43 Result(s)

Article

Inserting single Cs atoms into an ultracold Rb gas

We report on the controlled insertion of individual Cs atoms into an ultracold Rb gas at ≈400 nK. This requires one to combine the techniques necessary for cooling, trap** and manipulating single laser coole...

N. Spethmann, F. Kindermann, S. John, C. Weber, D. Meschede, A. Widera in Applied Physics B (2012)

Article

Optical nanofibers and spectroscopy

We review our recent progress in the production and characterization of tapered optical fibers with a sub-wavelength diameter waist. Such fibers exhibit a pronounced evanescent field and are therefore a useful...

R. Garcia-Fernandez, W. Alt, F. Bruse, C. Dan, K. Karapetyan… in Applied Physics B (2011)

Article

Resist-assisted atom lithography with group III elements

Resist-assisted atom lithography with group III elements, specifically with gallium and indium, is demonstrated. Self-assembled monolayers (SAM) of nonanethiols prepared on thin sputtered gold films were expos...

A. Camposeo, O.M. Maragò, B. Fazio, B. Klöter, D. Meschede, U. Rasbach… in Applied Physics B (2006)

Article

The atom pencil: serial writing in the sub-micrometre domain

The atom pencil we describe here is a versatile tool that writes arbitrary structures by atomic deposition in a serial lithographic process. This device consists of a transversely laser-cooled and collimated c...

M. Mützel, M. Müller, D. Haubrich, U. Rasbach, D. Meschede, C. O’Dwyer… in Applied Physics B (2005)

Article

Application of electro-optically generated light fields for Raman spectroscopy of trapped cesium atoms

We present an apparatus for generating a multi-frequency laser field to coherently couple the F=3 and F=4 ground state of trapped cesium atoms through Raman transitions. We use a single frequency diode laser a...

I. Dotsenko, W. Alt, S. Kuhr, D. Schrader, M. Müller… in Applied Physics B (2004)

Article

Atomic nanofabrication with complex light fields

The method of neutral atom lithography allows one to transfer to a substrate a 2D intensity modulation of an atomic beam imposed by an inhomogeneous light field. The complexity of the pattern depends on the pr...

M. Mützel, U. Rasbach, D. Meschede, C. Burstedde, J. Braun, A. Kunoth… in Applied Physics B (2003)

Article

An optical conveyor belt for single neutral atoms

Using optical dipole forces we have realized controlled transport of a single or any desired small number of neutral atoms over a distance of a centimeter with sub-micrometer precision. A standing wave dipole ...

D. Schrader, S. Kuhr, W. Alt, M. Müller, V. Gomer, D. Meschede in Applied Physics B (2001)

Chapter

Atom Lithography with Cesium Atomic Beams

Optical lithography is the dominant method of manufacturing lateral microand nanostructures in nearly all areas of technology, but it is predicted to be limited to feature sizes of about 100 nm due to diffract...

F. Lison, D. Haubrich, D. Meschede in Atomic and Molecular Beams (2001)

Chapter

Diseases of the Hypothalamus and the Pituitary Gland

Idiopathic hypogonadotropic hypogonadism (IHH) and Kallmann syndrome (Kallmann et al. 1944) are closely related diseases sharing disturbed hypothalamic secretion of GnRH as their core pathophysiological featur...

H. M. Behre, E. Nieschlag, D. Meschede, C. J. Partsch in Andrology (2001)

Chapter

Diseases of the Seminal Ducts

Infections of the seminal ducts can lead to male infertility by different mechanisms. Direct damage is caused by microorganisms or their secretory products, while secondary inflammation is produced by increase...

H. M. Behre, E. Nieschlag, D. Meschede in Andrology (2001)

Chapter

Disorders of Androgen Target Organs

In this chapter, as throughout this volume, we classify diseases according to where they originate, i. e. in which organ or physiological system. All disease entities dealt with under Sect. 11.1–11.2 have in c...

D. Meschede, H. M. Behre, E. Nieschlag in Andrology (2001)

Chapter

Assisted Fertilization

Even the most intensive diagnostic protocol cannot identify all factors contributing to infertility. Only in a few instances can treatment which eliminates all factors causing infertility be carried out. Such ...

C. De Geyter, M. De Geyter, D. Meschede, H. M. Behre in Andrology (2001)

Chapter

Disorders at the Testicular Level

Unilateral or bilateral absence of testicular tissue in genetic males is called anochia. Anorchia has to be differentiated from partial or complete testicular atrophy, e.g. following torsion of orchitis, when,...

E. Nieschlag, H. M. Behre, D. Meschede, A. Kamischke in Andrology (2001)

Article

Special issue: Nanomanipulation of atoms

D. Meschede, J. Mlynek in Applied Physics B (2000)

Article

Nanoscale focusing of atoms with a pulsed standing wave

We have theoretically and experimentally investigated the focusing properties of a detuned pulsed standing wave onto a beam of neutral atoms. In close analogy to the continuous-wave situation the dipole force ...

M. Mützel, D. Haubrich, D. Meschede in Applied Physics B (2000)

Article

Reflection of cold atoms by a cobalt single crystal

We have demonstrated that a cobalt single crystal can be used to make a remarkably smooth retro-reflector for cold paramagnetic atoms. The crystal is cut so that its surface lies in the (0001) plane and the at...

P. Rosenbusch, J.A. Retter, B.V. Hall, E.A. Hinds, F. Lison… in Applied Physics B (2000)

Article

GaN blue diode lasers: a spectroscopist’s view

We have characterized the spectroscopic properties of one of the first samples of blue-emitting diode lasers based on GaN. With such a laser diode operated inside a standard extended cavity arrangement we find...

H. Leinen, D. Glässner, H. Metcalf, R. Wynands, D. Haubrich… in Applied Physics B (2000)