Concept

F-number

Related publications (99)

High light field confinement for Fluorescence Correlation Spectroscopy using a Solid Immersion Lens

Theo Lasser, Denis Martin, Ramachandra Rao

In this paper we present recent single molecule detection experiment using a solid immersion lens (SIL) for fluorescent correlation spectroscopy measurements. We compared the performance of the SIL in combination with an air objective (40×, numerical apert ...

2004

Nanoscale dispensing of liquids through cantilevered probes

Nico de Rooij, Terunobu Akiyama, Sylvia Jeney, André Meister

Nanoscale dispensing is a novel technique to deposit material and create structures at dimensions of 100 nm and below. It has great flexibility in feature shape and choice of deposited material. Due to its potential low cost and lack of time consuming step ...

2003

Folded shift multiplexing

Demetri Psaltis, Wei Liu

Shift multiplexing is a holographic recording method that uses a spherical reference wave. We extend the principle to a thin slab of holographic material that acts as a waveguide. Total internal reflection folds the reference spherical beam in one dimensio ...

2003

Digital holography applied to microscopy

Pierre Magistretti, Christian Depeursinge, Tristan Colomb, Etienne Cuche, Frédéric Montfort, Pierre Marquet, Mihaela Marian

We report on new developments of a technique, called Digital Holographic Microscopy (DHM), for the numerical reconstruction of digital holograms taken in microscopy, which allows simultaneous amplitude and quantitative phase contrast imaging. The reconstru ...

SPIE2002

Full wafer size micro/nanostencil with multiple length-scale apertures

Jürgen Brugger, Marc Antonius Friedrich van den Boogaart

Sub-micron scale lithography methods using deep UV, X-ray or electron beams will allow for further progress in integrated circuit hardware manufacturing. The drawback of these high-end patterning methods however is firstly, the high cost of the equipment, ...

2002

Low numerical aperture refractive microlenses in fused silica

Hans Peter Herzig

Fused silica microlenses with low numerical apertures (NAs) were fabricated. The original photoresist element was realized by the melting resist technology and was transferred into fused silica by reactive ion etching. Low selectivity etching was applied t ...

2001

Rigorous analysis of focusing grating couplers using a time-domain spectral collocation method

Jan Sickmann Hesthaven

Diffractive optical elements comprising sub-wavelength aperiodic surface reliefs of finite length require the use of rigorous solvers for Maxwell's equations. We present a detailed analysis of Focusing Grating Couplers (FGC's) using a recently introduced 2 ...

SPIE2000

Refractive and diffractive properties of planar micro-optical elements

Hans Peter Herzig

The refractive and the diffractive properties of planar micro-optical elements are investigated. The transition between purely refractive and purely diffractive planar microlenses is numerically simulated for the example of differently designed phase-match ...

Optical Society of America1995

Performance of on-axis holography with a flexible endoscope

Christian Depeursinge

A new holographic technique based on a numerical reconstruction method is presented and applied to endoscopic holograms. The hologram is obtained by the interference between the light reflected by the object and a reference beam taken as a plane wave trave ...

SPIE1993

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