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Design of Long Working Distance Graded-index Fiber Lens With a Low NA for Fiber-Optic Probe in OCT Application
A fiber-optic probe for optical coherence tomography (OCT) applications typically includes a short section of graded index (GRIN) fiber fused onto a single-mode (SM) fiber. The GRIN fiber acts as a lens to focus the output of the SM fiber and to collect the reflected light from the sample. In this paper we will use the beam propagation method...
7/1/2014
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High Volume Optical Component Testing Using an Agilent Cary 7000 Universal Measurement Spectrophotometer (UMS) with Solids Autosampler
In this study, we demonstrate increased productivity and reduced cost-per-analysis with automated, unattended multi-angle R/T analysis for multiple samples of uncoated fused silica using an Agilent Cary 7000 UMS fitted with an Agilent Solids Autosampler.
5/5/2014
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Beam Expansion - Standard Concepts Re-interpreted
Everyday work in an optics laboratory would be unthinkable without beam expansion systems. They serve to optimally adjust the beam cross sections between the light sources (e.g. lasers) and the subsequent optical elements. Precise illumination of the optically effective surfaces is essential, especially for beam shaping and focusing with high...
12/23/2013

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How to Use Imaging Colorimeters for FPD Automated Optical Inspection
The use of imaging colorimeter systems and analytical software to assess display brightness and color uniformity, contrast, and to identify defects in FPDs is well established. A fundamental difference between imaging colorimetry and traditional machine vision is imaging colorimetry's accuracy in matching human visual perception for light and...
7/22/2014
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Designing with UVC LEDs: Accelerating Spectroscopic Applications in Life Sciences and Environmental Monitoring
UVC LEDs are displacing traditional broad spectrum UV lamps in a wide range of spectroscopic applications. Advances in life sciences and environmental monitoring are driving end user demand for flexible instruments to address increasingly complex analytical challenges.
7/1/2014

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Narrow Line Diode Stacks for DPAL
Diode pumped alkali metal vapor lasers (DPALs) offer the promise of scalability to very high average power levels while maintaining excellent beam quality, making them an attractive candidate for future defense applications. A variety of gain media are used and each requires a different pump wavelength: near 852nm for cesium, 780nm for rubidium,...
7/1/2014
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Improve Laser Diode Performance by Reducing Output Cable Inductance using Twisted Pair Cable
The intent of this article is to provide information regarding the performance of twisted pair cable to reduce output cable inductance. The information is based in electromagnetic theory and is supported with actual measured results which apply to a subset of laser diode applications.
7/1/2014
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High-power Visible Spectrum Diode Lasers for Display and Medical Applications - Beam Sources with Tailored Beam Quality and Spectral Characteristics
Improved beam shaping concepts allow coupling of red and blue diode lasers into smaller fibers. For medical applications beam sources with narrow wavelength distribution in the blue spectral region were developed. Modules up to 100W in a 400µm NA0.22 fiber were realized. Progress in manufacturing technologies allows for coupling of more than 25W...
6/1/2014

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Optimization of LED Lens Components using TracePro®
TracePro® is an award-winning opto-mechanical design software for layout, optimization, and analysis of illumination systems. This white paper illustrates how TracePro’s 2D and 3D optimization utilities are designed to help CAD designers without optical engineering expertise design a variety of LED optical components – including practical...
5/29/2014
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PentaVac™ Vacuum Technology
CCD imaging sensors are used extensively in high-end imaging applications, enabling acquisition of quantitative images with both high resolution and sensitivity. Some photon-starved applications require even these highly sensitive devices to be used with both long exposure times and high amounts of binning in order to obtain a detectable signal....
5/19/2014

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The Benefits of Modern CMOS Sensors in Industrial Line Scan Cameras
As sensor technology has improved in leaps and bounds, the old rule of thumb familiar to many line scan camera users has lost much of its punch. The idea that CCD = high image quality while CMOS = speed is only true anymore under very limited circumstances, since the preconception inaccurately reflects the current performance levels offered by...
4/7/2014
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Characterization to the Extremes: Terahertz materials characterization at cryogenic temperatures and high magnetic fields
In continuing pursuit of improved performance, higher processing speed, and more compact packaging, researchers spend considerable time identifying and characterizing novel and previously unexplored materials. Recently, the terahertz frequency range has emerged as a new frontier for materials science, helping to map out this unknown territory....
3/11/2014

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LED Simulation Reflector Lenses
TracePro® is an award-winning opto-mechanical design software for layout, optimization, & analysis of illumination systems. This white paper illustrates how TracePro allows users to begin a project with an initial or basic design for LED lighting systems, use software simulation prior to building hardware, and easily create complex reflector...
3/11/2014
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An Introduction to Pulsed-Current Laser Diode Drivers
The paper helps the reader to understand pulsed-current laser diode drivers and choose the right one for his or her application by explaining the basics of how they work and the components that comprise them. Ideal and real current sources are defined and explained, leading to an explanation of compliance voltage.
3/1/2014
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Thermal Imaging Detects Failures in Electronic Equipment at an Early Stage
Thermal imaging cameras are being increasingly used in electronic labs. Italian company TEST uses FLIR Thermal Imaging Cameras to detect failures in PCB boards at an early stage.
2/12/2014



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