On the role of Penning ionization in photoassociation spectroscopy (2006)
Zwan, E. Van Der, Oosten, D. Van, Nehari, D., Straten, P. Van Der, Stoof, H.T.C.
We study the role of Penning ionization on the photoassociation spectra of He(23S1)-He(23S1). The experimental setup is discussed and experimental results for different intensities of the probe laser...
Inelastic light scattering from a Mott insulator (2005)
Oosten, D. Van, Dickerscheid, D.B.M., Farid, B., Straten, P. Van Der, Stoof, H.T.C.
We propose to use Bragg spectroscopy to measure the excitation spectrum of the Mott-insulator state of an atomic Bose gas in an optical lattice. We calculate the structure factor of the Mott...
Analyses of photoassociation spectra for giant helium dimers (2004)
Leonard, J., Mosk, A.P., Walhout, M., Straten, P. Van Der, Leduc, M., Cohen-Tannoudji, C.
Mott insulator in an optical lattice with high filling fractions (2003)
Oosten, D. Van, Straten, P. Van Der, Stoof, H.T.C.
We discuss the superfluid to Mott insulator transition of an atomic Bose gas in an optical lattice with high filling factors. We show that in this multiband situation, the long-wavelength physics is...
Energy distributions of He+ and He2+ ions formed in ultracold He(23S1)+He(23P2) collisions (2002)
Pieksma, M., Cizek, M., Thomsen, J.W., Straten, P. Van Der, Niehaus, A.
Sideband generation using a Fiber-Optical Modulator (FOM) (2001)
Molenaar, P.A., Steenbergen, M.D., Straten, P. Van Der
We have constructed a Fiber Optical Modulator (FOM), which produces on the incoming laser frequency shifts of the order of 30 GHz. The modulator consist of a fiber of suffi- cient length, where the...
Quantum phases in an optical lattice (2001)
Oosten, D. Van, Straten, P. Van Der, Stoof, H.T.C.
We present the zero-temperature phase diagram of bosonic atoms in an optical lattice, using two different mean-field approaches. The phase diagram consists of various insulating phases and a...
Quantum phases in an optical lattice (2000)
Oosten, D. Van, Straten, P. Van Der, Stoof, H.T.C.
We present the zero-temperature phase diagram of bosonic atoms in an optical lattice, using two different mean-field approaches. The phase diagram consists of various insulating phases and a...
Photoassociation Spectroscopy of Cold He (2 3S) Atoms (2000)
Herschbach, N., Vassen, W., Hogervorst, W., Woestenenk, G., Thomsen, J.W., ...
Photoassociation Spectroscopy of Cold He(2^{3}S) Atoms (2000)
Herschbach, N., Hogervorst, W., Niehaus, A., Thomsen, J.W., Tol, P.J.J., Straten, P. Van Der, ...
Photo induced collisions with laser cooled He* atoms (1999)
Mastwijk, H.C., Rijnbach, M. Van, Thomsen, J.W., Straten, P. Van Der, Niehaus, A.
This paper presents an experimental investigation of cold collisions between metastable Helium atoms in an optical trap at 1mK. Penning (PI) and associative (AI) ionization reactions are...
Optical collisions of cold, metastable helium atoms (1998)
Mastwijk, H.C., Thomsen, J.W., Straten, P. Van Der, Niehaus, A.
Optical collisions of cold, metastable helium atoms (1998)
Mastwijk, H.C., Thomsen, J.W., Straten, P. Van Der, Niehaus, A.
We have studied the optical collisions of cold, metastable helium atoms in a magneto-optical trap. We have detected the rate of Penning and associative ionization of two metastable helium atoms at a...
Quantum trajectory pictures of laser cooling (1997)
Nienhuis, G., Kloe, J. De, Straten, P. Van Der
We have applied the method of single atom trajectories to study the mechanism behind some cooling schemes in laser cooling. In several cases we recognize the cooling mechanism as being due to a...
New diagnostic technique for Zeeman-compensated atomic beam slowing: technique and results (1997)
Molenaar, P.A., Straten, P. Van Der, Heideman, H.G.M., Metcalf, H.
We have developed a new diagnostic tool for the study of Zeeman-compensated slowing of an alkali atomic beam. Our time-of-flight technique measures the longitudinal veloc- ity distribution of the...
Long-range predissociation in two-color photoassociation of ultracold Na atoms (1997)
Molenaar, P.A., Straten, P. Van Der, Heideman, H.G.M.
We report two-color photo-associative ionization of sodium in a Magneto-Optical Trap. The experimental results yield information on both singly and doubly excited states. We find that the highest...
Vibrational state distribution of 2-Na^+ ions created in ultracold collisions (1997)
Blangé, J.J., Zijlstra, J.M., Amelink, A., Urbain, X., Rudolph, H., Straten, P. Van Der, ...
The vibrational distribution P(v) of 2-Na^+ ions created in ultracold collisions in a magneto-optical trap has been deter- mined. Only two vibrational states with v = 2 and 3 are popu- lated and we...
Diagnostic technique for Zeeman-compensated atomic beam slowing: Technique and results (1997)
Molenaar, P.A., Straten, P. Van Der, Heideman, H.G.M., Metcalf, H.J.