…Distributing a stable, absolute optical reference frequency via fiber network would serve research and development in academia and industry. Lasers stabilized…”
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Photon statistics of a non-stationary periodically driven single-photon source by Hennrich, M, Legero, T, Kuhn, A, Rempe, G

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Optical cryogenic silicon resonators by Legero, T., Matei, D. G., Weyrich, R., Riehle, F., Sterr, U., Zhang, W., Sonderhouse, L., Robinson, J. M., Ye, J.

“…The tremendous progress with optical atomic clocks asks for super-stable lasers to interrogate the best clock transitions with only a few mHz line width…”
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Development of a Sub-Kelvin Silicon Cavity by Barbarat, J., Gillot, J., Millo, J., Lacroute, C., Giordano, V., Kersale, Y., Legero, T.

“…We report a pathfinder to address the current limitations of ultrastable lasers based on optical Fabry-Perot cavities, aiming to set the ground for the next…”
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Novel Noise Contributions in Crystalline Mirror Coatings by Yu, J., Legero, T., Riehle, F., Ma, C. Y., Herbers, S., Nicolodi, D., Kedar, D., Oelker, E., Ye, J., Sterr, U.

“…SummaryWe discovered and characterized a novel birefringent noise in Al 0.92 Ga 0.08 As/GaAs crystalline mirror coatings at cryogenic temperature. We also…”
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A Simple Frequency Stabilization Technique for Averaging Birefringent Noise in Crystalline Mirror Coatings by Yu, J., Legero, T., Riehle, F., Ma, C. Y., Herbers, S., Nicolodi, D., Kedar, D., Oelker, E., Ye, J., Sterr, U.

“…SummaryWe present a technique to stabilize laser frequency to an average of different cavity modes via Pound-Drever-Hall (PDH) scheme. This technique was…”
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