Search Results - "Hansch, Theodor W."

A phase-stable dual-comb interferometer by Chen, Zaijun, Yan, Ming, Hänsch, Theodor W., Picqué, Nathalie

“…Laser frequency combs emit a spectrum with hundreds of thousands of evenly spaced phase-coherent narrow lines. A comb-enabled instrument, the dual-comb…”
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Adaptive real-time dual-comb spectroscopy by Ideguchi, Takuro, Poisson, Antonin, Guelachvili, Guy, Picqué, Nathalie, Hänsch, Theodor W.

“…The spectrum of a laser frequency comb consists of several hundred thousand equally spaced lines over a broad spectral bandwidth. Such frequency combs have…”
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Dual-comb hyperspectral digital holography by Vicentini, Edoardo, Wang, Zhenhai, Van Gasse, Kasper, Hänsch, Theodor W., Picqué, Nathalie

“…Holography 1 has always held special appeal as it is able to record and display spatial information in three dimensions 2 – 10 . Here we show how to augment…”
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Coherent Raman spectro-imaging with laser frequency combs by Ideguchi, Takuro, Holzner, Simon, Bernhardt, Birgitta, Guelachvili, Guy, Picqué, Nathalie, Hänsch, Theodor W.

“…A new multiplex technique of coherent anti-Stokes Raman spectro-imaging with two laser frequency combs is shown to record molecular spectra of broad bandwidth…”
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Atom-chip-based generation of entanglement for quantum metrology by Riedel, Max F., Böhi, Pascal, Li, Yun, Hänsch, Theodor W., Sinatra, Alice, Treutlein, Philipp

“…Quantum measurement in a tangle Atom interferometers, which rely on the wave properties of particles, are used in a variety of ultra-high-precision…”
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Laser Frequency Combs for Astronomical Observations by Steinmetz, Tilo, Wilken, Tobias, Araujo-Hauck, Constanza, Holzwarth, Ronald, Hänsch, Theodor W, Pasquini, Luca, Manescau, Antonio, D'Odorico, Sandro, Murphy, Michael T, Kentischer, Thomas, Schmidt, Wolfgang, Udem, Thomas

“…A direct measurement of the universe's expansion history could be made by observing in real time the evolution of the cosmological redshift of distant objects…”
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Cavity-enhanced Raman microscopy of individual carbon nanotubes by Hümmer, Thomas, Noe, Jonathan, Hofmann, Matthias S., Hänsch, Theodor W., Högele, Alexander, Hunger, David

“…Raman spectroscopy reveals chemically specific information and provides label-free insight into the molecular world. However, the signals are intrinsically…”
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A spectrograph for exoplanet observations calibrated at the centimetre-per-second level by Wilken, Tobias, Curto, Gaspare Lo, Probst, Rafael A., Steinmetz, Tilo, Manescau, Antonio, Pasquini, Luca, González Hernández, Jonay I., Rebolo, Rafael, Hänsch, Theodor W., Udem, Thomas, Holzwarth, Ronald

“…Calibration of an astronomical spectrograph using a laser frequency comb yields a short-term Doppler shift repeatability of 2.5 cm s −1 , which is sufficient…”
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Quantum phase transition from a superfluid to a Mott insulator in a gas of ultracold atoms by Bloch, Immanuel, Greiner, Markus, Mandel, Olaf, Esslinger, Tilman, Hänsch, Theodor W

“…For a system at a temperature of absolute zero, all thermal fluctuations are frozen out, while quantum fluctuations prevail. These microscopic quantum…”
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Controlled collisions for multi-particle entanglement of optically trapped atoms by Bloch, Immanuel, Mandel, Olaf, Greiner, Markus, Widera, Artur, Rom, Tim, Hänsch, Theodor W

“…Entanglement lies at the heart of quantum mechanics, and in recent years has been identified as an essential resource for quantum information processing and…”
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Doppler Cooling Trapped Ions with a UV Frequency Comb by Davila-Rodriguez, Josue, Ozawa, Akira, Hänsch, Theodor W, Udem, Thomas

“…We demonstrate Doppler cooling of trapped magnesium ions using a frequency comb at 280 nm obtained from a frequency tripled Ti:sapphire laser. A comb line…”
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Transverse-mode coupling and diffraction loss in tunable Fabry-Pérot microcavities by Benedikter, Julia, Hümmer, Thomas, Mader, Matthias, Schlederer, Benedikt, Reichel, Jakob, Hänsch, Theodor W, Hunger, David

“…We report on measurements and modeling of the mode structure of tunable Fabry-Pérot optical microcavities with imperfect mirrors. We find that non-spherical…”
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Test of time dilation using stored Li+ ions as clocks at relativistic speed by Botermann, Benjamin, Bing, Dennis, Geppert, Christopher, Gwinner, Gerald, Hänsch, Theodor W, Huber, Gerhard, Karpuk, Sergei, Krieger, Andreas, Kühl, Thomas, Nörtershäuser, Wilfried, Novotny, Christian, Reinhardt, Sascha, Sánchez, Rodolfo, Schwalm, Dirk, Stöhlker, Thomas, Wolf, Andreas, Saathoff, Guido

“…We present the concluding result from an Ives-Stilwell-type time dilation experiment using 7Li+ ions confined at a velocity of β=v/c=0.338 in the storage ring…”
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A frequency comb in the extreme ultraviolet by Gohle, Christoph, Udem, Thomas, Rauschenberger, Jens, Schuessler, Hans A, Hänsch, Theodor W, Krausz, Ferenc, Holzwarth, Ronald, Herrmann, Maximilian

“…Since 1998, the interaction of precision spectroscopy and ultrafast laser science has led to several notable accomplishments. Femtosecond laser optical…”
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Few-cycle, broadband, mid-infrared optical parametric oscillator pumped by a 20-fs Ti:sapphire laser by Chaitanya Kumar, Suddapalli, Esteban-Martin, Adolfo, Ideguchi, Takuro, Yan, Ming, Holzner, Simon, Hänsch, Theodor W., Picqué, Nathalie, Ebrahim-Zadeh, Majid

“…A few‐cycle, broadband, singly‐resonant optical parametric oscillator (OPO) for the mid‐infrared based on MgO‐doped periodically‐poled LiNbO3 (MgO:PPLN),…”
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Polariton hyperspectral imaging of two-dimensional semiconductor crystals by Gebhardt, Christian, Förg, Michael, Yamaguchi, Hisato, Bilgin, Ismail, Mohite, Aditya D., Gies, Christopher, Florian, Matthias, Hartmann, Malte, Hänsch, Theodor W., Högele, Alexander, Hunger, David

“…Atomically thin crystals of transition metal dichalcogenides (TMDs) host excitons with strong binding energies and sizable light-matter interactions. Coupled…”
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Characterization of a 450 km baseline GPS carrier-phase link using an optical fiber link by Droste, Stefan, Grebing, Christian, Leute, Julia, Raupach, Sebastian M F, Matveev, Arthur, Hänsch, Theodor W, Bauch, Andreas, Holzwarth, Ronald, Grosche, Gesine

“…A global positioning system (GPS) carrier-phase frequency transfer link along a baseline of 450 km has been established and is characterized by comparing it to…”
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Test of relativistic time dilation with fast optical atomic clocks at different velocities by Gwinner, Gerald, Reinhardt, Sascha, Saathoff, Guido, Buhr, Henrik, Carlson, Lars A, Wolf, Andreas, Schwalm, Dirk, Karpuk, Sergei, Novotny, Christian, Huber, Gerhard, Zimmermann, Marcus, Holzwarth, Ronald, Udem, Thomas, Hänsch, Theodor W

“…Time dilation is one of the most fascinating aspects of special relativity as it abolishes the notion of absolute time. It was first observed experimentally by…”
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Precision spectroscopy of the 2S-4P transition in atomic hydrogen on a cryogenic beam of optically excited 2S atoms by Beyer, Axel, Alnis, Janis, Khabarova, Ksenia, Matveev, Arthur, Parthey, Christian G., Yost, Dylan C., Pohl, Randolf, Udem, Thomas, Hänsch, Theodor W., Kolachevsky, Nikolai

“…Precision spectroscopy of the 2S − 4P1/2 and 2S − 4P3/2 transitions in atomic hydrogen is performed with a reproducibility of a few parts in 1012. A cryogenic…”
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The Rydberg constant and proton size from atomic hydrogen by Beyer, Axel, Maisenbacher, Lothar, Matveev, Arthur, Pohl, Randolf, Khabarova, Ksenia, Grinin, Alexey, Lamour, Tobias, Yost, Dylan C., Hänsch, Theodor W., Kolachevsky, Nikolai, Udem, Thomas

“…At the core of the “proton radius puzzle” is a four–standard deviation discrepancy between the proton root-mean-square charge radii (r p) determined from the…”
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