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WHITE PAPERS
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The Measurement of High Optical Densities (up to 8 Abs) in the Near-Infrared
The optical densities of various materials used in the manufacture of laser safety eyewear have been determined in the NIR. The lens materials were measured over wavelength ranges corresponding to the laser wavelengths for which the eyewear was designed (InGaAs, 980 nm and Nd:YAG, 1064 nm). Prior to measurement, a variety of filters of known...
4/3/2013
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Optical Isolators Improve Engraving Performance in Pulsed Fiber Lasers
The deleterious effects of back reflections on pulsed fiber lasers used in marking and engraving are well-known. This paper looks at some of those conditions and their impact on optical isolator performance and marking and engraving quality.
1/5/2015
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Development of a Virus Biosensor for the Detection of Single Virus Particles - Focussing specifically on the human Norovirus
Recently, biosensors for the detection of viral pathogens have attracted a lot of interest. The rapid identification of the presence of a virus in contaminated food or water or in a patient's sample is a prerequisite to efficiently counteract viral outbreaks, epidemics or bioterrorism.
8/20/2014

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Methods for Measuring Flat Panel Display Defects and Mura as Correlated to Human Visual Perception
Human vision and perception are the ultimate determinants of display quality, however human judgment is variable, making it difficult to define and apply quantitatively in research or production environments. However, traditional methods for automated defect detection do not relate directly to human perception. Accurately correlating human...
3/2/2015
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Narrow-Line Fiber-Coupled Modules for DPAL Pumping
A new series of fiber coupled diode laser modules optimized for DPAL pumping is presented, featuring greater than 400W from a 600µm core fiber of 0.22NA. Addressing one of the key challenges in DPAL pumping, the modules achieve a spectral width of <<0.1 nm and wavelength tunability of +/- 0.15 nm. A limiting factor in the reduction of the spectral...
3/1/2015

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UVSCALE Visualizes UV light amount distribution by color density
One side of the base film has a UV light sensitive layer, with the opposite side having a white-colored layer. The light sensitive layer changes color according to the amount of UV light it receives, so the amount of light distributed on the exposed surface is easily seen by observing a light sensitive layer and white-colored layer are attached to...
2/18/2015
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Vision Research High-Speed Digital Cameras Instrumental in Teaching Construction Site Safety
There is a good reason construction workers are asked to wear hard hats, gloves, safety goggles, and various other safetyequipment while on the job; construction sites are dangerous. Filled with heavy and sharp objects, platforms of varying heights, flying sparks and debris, and a number of other potentially dangerous elements, it’s no wonder so...
2/6/2015
- Vision Research Inc., Phantom Digital High-Speed Cameras
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Ultra-Narrowband Optical Bandpass Filters with Large Format and Improved Temperature Stability
Hard coated ultra-narrowband optical filters made using modern plasma processes offer much improved transmission, temperature stability and out of band blocking as compared to legacy soft coatings. These filters are used in optical systems as diverse as LIDAR (light detection and ranging), Doppler shift detection of plasma velocity, laser cleanup,...
1/14/2015

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Centration Measurement, Lens Alignment and Assembly of Infrared Lenses
The whitepaper describes special considerations for the measurement of infrared lenses and gives examples for the measurement, alignment and assembly of different kinds of infrared lenses.
1/5/2015
- TRIOPTICS GmbH
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System Integration of Fiber Lasers and Its Effects on Laser Quality
The quality of a laser is usually only measured on the laser source. But most laser sources are integrated into a system being used for a specific process or application. This means the laser light can interact with different components, each of which can have an effect on its quality. This paper looks at specific examples of beam profiles and...
1/5/2015

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UV Curing of Fiber Optic Coating
Current optical fiber manufacturing processes use UV lamp systems for curing protective coatings to the glass fiber. These systems suffer from low efficiency, high maintenance costs and environmental concerns. UV LED curing systems provide a compelling alternative because of their high efficiency, long lifetime, and low cost of operation....
12/1/2014
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Time-Lapse Imaging with Lamp and LED – Stability vs Repeatability
Advancements in LED technology today enable LEDs to provide a compelling alternative to lamps for fluorescence microscopy illumination and have become increasingly popular. This article discusses the differences in stability between Lamps and LEDs, and explains the importance of repeatability versus stability when comparing images taken between...
11/17/2014

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Absorption / Transmission / Reflection Spectroscopy
Ultraviolet Visible Near-Infrared (UV-Vis-NIR) spectroscopy is useful to characterize the absorption, transmission, and reflectivity of a variety of technologically important materials, such as pigments, coatings, windows, and filters. This more qualitative application usually requires recording at least a portion of the spectrum for...
11/6/2014
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Hyphenated Raman - OCT Clinical Diagnosis of Skin Cancers
Hyphenated optical techniques combine different measurement modalities in the one instrument to provide a more comprehensive set of complimentary information for carrying out medical diagnosis. This note describes how Raman Spectroscopy (RS) and Optical Coherence Tomography (OCT) have been combined into one instrument to provide a portable machine...
11/6/2014
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Simultaneous Intensity Profiling of Multiple Laser Beams Using the BladeCam-XHR Camera
There are several applications where the parallel processing of multiple beams can significantly decrease the overall time needed for the process. Intensity profile measurements that can characterize each of those beams can lead to improvements in that application. If each beam had to be characterized individually, the process would be very time...
9/26/2014



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