Optik & Photonik 4/2017 October

Optik & Photonik 4/2017 (Source: Wiley)

Cover Picture

Cover Picture: Optik & Photonik 4/2017

Fisba is a leading supplier for customized optical components and systems for life sciences applications. The company is a specialist for all questions starting from custom design, followed by prototype production and ending with larger scale production. Everything is done efficiently under one roof in Switzerland.

Editorial

Source of Innovation in Applied Optics
  • Stefan Sinzinger (TU Ilmenau / German Society of Applied Optics, DGaO)
  • Page 1

Contents

News

Products

Research & Technology

Organizations & Initiatives

Technology Report

Optical Beam Shaping: Unmet Needs in Laser Materials Processing
  • Ana Belén González, Jose Pozo (EPIC)
  • Pages 15-17

Interview

Continuation of Wilhelm Stemmer’s Lifetime Achievement

At the end of the financial year 2016/17, AL‐KO acquired 75.04 % of the shares in Stemmer Imaging GmbH from the company’s founder Wilhelm Stemmer. He and the two newly appointed managing directors Christof Zollitsch and Martin Kersting explain the reasons for taking this step.

  • Peter Stiefenhöfer
  • Pages 18-19

Optical Fibers

Fiber Optic Technology Trends in Data Transmission

The use of smartphones, tablets, and other mobile computer systems; the rise in the implementation of business transactions (e.g., e‐commerce, e‐government); and the digitalization of data all advance the need for the constant upgrading of data networks. The data rates still continue to increase significantly – almost exponentially – worldwide every year [1]. Only by applying fiber optic technology in all areas can these…

  • Andreas Hornsteiner (Laser Components)
  • Pages 20-24

Optogenetics

OPSLs Meet Need for Yellow Lasers

Neuroscience represents the most dynamic and active area of life science research, in part because of massive funding programs such as the Human Brain Project (HBP) in the EU, and similar programs in USA and Asia. Photonics, and particularly lasers, are playing key roles in many important discoveries via confocal microscopy, superresolution microscopy, multiphoton microscopy and / or optogenetics. Some experiments in…

  • Matthias Schulze (Coherent)
  • Pages 25-27
Femtosecond Lasers Advance Two‐Photon Optogenetics

Optogenetics combines genetic and optical techniques to selectively and specifically modulate signaling pathways in living intact organisms using light. The rapidly expanding field has been driven by developments in ultrafast laser and microscope technologies. Inside a microscope, laser light can be focused precisely on specific neurons containing light sensitive ion channels, or opsins, and cause these neurons to activate…

  • Sebastian Peck (Spectra-Physics)
  • Pages 28-31

Optoelectronics

First CCD‐in‐CMOS‐Based Multispectral TDI Image Sensor

A new approach to charge‐coupled device (CCD)‐based time‐delay‐and‐integration (TDI) imaging is presented that implements the CCD TDI pixels together with advanced CMOS drivers and readout in one single chip. This CCD‐in‐CMOS technology is compatible with backside illumination for enhanced sensitivity, and multispectral filters can be added for increased imaging performance. With this highly sensitive and high‐speed imaging…

  • Jonathan Borremans, Piet De Moor (Imec)
  • Pages 32-35

Measurement Technology

Confidence in Optical Thickness Measurements

Reflectometry is a well‐established method to determine the thickness of transparent thin films. Two methods to calculate the film thickness are commonly used. The frequency of the signal which is modulated by the film can be analyzed by means of the fast Fourier transform. The second option is to fit the measured spectrum to a model of the film stack. To be able to assess the quality of the result, an indication of the…

  • Alejandro Avellán, Thorsten Gräfen, Eric Jung, Matthias Meyer, Jochen Schmidt, Christoph Szigalla, Bastian Tröger (FRT)
  • Pages 36-37

Optical Sensing

“Spectra‐cular” Measurements

In a world of Industry 4.0, sensors must perform high‐speed measurements and provide high‐precision results in order to ensure reliable quality assurance. In particular, optical measurement technology is becoming more important for production and inspection processes, as it is non‐contact and independent of the target material and surface properties. This is a decisive advantage in a ‘live’ production process where tactile…

  • Alexander Streicher (Micro-Epsilon)
  • Pages 38-40

Measurement Technology

Shrinkage Measurements of UV‐Curable Adhesives

Curing processes of any adhesive are always accompanied with its volumetric change, known as polymerization shrinkage. Although the relative volume change is usually less than a few percent, shrinkage is particularly problematic for applications where sub‐μm positioning is required, such as bonding of micro‐optics or optical fibers. We present a simple method to precisely measure the linear shrinkage of UV‐curable adhesives…

  • Wojciech Lewoczko‐Adamczyk, Sebastian Marx, Henning Schröder (Fraunhofer IZM)
  • Pages 41-43

Tutorial

Efficient Computational Methods for Optical Components

When performing computations to answer questions surrounding the design of optical components, several different numerical methods can be useful. Which method to choose depends on the size of the component and the nature of the electromagnetic wave propagation. Very accurate general‐purpose methods, so called full‐wave methods, are frequently used when designing micro‐ and nano‐optical devices, whereas approximate methods…

  • Bjorn Sjodin (Comsol Multiphysics)
  • Pages 44-47

Application Report

Scanners Help Keep Naval Ships in Perfect Condition

Marinebedrijf Koninklijke Marine is a Dutch company responsible for the maintenance of all naval vessels and submarines of the Dutch Royal Navy, as well as M class frigates of the Belgian Navy. The company also creates new parts for those ships and makes modifications of everything from the hull to weapon systems and engines.

  • Yulia Ponomareva (Arctec Europe)
  • Pages 48-49

Calendar

Meetings

Service

Buyers’ Guide
  • Page 56

Index & Masthead

Company Index
  • Page 57

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