Proton radiography or microscopy is a novel technique for probing the interior of dense objects in dynamic experiments by mono-energetic beams of GeV-energy protons. A special system of magnetic lenses is employed for imaging and aberrations correction. Using this technique, one can measure areal density of a thick sample with sub-percent accuracy. The spatial resolution is a few micrometers ov...

The Fresnel lens can be used in a wide variety of applications. The basic principles of the Fresnel lens are review­ ed and some practical examples are des­ cribed. There are definite advantages and tradeoffs that should be considered when deciding if a Fresnel lens is the appropri­ ate component to use in a design. Some basic optimization rules are presented which may facilitate a first order ...

All-optical photonic devices are crucial for many important photonic technologies and applications, ranging from optical communication to quantum information processing. Conventional design of all-optical devices is based on photon propagation and interference in real space, which may rely on large numbers of optical elements, and the requirement of precise control makes this approach challengi...

manufacturing of an optical lenses demand a specialized technology and thus needs sophisticated precision manufacturing process. pmma is one of the most used optical polymer for manufacturing of optical lenses, the shaping of which into the required precision and accuracy is a challenging task. the focus of the present paper is to understand the effect of machining parameters on the surface cha...

Although fabrication technologies of Microstructured Optical Fibres (MOFs) fibres have matured at an impressive rate over the past ten years, these fibres are widely perceived as “challenging” and some key issues are still outstanding in order to improve their manufacturability. One such issue revolves around methods to improve structural control during the fibre draw. Structural control is of ...

A gas sensor based on correlation spectroscopy using a FPI with long cavity length (>500 μm) as a modulator is presented. Eventually the FPI and the optical detector will be integrated within a MEMS structure. ©2005 Optical Society of America OCIS codes: (220.4830) Optical systems design; (120.4640) Optical instruments; (120.4570) Optical design of instruments