Heftarchiv - Photonik

Sonderheft: LASER+PHOTONICS 2017

Cover
Bild: AT-Fachverlag
Editorial

Let‘s talk about light

Light is arguably one of the most important things in the universe. For one, there would be no life without light. And it is fascinating to look at the stars, whose light helps us to understand where and what they are. Seeing the wonders of the world is one thing; illuminating them for others is another. In many ways, light has helped mehr...

Articles

Manufacturing

Nanotexturing: Controlling surface reflectivity

Nanoscale surface treatment reduces reflectance comparable to thin-film coatings. Random antireflective nanostructuring (RAR) also offers ease of manufacturability. mehr...

Metrology

Precise color recognition under industrial operating conditions

Color recognition is a well-established method for automatization of industrial processes. Optical sensors therefor must comply with particular requirements. mehr...

Components

Integrated photonics: frequency combs out of silicon nitride

A new commercialized manufacturing process for waveguide structures opens up unique paths in integrated photonics, such as silicon nitride micro-resonator-based optical frequency combs. mehr...

Laser

Beam shaping makes glass cutting more efficient

A combination of special focusing optics and a novel method of material modification, enable the process of cleaving thin hardened and non-hardened display glass panels one hundred times faster. mehr...

Laser

Looking deeper with three-photon microscopy

Recent advances in laser technology support the growing neuroscience interest in three-photon microscopy for live sample imaging and stimulation. mehr...

Microscopy

Cell analysis re-defined

A newly developed Raman microscopy system combines noninvasive cell analysis under physiologic conditions with a data analysis using less than hundred measured cells. mehr...

Metrology

High-speed 3D measurements

Using the GOBO (GOes Before Optics) projection principle, a system for the fast recording of 3D data has been developed. mehr...

Laser

As far as the stacks will carry us

Numerous industrial processes are performed today with the help of diode lasers. Only physical limits could slow down its development - but they are a long way from being reached. mehr...

Laser

Artificial laser stars for next generation telescopes

A narrow-band and tunable high-power laser system enables the use of adaptive optics at astronomical telescopes and is key for next-generation large-scale telescopes on the ground. mehr...

Metrology

BioLayer Interferometry for label-free protein analysis

BioLayer Interferometry for label-free real-time analysis of biomolecular interactions is increasingly establishing itself in the biopharmaceutical drug development and manufacturing sectors. mehr...

Manufacturing

Ion Beam Sputtering (IBS)

The IBS (Ion Beam Sputtering) coating method, despite moderate coating rates, is suited for serial production of high-quality laser optics. mehr...

Components

RGB projector with microstructured beam shaping optics

A projector with multi-color laser light and four ultra-precise illumination freeforms on one substrate has been built. mehr...

Components

Piezo actuators on ultrathin glass for varifocal lenses

Piezo sheets with single-sided contacts enable bending actuators with non-conductive passive layers, as they are used in deformable fluid lenses with glass membranes. mehr...

Image Processing

4D-tomography with MHz-OCT: Optics goes big data

Thanks to a new laser technology, OCT imaging speed can be increased by more than one order of magnitude. This enables real-time video-rate investigation of three-dimensional sample structure. mehr...

Manufacturing

Ultra-precision grinding: When glass behaves like ice-cream

When manufacturing aspheres, extensive polishing processes are often needed to achieve highest precision. A ultra-precision grinding process reduces the amount of time spent on polishing considerably. mehr...

Metrology

Optical vibration measurement using laser Doppler vibrometry

Understanding vibrating systems in nature and technology requires sophisticated, flexible, and ideally non-invasive measurement tools. Here, non-contact laser vibrometry proves to be the highest performing method. mehr...

Components

Freeform surfaces revolutionize optical systems

Smaller, lighter, more efficient – freeform optical surfaces without rotational symmetry enable the implementation of completely new concepts for optical systems. mehr...

Microscopy

Lens-free microscopy tailored to many applications

Being small, conceptually simple, fast and relatively cheap, lens-free microscopy enables an abundance of applications to which traditional microscopes are less amenable. mehr...

Spectroscopy

Biomolecular analysis using the bin-time correlation method

A new fluorescence fluctuation spectroscopy method combines the advantages of fluorescence correlation spectroscopy with those of brightness-based methods for high-precision studies. mehr...

Microscopy

Dynamic diffractive optics in laser scanning microscopy

The use of dynamic diffractive optical elements allows for flexible optical microscopy designs. Spatial Light Modulators with liquid crystal pixels enable three-dimensional focus arrangements and optimal laser power utilisation. mehr...

Spectroscopy

Advances in pharmaceutical analysis and quality control

An advanced optical filter technology now enables measurement of Raman signals into the low frequency/THz regime, thus revealing the structural signature of a compound. mehr...

Metrology

Wavefront-based alignment: properties and precision

Wavefront-based alignment is an elegant approach to high-precision positioning. The system status can be evaluated in one single measuring operation and suitable correction actions can be derived. mehr...

Microscopy

Highly versatile miniature ­epi-illuminator

Advanced microscopy techniques often require custom built systems or expensive additions to commercial microscopes. A novel device enhances any microscope without the need of further equipment. mehr...

Metrology

LED: efficiently and precisely measuring power and irradiance

In many industries, LEDs are replacing broadband light sources. For efficient LED quality testing in the production process, new measurement techniques are needed. mehr...

Microscopy

Innovative nanotechnology for optical microscopy

A spin-off of the Technische Universität Braunschweig has developed nano-scaled rulers as calibration and test tools for the microscopy market. mehr...

Spectroscopy

Coherent hemodynamics spectroscopy

Quantified assessments of cerebral perfusion can be derived from non-invasive near-infrared measurements using a new method. mehr...

Microscopy

How to transform your smartphone into a microscope

Modern mobile phones can be used for diagnostic purposes with the aid of integrated complex optic modules. mehr...

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