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Optimize your process with high-speed imaging

12.11.2009 - Photonik international 2/2009

The devil is in the details of every rapid-motion process. Clues to problems, solutions, and many other significant details are often lost in observations made at origina...
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Transistors behind the lens – electronic shuttering on image sensors

12.11.2009 - Photonik international 2/2009

In the development of image sensors, many things need to be balanced such as resolution vs. sensitivity or pixel complexity vs. fill-factor. This article illustrates how ...
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Automatic detection of surface and structural defects on reflecting workpieces

12.11.2009 - Photonik international 2/2009

In automatic real-time inspection of reflecting surfaces, the high-precision positioning required for the workpiece is particularly challenging. A new inspection algorith...
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This technical articel is also under the category: Optical Metrology

Super-resolution videos and single-molecule microscopy of living cells

12.11.2009 - Photonik international 2/2009

Super-resolution microscopy is quickly evolving. After the development of the STED microscope, future device generations could deliver videos of dynamic processes within ...
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Generation of ultrashort laser pulses and frequency combs by carrier-envelope phase stabilisation

12.11.2009 - Photonik international 2/2009

Carrier-Envelope Phase (CEP) stabilization of Titanium:Sapphire lasers has enabled a new generation of laser applications such as synthesis of frequency combs for atomic ...
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Pumping high-power fiber lasers with multi-element laser diodes

12.11.2009 - Photonik international 2/2009

Spurred by recent advances in output power and beam quality, fiber lasers are gaining acceptance across a variety of applications, including micro-cutting, welding and ma...
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Guide structures for splicing single-mode fibres fabricated using deep lithography

12.11.2009 - Photonik international 2/2009

Deep lithography is used for cost-efficient fabrication of a precise guide structure for aligning single-mode fibres. Subsequent splicing, of the fibres positioned with t...
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This technical articel is also under the category: Manufacturing of Optics

Beam manipulation: prisms vs. mirrors

12.11.2009 - Photonik international 2/2009

Designers of beam manipulation and imaging systems often encounter the need to fold their optical layout into a more compact form, or to redirect light to the next compon...
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Large-area applications of optical MEMS: micromirror arrays guide daylight, optimize indoor illumination

12.11.2009 - Photonik international 2/2009

Future indoor light distribution of living and office spaces will improve significantly when large-area micromirror arrays are used in conventional double-glazed windows....
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High pixel rate and dynamic range: designing customer specific CMOS sensors

12.03.2009 - Photonik international 1/2009

New applications are challenging CMOS image sensors in terms of speed, resolution and dynamic range. Meanwhile, several innovations have raised their specifications to th...
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Telecentric lenses for cameras with image sensor size larger than 1 inch

12.03.2009 - Photonik international 1/2009

The perspective-free imaging of telecentric lenses makes them suitable for measurement tasks and for inspection of three-dimensional objects, as the image scale remains c...
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This technical articel is also under the category: Optical Components

Fabrication of ultra thin liquid crystal cells for fast phase modulation in a volume holographic data storage system

12.03.2009 - Photonik international 1/2009

One approach in the development of new optical storage systems is volume holography. Here, the phase code multiplexing technique realised with liquid crystal cells can re...
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This technical articel is also under the category: Manufacturing of Optics

Tunable Fabry-Perot-filters based on InP/air-gap mirrors

12.03.2009 - Photonik international 1/2009

Tunable optical filters can cover spectral broad ranges in sensor technology and data communications either as a single element or as a group of elements arranged in an a...
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Glass ceramic – foundation for highest precision

12.03.2009 - Photonik international 1/2009

Glass ceramics with zero thermal expansion have firmly established themselves as the material of choice for mirror substrates in large telescopes. At the same time, they ...
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This technical articel is also under the category: Optical Metrology

Custom-designed lenses: how to reduce risk and improve results

12.03.2009 - Photonik international 1/2009

It is crucial that all sides in a joint development and procurement program understand and document the scope of work, expectations and responsibilities of all parties. W...
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This technical articel is also under the category: Optical Components

Fluorescence microscopy of living cells using new 515 nm DPSS lasers

12.03.2009 - Photonik international 1/2009

A novel diode-pumped solid-state (DPSS) laser emitting at 515 nm is closing an important gap in the area of compact all solid-state lasers. Especially biological applicat...
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This technical articel is also under the category: Biotechnology

Laser diodes with new wavelengths and monolithic grating stabilisation

12.03.2009 - Photonik international 1/2009

Due to their easy handling and the robust construction, high power semiconductor lasers are becoming more and more popular. In the past, the few wavelengths available and...
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This technical articel is also under the category: Biotechnology

Holographic polymer data storage medium as a security label

12.03.2009 - Photonik international 1/2009

Is it really genuine? Nowadays, security holograms are old hat even to counterfeiters. The next step in the fight against product pirates is multi-level security systems ...
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This technical articel is also under the category: Laser Technology

Red VCSELs for high-speed data communication via POF

12.03.2009 - Photonik international 1/2009

For efficient data communication via polymer optical fiber (POF) the emission wavelength of vertical cavity surface emitting semiconductor lasers (VCSELs) has to be adjus...
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This technical articel is also under the category: Fibre optics and Optical Communication

White-light interferometry for quality assurance

12.03.2009 - Photonik international 1/2009

Quality assurance requirements in the production process are becoming more and more stringent. Optical metrology – including white-light interferometry – is especially we...
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