As the success of nanostructures grows in modern society so does the importance of our ability to control their synthesis in precise manners, often with atomic precision as this can directly affect the final properties of the nanostructures. Hence it is crucial to have both deep insight, ideally with real-time temporal resolution, and precise control during the fabrication of nanomaterials. Tra...

We have initiated a research program to study the perjonnance of compuct optically-pumped cesium (Cs) frequency standards, which have potential for future timekeeping upplicutions in space. A Cs beam clock apparatus has been assembled. Basic functions of thefrequency standard have been demonstrated. Clocksignals are observed with opticalpumping schemes using one or two h e r s . With two-luserp...

Ultracold and slow beams have a huge potential in metrology, matter wave interferometry and nanolithography [1]. The achievement of an ultracold beam of neutrons was made possible by specularly reflecting neutrons from a Ni-surface which moved along the beam direction [2]. This breakthrough was followed by many achievements, among which neutron optics experiments [3] and neutron interferometry ...

Diffraction is a cornerstone of optical physics and has implications for the design of all optical systems. The paper discusses the so-called ‘non-diffracting’ light field, commonly known as the Bessel beam. Approximations to such beams can be experimentally realized using a range of different means. The theoretical foundation of these beams is described and then various experiments that make u...

We describe the design, characterization, and application of a simple, highly collimated, compact atomic/molecular beam source. This source is based on segmented capillary constructed using syringe needle. Angular width measurements free molecular flow simulations show that structure effectively suppresses atoms traveling in off-axis directions, resulting narrow Helium having 7 mrad (full half ...