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Improving laser optics coatings

15.11.2013 - Photonik international /2013

More process control and flexibility are key for coatings used with ultra-fast laser optics. In the following, we discuss the most relevant considerations in the manufact...
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This technical articel is also under the category: Optical Components

Innovative design and manufacturing of gradient and quasigradient coatings

15.11.2013 - Photonik international /2013

Complex optical coatings are essential for a variety of optical systems. The more complex the optical system specifications, the more complex the coating design requireme...
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This technical articel is also under the category: Manufacturing of Optics

Revealing the invisible – identifying concealed substances by means of terahertz spectroscopy

15.11.2013 - Photonik international /2013

Is that powder in the envelope dangerous? Is the right mixture flowing through the pipe? Is the semiconductor doped correctly? Terahertz spectroscopy can help answer thes...
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This technical articel is also under the category: Optical Metrology

Multiwavelength interferometry measures topology of aspherical optics

15.11.2013 - Photonik international /2013

“You can only make as well as you can measure,” is the maxim the British engineer Sir Joseph Whitworth formulated by the middle of the 19th Century. Thus, toda...
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This technical articel is also under the category: Optical Components

Hyperspectral imaging sensor systems using tunable lenses

15.11.2013 - Photonik international /2013

Hyperspectral imaging systems record information with high resolution in both the spatial and spectral regimes simultaneously. One central challenge remains distribution ...
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This technical articel is also under the category: Image Capturing and Processing

Multi-gas sensing by broadband laser spectroscopy

15.11.2013 - Photonik international /2013

A new method of absorption spectroscopy is being developed to provide high spectral resolution and wide spectral coverage using a single multi-mode laser and a single det...
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This technical articel is also under the category: Optical Spectroscopy

Line scan cameras inspect internal O-ring groove surfaces

15.11.2013 - Photonik international /2013

With a “Scheimpflug Configuration“, three line scan cameras simultaneously inspect not only the horizontal floor and surrounding flanking areas, but also the vertical sid...
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This technical articel is also under the category: Optical Metrology

Real-time closed-loop control by high-speed image processing optimises laser welding

15.11.2013 - Photonik international /2013

It is hard to imagine modern manufacturing without laser welding processes. These allow fast and flexible welding in vehicle body construction at points that cannot be ea...
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This technical articel is also under the category: Laser Technology

Process monitoring in laser micro machining

15.11.2013 - Photonik international /2013

Laser micro machining and laser surface structuring are innovative manufacturing technologies, and useful with a wide range of machinable materials. They both offer high ...
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This technical articel is also under the category: Optical Metrology

MIXSEL: Picosecond semiconductor disk laser with integrated saturable absorber

15.11.2013 - Photonik international /2013

A MIXSEL (Modelocked Integrated eXternal-cavity Surface Emitting Laser) is a compact ultrafast semiconductor disk laser. The concept is based on a VECSEL, an optically pu...
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CW laser light tunable from blue to red: OPOs pave the way

15.11.2013 - Photonik international /2013

Optical parametric oscillators (OPOs) are widely tunable and thus turn out as very flexible light sources. Until recently, OPOs for the visible frequency range were comme...
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High power femtosecond diode laser systems

15.11.2013 - Photonik international /2013

Femtosecond (fs) laser technology is promising for many new applications including fundamental research, metrology, and material processing. While the high price and enor...
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Laser lift-off: reducing device heights in microelectronics by means of substrate transfer

15.11.2013 - Photonik international /2013

There is an inevitable trend towards lighter, slimmer and yet increasingly powerful mobile consumer electronic devices. Reducing size and weight of a terminal device whil...
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This technical articel is also under the category: Manufacturing of Optics

System integration and benefits of beam shaping elements

15.11.2013 - Photonik international /2013

While well-tried optical setups are adaptable, more often many users resist optimising or expanding such optical paths with additional beam shaping optics. However, the i...
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This technical articel is also under the category: Optical Components

Highly precise polymer microoptics for optical sensor applications

15.11.2013 - Photonik international /2013

This article describes the economic advantages of injection moulding for production of polymer microoptics. We will discuss the requirements, the technical capabilities a...
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This technical articel is also under the category: Manufacturing of Optics

Electrically tunable polymer lenses for fast and compact focusing solutions

15.11.2013 - Photonik international /2013

For applications using lenses with a tunable focal length, optical system designs can be realised with more compact and less mechanical components. Here, we introduce foc...
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This technical articel is also under the category: Image Capturing and Processing

Backside-illuminated CMOS image sensors deliver higher sensitivity

13.11.2012 - Photonik international /2012

Backside-illuminated CMOS image sensors possess higher sensitivity in a broader spectrum than mainstream image sensors using frontside illumination. This article explores...
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Distributed fibre-optic temperature and strain measurement with extremely high spatial resolution

13.11.2012 - Photonik international /2012

"Scanning the Rayleigh scattering along a length of optical fibre enables a distributed sensor system where every point along the fibre acts as a sensor. This novel metho...
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This technical articel is also under the category: Fibre optics and Optical Communication

Chiral photonic metamaterials – polarization control by nanostructuring

13.11.2012 - Photonik international /2012

Artificial photonic metamaterials consist mainly of exotically shaped metallic nanostructures. By tailored design of their geometrical parameters, they can enhance optica...
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This technical articel is also under the category: Manufacturing of Optics

Prototyping illumination systems with stock optical components

13.11.2012 - Photonik international /2012

In most imaging system designs, development efforts focus on the imaging optics. But illumination can be an equally important factor in the success of such systems. The p...
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This technical articel is also under the category: Incoherent Light Sources

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