Thursday, 20. June 2013
Recent news
2013/03
:
Ultracool at 1.3 Kelvin: Ph.D. student Heiko Luckmann puts into operation a new pulse tube cryostat suitable for precision experiments
2013/03
:
Analysis of the potential of existing underground optical fiber networks for implementing gyroscopes for geophysics applications
2013/02
:
With passion from Florence: master student Soroosh Alighanbari and post-doc Qun-Feng Chen integrate a frequency stabilization system into the transportable optical clock at the Università di Firenze
2012/09
:
Observation of the clock transition of ultracold Yb atoms in an optical lattice, with an all-diode-laser apparatus (with Prof. A. Görlitz)
2012/05
:
First year of the EU-FP7 Project "Space Optical Clocks 2" is successfully completed
2012/01
:
First demonstration of rotational excitation of a sympathetically cooled molecular ion species
2011/12
:
Ultrastable lock of lasers to high-finesse optical cavities: 2 x 10
-17
achieved
2011/11
:
First optical measurement of the hyperfine spectrum of the HD
+
molecular ion and demonstration of quantum state addressing in sympathetically cooled molecular ions
2011/09
:
A novel continuous-wave laser system for spectroscopy at 5.1 µm and optical frequency measurements is successfully applied to molecular spectroscopy
2011/07
:
Sympathetically cooled polyatomic molecular ions: first demonstration of vibrational spectroscopy
2011/07
:
Whispering gallery resonators are predicted to exhibit ultralow thermal noise at cryogenic temperature and could be of interest for frequency stabilization of lasers
2011/06
:
High resolution spectroscopy of long-lived spectral holes in a cryogenic crystal: determination of a very low frequency drift
2011/03
:
A novel fiber laser system emitting in the UV greatly simplifies laser cooling of Beryllium ions
2011/02
:
ESA selects "STE-QUEST" as one of four medium-size candidate missions for a flight in 2022+
media response:
HHU-Düsseldorf
2010/12
:
Contribution to the proposal "STE-QUEST" for an ESA satellite mission to test General Relativity
2010/10
:
A transportable ultrastable laser developed by PTB is compared in our laboratory to our own ultrastable laser via a frequency comb virtual beat
2010/07
:
Theory of the Zeeman effect in the HD+ molecular ion
2009/12
:
Achievement of all-optical state preparation of molecular ions in the rovibrational ground state
2009/08
:
A laser test of the isotropy of light propagation at the 2×10
-17
level
media response:
physicsworld
, pro-physik
, lenta.ru
2008/11
:
Chapter on “Sympathetically cooled molecular ions” to appear in the book “Cold Molecules”
2008/10
:
Demonstration of continuous-wave THz sources with Hz-level linewidth
2008/10
:
First demonstration of sympathetic translational cooling of proteins in an ion trap
2008/06
:
Observation of the clock transition in cold neutral Ytterbium
2008/04
:
A narrow-linewidth single-frequency yellow source based on a diode laser is demonstrated
2007/07
:
International team including Düsseldorf researchers proposes an optical clock satellite mission in ESA's Cosmic Vision program
2007/06
:
Düsseldorf frequency comb allows first precise measurement of the stability of a cryogenic optical resonator
2007/04
:
Grating-enhanced external cavity diode laser with 30 kHz free-running linewidth, allows high-fidelity phase lock to reference frequency
2007/03
:
A workshop on an optical clock mission in ESA's Cosmic Vision program (Düsseldorf, March 8-9, 2007).
2007/02
:
Most precise measurment of a transition frequency in a molecular ion: vibrational spectroscopy of cold HD
+
ions.
2006/06
:
First ro-vibrational spectroscopy on cold trapped molecular ions below 0.1 K.
2006/06
:
First translational cooling of complex molecular ions to below 1 K
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