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4.31
AG Längeneinheit
Informationsbroschüre der PTB: Die SI-Basiseinheiten, Definition, Entwicklung und Realisierung
J. Helmcke: Länge – die SI-Basiseinheit "Meter" , PTB-Mitteilungen 113 (2003) 3-18 (Link: PTB-Mitteilungen 1/2003)
T. J. Quinn: "Practical Realization of the Definition the Metre, including Recommended Radiations of other Optical Frequency Standards", Metrologia, 40, 103-133 (2003)
H. Schnatz, B. Lipphardt, J. Helmcke, F. Riehle, G. Zinner: "First Phase-Coherent Frequency Measurement of Visible Radiation", Phys. Rev. Lett. 76 (1996) 18-21
4.31
AG Längeneinheit
Höchststabile Laser für die Längenmessung: Laserwellenlängennormale
A. Yu. Nevsky, R. Holzwarth, M. Zimmermann, Th. Udem, T. W. Hänsch, J. von Zanthier, H. Walther, P. V. Pokasov, M. N. Skvortsov, S. N. Bagayev, H. Schnatz, F. Riehle: "Frequency comparison of I2 stabilized lasers at 532 nm and absolute frequency measurement of I2 absorption lines", in Frequency Standards and Metrology, Proceedings of the 6th Symposium, ed. P. Gill, World Scientific Publishing, pp. 521-526 (2002)
4.31
AG Längeneinheit
Messung der Frequenz sichtbarer Strahlung
Tamm, Christian; Lipphardt, Burghard; Schnatz, Harald; Wynands, Robert; Weyers, Stefan; Peik, Ekkehard: "171Yb+ single-ion optical frequency standard at 688 THz", in: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control (2007)
Tatiana Nazarova [speaker]; Sterr, Uwe; Riehle, Fritz; Lisdat, Christian; Schnatz, Harald; Lipphardt, Burghard: "Influence of high-frequency laser frequency noise on the stability of an optical clock; TimeNav'07", Geneva International Conference Center, Switzerland, 29 May - 1 June 2007 (2007) European Frequency and Time Forum, Geneva, 29, May - 01, June, 2007
H. Schnatz, B. Lipphardt, C. Degenhardt, E. Peik, T. Schneider, U. Sterr, Chr. Tamm: "Optical frequency measurements using fs-comb generators", IEEE Trans. Instrum. and Meas., 54, 750-753, (2005)
H. Schnatz: "Measurement of Optical Frequencies and Frequency Ratios," Meas. Sci. Technol. 14, 1200-1215 (2003)
4.31
AG Längeneinheit
Kalibrierung und Prüfung von Laserwellenlängennormalen
Erin, M., Karaböce, B., Malinovsky, I., Titov, A., Ugur, H., Darnedde, H., Riehle, F.: "Progress in stabilization of the He-Ne/127I2 wavelength standard at 633 nm and results of an international comparison between the PTB and the UME", Metrologia 32 (1995/96), pp. 301-310
4.31
AG Längeneinheit
Höchststabile Faserlaser für die optische Nachrichtentechnik
G. Grosche, B. Lipphardt, H. Schnatz : Optical frequency synthesis and measurement using fibre-based femtosecond lasers, The European Physical Journal D, 48, pp. 27-33 (2008)
4.31
AG Längeneinheit
Frequenzmessung sichtbarer und nahinfraroter Strahlung
Tamm, Christian; Lipphardt, Burghard; Schnatz, Harald; Wynands, Robert; Weyers, Stefan; Schneider, T.; Peik, Ekkehard: "171Yb+ single-ion optical frequency standard at 688 THz", IEEE Transactions on Instrumentation and Measurement , 56, pp. 601 (2007), 2006 Conference on Precision Electromagnetic Measurements, Torino, 9-14, July, 2006
Phillip Kubina, Peter Adel, Gesine Grosche, Theodor W. Hänsch, Ronald Holzwarth, Burghard Lipphardt, Harald Schnatz: "Continuous Comparison of two Fiber based fs Frequency Combs", Optics Express, 13, 904-909 (2005)
Florian Adler, Konstantinos Moutzouris, and Alfred Leitenstorfer , Harald Schnatz, Burghard Lipphardt, and Gesine Grosche, Florian Tauser: "Phase-locked two-color erbium-doped fiber laser system for long-term precision measurements of visible and near-infrared frequencies", Optics Express 12, 5872, (2004)
Jun Ye, Harald Schnatz, and Leo W. Hollberg: "Optical frequency combs: from frequency metrology to optical phase control", Journal of Selected Topics in Quantum Electronics: Issue on Stabilization of modelocked lasers, JSTQE, 9, No. 4, 1041-1058, (2003)
Jörn Stenger, Harald Schnatz, Christian Tamm, and Harald R. Telle: "Ultraprecise Measurement of Optical Frequency Ratios", Phys. Rev. Lett. 88 (7) 073601-1 (2002)
J. Stenger, Chr. Tamm, N. Haverkamp, S. Weyers, and H. R. Telle: "Absolute frequency measurement of the 435.5-nm 171Yb+-clock transition with a Kerr-lens mode-locked femtosecond laser", Opt. Lett. 26, 1589 (2001)
Schnatz, H., Lipphardt, B., Helmcke, J., Riehle, F., Zinner, G.: "First phase-coherent frequency measurement of visible radiation", Phys. Rev. Lett. 76 (1996), pp. 18-21
4.31
AG Längeneinheit
Entwicklung frequenzstabiler Faserlaser
G. Grosche, B. Lipphardt, H. Schnatz : "Optical frequency synthesis and measurement using fibre-based femtosecond lasers", European Physical Journal, D 48 , pp. 27-33 (2008)
4.31
AG Längeneinheit
Optische Mikrowellensynthese: Erzeugung stabiler Mikrowellenfrequenzen
Lipphardt, Burghard; Grosche, Gesine; Schnatz, Harald: "Phase control of microwave oscillators using an optical clock laser as reference" [poster]; 21st European Frequency and Time Forum, Genf, 29, May - 01, June, 2007
4.31
AG Längeneinheit
Fasergeführte optische Frequenzübertragung
Schnatz, Harald [speaker]; Grosche, Gesine; Lipphardt, Burghard; Nazarova, Tatiana; Peik, Ekkehard; Sterr, Uwe; Tamm, Christian; Santarelli, G.: "Frequency comparisons of optical frequency standards and new results on a long-distance carrier-phase optical fiber link", CLEO/Europe - IQEC 2007: Conference digest (2007); Conference on Lasers and Electro-Optics, International Quantum Electronics Conference, Munich, 17-22, June, 2007
Grosche, Gesine [speaker]; Lipphardt, Burghard; Schnatz, Harald; Santarelli, G.; Lemonde, P.; Bize, S.; Lours, M.; Narbonneau, F.; Clairon, A.; Lopez, O.; Amy-Klein, A.; Chardonnet, Ch.: "Transmission of an optical carrier frequency over a tele-communication fiber link", ohne schriftliche Quelle : no written source (2007) Conference on Lasers and Electro-Optics/International Quantum Electronics, Baltimore, 06-11, May, 2007
H. Schnatz, B. Lipphardt, G. Grosche: "Frequency metrology using fiber-based fs-frequency combs", in Conference on Lasers and Electro-Optics (Optical Society of America, Long Beach, California, 2006), paper CTuH1.
G. Grosche, B. Lipphardt, H. Schnatz : "Optical frequency synthesis and measurement using fibre-based femtosecond lasers", European Physical Journal, D 48 , pp. 27-33 (2008)
4.32
AG Quantenoptik mit kalten Atomen
S. Kraft, F. Vogt, O. Appel, F. Riehle und U. Sterr: „Bose-Einstein condensation of alkaline earth atoms: 40Ca“ Phys. Rev. Lett. 103 130401 (2009)
H. Salami, T. Bergeman, B. Beser, J. Bai, E. H. Ahmed, S. Kotochigova, A. M. Lyyra, J. Huennekens, C. Lisdat, A. V. Stolyarov, O. Dulieu, P. Crozet, and A. J. Ross: „Spectroscopic observations, spin-orbit functions, and coupled-channel deperturbation analysis of data on the A 1Sigmau+ and b 3Piu states of Rb2“ Phys. Rev. A 80 022515 (2009)
Ch. Lisdat, J. S. R. Vellore Winfred, T. Middelmann, F. Riehle, und U. Sterr: „Collisional Losses, Decoherence, and Frequency Shifts in Optical Lattice Clocks with Bosons“ Phys. Rev. Lett. 103 090801 (2009)
G. Grosche, O. Terra, K. Predehl, R. Holzwarth, B. Lipphardt, F. Vogt, U. Sterr und H. Schnatz, „Optical frequency transfer via 146 km fiber link with $10^-19$ relative accuracy“ Opt. Lett. 34 2270-2272 (2009)
T. Nazarova, Ch. Lisdat, F. Riehle, und U. Sterr: „Low-frequency-noise diode laser for atom interferometry“, J. Opt. Soc. Am. B 25 1632-1638 (2008)
S. Falke, H. Knöckel, J. Friebe, M. Riedmann, E. Tiemann und C. Lisdat: „Potassium ground-state scattering parameters and Born-Oppenheimer potentials from molecular spectroscopy“ Phys. Rev. A 78 012503 (2008)
Ch. Grain, T. Nazarova, C. Degenhardt, F. Vogt, Ch. Lisdat, E. Tiemann, U. Sterr and F. Riehle: „Feasibility of narrow-line cooling in optical dipole traps“, Eur. Phys. J. D 42, 317-324 (2007)
F. Vogt, Ch. Grain, T. Nazarova, U. Sterr, F. Riehle, Ch. Lisdat and E. Tiemann: „Determination of the calcium ground state scattering length by photoassociation spectroscopy at large detunings“, Eur. Phys. J. D 44, 73-79 (2007)
T. Nazarova, F. Riehle and U. Sterr: „Vibration-insensitive reference cavity for an ultra-narrow-linewidth laser“, Appl. Phys. B 83, 531-536 (2006)
H. Stoehr, F. Mensing, J. Helmcke and U. Sterr: „Diode Laser with 1 Hz Linewidth“, Opt. Lett. 31, 736-738 (2006)
C. Degenhardt, H. Stoehr, Ch. Lisdat, G. Wilpers, H. Schnatz, B. Lipphardt, T. Nazarova, P.-E. Pottie, U. Sterr, J. Helmcke and F. Riehle: „Calcium optical frequency standard with ultracold atoms: Approaching 10-15 relative uncertainty“, Phys. Rev. A 72, 062111-1-17 (2005)
C. Degenhardt, H. Stoehr, U. Sterr, F. Riehle and Ch. Lisdat: „Wavelength dependent ac-Stark shift of the 1S0-3P1 transition at 657 nm in Ca", Phys. Rev. A 70, 023414-1-6 (2004)
U. Sterr, C. Degenhardt, H. Stoehr, Ch. Lisdat, H. Schnatz, J. Helmcke, F. Riehle, G. Wilpers, Ch. Oates and L. Hollberg: „The Optical Calcium Frequency Standards of PTB and NIST“, C. R. Physique 5, 845-855 (2004)
C. Degenhardt, T. Binnewies, G. Wilpers, U. Sterr, F. Riehle, Ch. Lisdat, E. Tiemann: „Photoassociation spectroscopy of cold calcium atoms", Phys. Rev. A 67, 043408-1-6 (2003)
G.Wilpers, T. Binnewies, C. Degenhardt, U. Sterr, J. Helmcke, F. Riehle: „An Optical Clock with Ultra Cold Neutral Atoms", Phys. Rev. Lett. 89, 230801-1-4 (2002)
T. Trebst, T. Binnewies, F. Riehle, and J. Helmcke: „Suppression of spurious phase shifts in precision atom-light interferometry", IEEE Trans. Instrum. Meas. 50, (2001) pp. 535-538
T. Binnewies, G. Wilpers, U. Sterr, F. Riehle, J. Helmcke, T. E. Mehlstäubler, E. M. Rasel, and W. Ertmer: „Doppler cooling and trapping on forbidden transitions", Phys. Rev. Lett. 87, (2001) pp. 123002
T. Binnewies, U. Sterr, J. Helmcke, F. Riehle: „Cooling by Maxwell's demon: „Preparation of single-velocity atoms for matter-wave interferometry", Phys. Rev. A 62, (2000), 011601(R)
G. Zinner, T. Binnewies, F. Riehle, E. Tiemann: „Photoassociation of cold Ca atoms", Phys. Rev. Lett. 85, pp. 2292-2295 (2000)
U. Sterr, K. Sengstock, W. Ertmer, F. Riehle, J. Helmcke: „Atom Interferometry Based on Separated Light Fields". In P. R. Berman (Herausgeber): Atom Interferometry, Academic Press, San Diego (1997) 293-362
4.33
AG Röntgenoptik
Gitterparameter von Silizium
P. Becker, G. Cavagnero, U. Kuetgens, G. Mana, E. Massa: "Confirmation of IMGC and PTB Silicon Lattice Spacing Standards", IEEE Trans. on Instrumentation and Measurement 56 no 2 (2007) 5
P. Becker, H. Bettin, U. Kuetgens, B. Hallmann-Seifert, H. Riemann: "Silicon for primary metrology: The effect of hydrogen on its perfection", J. Phys. D: Appl. Phys. 38 (2005) 4109-4114
F. Alasia, G. Basile, P. Becker, U. Kuetgens, J. Stümpel, M. Servidori, J. Härtwig: "A Bragg-silicon lattice comparator", IEEE Trans. on Instrumentation and Measurement 50 (2001) 608-611
J. Martin, U. Kuetgens, J. Stümpel, P. Becker: "The silicon lattice parameter- an invariant quantity of nature?", Metrologia 35 (1998) 811-817
D. Windisch, P. Becker: "Lattice distortions induced by carbon in silicon", Phil. Mag. A 58 (1988) 435-443
H. Siegert, P. Becker, P. Seyfried: "Determination of silicon unit-cell parameters by precision measurements of Bragg plane spacings", Z. Phys. B 56 (1984) 273-278
P.Becker, K. Dorenwendt, G. Ebeling, R. Lauer, W. Lucas, R. Probst, H.-J. Rademacher, G. Reim, P. Seyfried, H. Siegert: "Absolute measurements of the (220) lattice plane spacing in a silicon crystal", Phys. Rev. Lett. 46 (1981) 1540-1543
4.33
AG Röntgenoptik
Röntgeninterferometer für die Nanometrologie
A. Yacoot, U. Kuetgens, L. Koenders, T. Weimann: "A combined scanning tunnelling microscope and X-ray interferometer [for grating structures calibration], Measurement Science & Technology 12 (2001) 1660-1665
Wang Lin, Li Dacheng, Cao Mang, L. Koenders, U. Kuetgens, P. Becker, "Angstrom ruler for high-accuracy pitch measurement", Applied Optics 39 (2000) 4535-4539
G. Basile, P. Becker, A. Bergamin, G. Cavagnero, A. Franks, K. Jackson, U. Kuetgens, G. Mana, E.W. Palmer, C.J. Robbie, M. Stedman, J. Stümpel, A. Yacoot, G. Zosi: "Combined optical and x-ray interferometry for high precision dimensional metrology", Proc. R. Soc. Lond. A 456 (2000) 701-729
U. Kuetgens, P. Becker: "X-ray Angle Interferometry: a practical set-up in the microrad range with nanorad resolution", Meas. Sci. Technol. 9 (1998) 1072-1075
D. Windisch, P. Becker: "Angular Measurements with X-ray Interferometry", J. Appl. Cryst. 25 (1992) 377-383
P. Becker, J. Stümpel: "X-ray optics in metrological applications", Metrologia 27 (1990) 127-132
4.33
AG Röntgenoptik
Andere Röntgeninterferometer und -monochromatoren
Yu.V. Shvyd´ko, M. Lerche, U. Kuetgens, H.D. Rüter, A. Alatas, J. Zhao, J.: "X-ray Bragg diffraction in asymmetric backscattering geometry", Phys. Rev. Lett. 97 (2006) 235502/1-4
J.P. Sutter, T. Ishikawa, U. Kuetgens, G. Materlik, Y. Nishino, A. Rostomyan, K. Tamasaku, M. Yabashi: "An X-ray BBB Michelson interferometer", Journal of Synchrotron Radiation 11 (2004) 378-385
P. Becker, U. Bonse, A. Dettmer, F. Dubus, H. Rauch, M. Zawisky: "Neutron interferometer with very thin-lamellae", Cryst. Res. Technol. 36 (2001) 589-600
4.33
AG Röntgenoptik
Wellenlängenstandards und XFPI
M. Lucht, M. Lerche, H,-C. Wille, Yu. V. Shvyd´ko, H.D. Rüter, E. Gerdau, P. Becker: "Precise measurement of the lattice parameter of a-Al2O3 in the temperature range 4.5K - 250K using the Mößbauer wavelength standard", J. Appl. Cryst. 36 (2003) 1075-1081
Yu.V. Shvyd`ko, E. Gerdau, M. Lerche, M. Lucht, H.-C. Wille, E.E. Alp, P. Becker: "Sapphire x-ray resonators, First experiments and results", Hyperfine Interactions (C) 5 (2002) 25-28
Yu.V. Shvyd´ko, M. Lerche, J. Jäschke, M. Lucht, E. Gerdau, M. Gerken, H.D. Rüter, H.-C. Wille, P. Becker, E.E. Alp, W. Sturhahn, J. Sutter, T.S. Toellner: "g-ray wavelength standard for atomic scales", Phys.Rev. Lett. 85 (2000) 495-498
S. Kraft, J. Stümpel, P. Becker, U. Kuetgens: "High resolution x-ray absorption spectroscopy with absolute energy calibration for the determination of absorption edge energies", Rev. Sci. Instr. 67 (1996) 681-687
4.33
AG Röntgenoptik
Röntgentopographie
B. Andreas, U. Kuetgens, P. Becker: "Fast and easy Bragg reflex search for Berg-Barrett topography of misoriented crystals", J Appl. Cryst. (2008) 818-821
D. Windisch, P. Becker: "Lattice strain measurements in silicon micropositioning elements by x-ray topography", SPIE 1015 (1988) 81-86
4.34
AG Avogadro-Konstante
P. Becker, P. DeBièvre, K. Fujii, M. Gläser, B. Inglis, H. Lübbig, G. Mana: "Consideration on future redefinitions of the kilogram, the mole, and of other units", Metrologia 44 (2007) 1-14
P. Becker, M. Jentschel, G. Mana, G. Zosi: "Towards an atomic realization of the kilogram: the measurement of NA and NA h", in : Proceedings of the International School of Physics, E. Fermi: Metrology and Fundamental Constants, Course CLXVI, Varenna, Italy 18th - 28th July 2006, ed. by S. Leschiutta, T. Hänsch, and A. Wallard, North-Holland, 2007
A. Yang, M. Steger, D. Karaiskaj, M.L.W. Thewalt, M. Cardona, K.M. Itoh, H. Riemann, N.V. Abrosimov, M.F. Churbanov, A.V. Gusev, A.D. Bulanov, A.K. Kaliteevskii, O.N. Godisov, P. Becker, H.-J. Phol, J.W. Ager III, and E.E. Haller: "Optical detection and ionization of donors in specific electronic and nuclear spin states", Phys. Rev. Lett. 97, (2006) 227401
P. Becker, D Schiel, H-J Pohl, A K Kaliteevski, O N Godisov, G G Devyatykh, A V Gusev, A D Bulanov, S A Adamchik, V A Gavva; I D Kovalev, N V Abrosimov, B Hallmann-Seiffert, H Riemann, S Valkiers, P Taylor: "Large scale production of highly isotopic enriched 28Si for precision determination of the Avogadro constant", Meas. Sci. Technol. 17 (2006) 1854-1860
P. Becker, H. Bettin, H-U Danzebrink, M. Gläser, U. Kuetgens, A. Nicolaus, D. Schiel, P. DeBievre, S. Valkiers, P. Taylor: "Determination of the Avogadro constant via the silicon route", Metrologia 40 (2003) 271-287
P. Becker: "History and progress in the accurate determination of the Avogadro constant", Rep. Prog. Phys. 64 (2001) 1945-2008
FB 4.3 - Dissertationen
Felix Vogt: „Creation of cold and dense ensembles of calcium atoms“, Universität Hannover, (2009)
Tatiana Nazarova: „Towards the quantum noise limit in Ramsey-Bordé atom interferometry“, Fakultät für Mathematik und Physik der Gottfried Wilhelm Leibniz Universität Hannover, (2007)
Carsten Degenhardt: „Freie und gespeicherte Calcium-Atome für ein optisches Frequenznormal“ , Universität Hannover, (2004)
Hardo Stoehr: „Diodenlaser mit Hertz-Linienbreite für ein optisches Calcium-Frequenznormal“, Universität Hannover, (2004)
G. Wilpers: „Ein optisches Frequenznormal mit kalten und ultrakalten Atomen", Universität Hannover, 2002, und PTB-Bericht, PTB-Opt-66, 2002
T. Binnewies: „Neuartige Kühlmethoden zur Erzeugung ultrakalter Ca-Atome", Universität Hannover, 2001, und PTB-Bericht, PTB-Opt-65, 2001
T. Trebst: „Atominterferometrie im Zeitbereich", Universität Hannover, 1999, und PTB-Bericht, PTB-Opt-60, 1999
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