Optik & Photonik 2015/5 December

Optik & Photonik Issue 5/2015

Optik & Photonik December 2015 issue

Cover Picture

Cover Picture: Optik & Photonik 5/2015

Modern fluorescence microscopy utilizes broadband polarization‐maintaining fiber optics to study the fundamental building blocks of life. Applied to the evanescent field of a totally reflected beam fluorescence microscopy makes it possible to investigate dynamic processes at the single molecule level.

Editorial

Shining Light on Sustainability
  • John Dudley, Jorge Rivero González
  • Page 1-1

Contents

Contents: Optik & Photonik 5/2015
  • Page 2-3

News

News: Optik & Photonik 5/2015
  • Page 4-7

Products

Products: Optik & Photonik 5/2015
  • Page 8-10

Organizations & Initiatives

Bringing Together Photonic and Medical Communities
  • Page 11-11

Research & Technology

Measuring Specular Surfaces with Lasers
  • Page 12-12
Tandem Solar Cells Are Simply Better
  • Page 13-13
Mathematical Modeling Enables Lowcost Biomedical Imaging
  • Page 14-14
No Lens? No Problem for FlatCam
  • Page 14-14
Using Lightforce to Study Single Molecules
  • Page 15-15

 

Fiber Optics

New Ways to Generate FlatTop Profiles

Previously, flat‐top beam profiles were usually generated in laser technology through homogenizers. These beam shaping optics are, however, both expensive and diminish the laser output. Optical fibers with a rectangular core geometry offer an alternative, by being able to homogenize the intensity distribution of a laser beam without reducing its performance.

  • Bronislav Hracek, Holger Bäuerle
  • Page 16-18
Broadband Polarizationmaintaining Fiber Optics

Modern fluorescence microscopy allows the fundamental building blocks of all life to be studied at a level of detail and accuracy that would have been inconceivable just a few years ago. One example is the movement of intracellular motor proteins responsible for muscle contraction or for the transport of biological cargo along microtubules within the cell. To study these systems using fluorescence microscopy, laser light…

  • Anja Knigge, Ulrich Oechnser, Bernhard Brenner, Tim Scholz
  • Page 19-22

Optical Measurement Technology

Measuring Large Nonplanar Optics

The evaluation of the surface form quality of large‐scale optical components in general and large cylindrical components in particular is most challenging. Such surfaces can be measured with planar Fizeau‐type interferometers equipped with computer generated holograms. This article provides an overview of the measurement process using sub‐aperture stitching techniques, the degrees of freedom of the measuring system, the…

  • Jan‐Peter Richters, Florian Wolfgramm, Rainer Schuhmann
  • Page 23-26
Topography Profiling

A confocal microscope, including sample handling, was used and adapted to measure the topography of fragile ophthalmological components, such as soft contact lenses and intra‐ocular lenses, in their physiological wet condition. Local micro‐structures, such as diffractive profiles, were investigated, and the enveloping global macro‐to‐pography was determined with high accuracy.

  • Katharina Frey, Holger Hage, Mario Gerlach, Robert Brunner
  • Page 27-30

Optical Measurement Technologies

Detecting Drugs in Saliva

For law enforcement and medical professionals, rapid detection of illicit and harmful drugs saves time, resources and even lives. Raman spectroscopy is a well‐established method for substance identification, but until now has not been practical for human intoxication testing. Surface Enhanced Raman Spectroscopy (SERS) substrates have reduced sensitivity and cost barriers, allowing Raman to be successfully applied to…

  • Nick Barnett, Cicely Rathmell
  • Page 31-34

Microscopy

Get the Picture!

The power of today’s high‐resolution fluorescence imaging brings new capabilities to bear on everything from serum analysis to water quality inspection. Fluorescence filter cubes help scientists and engineers develop and create powerful new systems. Tight control over chromatic bands and optical wavefront, coupled with infinity‐corrected optical train design, brings unprecedented interchangeability and performance to new…

  • Stephan Briggs
  • Page 35-38
Widefield Two Photon Microscopy

Two Photon Microscopy (2PM) generates microscopic images out of depth of biological samples. Up to now the method is restricted by narrow limitations of the field of view, the imaging depth and the orientation of the image field. A new approach overcomes these boundaries and delivers high resolution images revealing very specific information on clinically and biologically relevant tissue and cell structures. The status of…

  • Nadine Döge, Erik Thiel, Gunter Seewald, Stephanie Albrecht, Annika Vogt, Julia Liebscher, Karl‐Heinz Schönborn
  • Page 39-42

Optical Design

Geometrical Optics Reloaded

Ray optics has constituted the fundament of optical modeling and design for more than 2000 years. In recent decades, the introduction of ray tracing software has brought a powerful optical design technology to everybody dealing with optics and photonics. However, with the development and availability of advanced light sources, the capability to produce micro and nano structures, and a boost in the variety of applications…

  • Frank Wyrowski, Christian Hellmann
  • Page 43-47
Ridge Waveguides — Tailored Components for a Wide Range of Applications

Guiding light is an essential issue in telecommunication or sensor applications, in optical metrology and integrated optic circuits. Each application has different demands on waveguide dimensions, properties, electromagnetic field distribution, and transmission characteristics. Here, we present an overview on different waveguide designs and design criteria, fabrication technologies, as well as selected applications. …

  • Mareike Stolze, Benjamin Weigand, Johannes A. L’huillier
  • Page 48-52

Calendar

Events February 2016 — June 2016
  • Page 53-53

Meetings

Meetings: Optik & Photonik 5/2015
  • Page 54-55

Service

Buyers’ Guide
  • Page 56-56

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