White Papers

DRS Technologies’ Patented Sensor Technology Revealed

05/04/2015 Learn the truth about what’s behind DRS Technologies’ competitive advantage over thermal sensor manufacturers – the patented Advanced-Absorber Microbolometer Superstructure, providing better performance through superior image quality and enhanced sensitivity. Designed by DRS’ Principal Staff Scie...

All About Aspheric Lenses

05/04/2015 The most notable benefit of aspheric lenses is their ability to correct for spherical aberration. Spherical aberration results from using a spherical surface to focus or collimate light. In other words, all spherical surfaces suffer from spherical aberration independent of alignment or manufactur...

NIST Traceable Spectral Responsivity Calibration of Photodiode Detectors

04/29/2015 All Newport optical detectors are recommended for a 12 month recalibration interval. Newport maintains an advanced calibration facility to meet all of your National Institute of Science and Technology (NIST) traceability needs. In case of the 818 and 918D Series photodiode detectors, computer-aut...

Accurate LED Source Modeling Using TracePro

04/21/2015 Modern optical modeling programs allow product design engineers to create, analyze, and optimize LED sources and LED optical systems as a virtual prototype prior to manufacturing the actual product. The precision of these virtual models depends on accurately representing the components that make ...

Tailored bar concepts for 10 mm-mrad fiber coupled modules scalable to kW-class direct diode lasers

04/17/2015 In this paper, laser modules based on newly developed tailored bars are presented. The modules allow efficient fiber coupling of more than 320 W into 10 mm-mrad or 160 W into 6 mm-mrad at one single wavelength. For further power scaling dense wavelength coupling concepts are presented which enabl...

Wavelength stabilized multi-kW diode laser systems

03/26/2015 Wavelength stabilization of high-power diode laser systems is an important means to increase the efficiency of diode pumped solid-state lasers. It also enables power scaling by dense wavelength multiplexing. We will present different wavelength stabilized diode laser systems with and without fibe...

Narrow-line fiber-coupled modules for DPAL pumping

02/23/2015 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...

Optical Isolators Improve Engraving Performance of Pulsed Fiber Lasers

12/19/2014 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. White Paper brought to you by Electro Optics Technology.

Scalable and modular diode laser architecture for fiber coupling that combines high-power, high-brightness, and low weight

11/14/2014 The demand for high-power and high-brightness fiber coupled diode laser devices is mainly driven by applications for solid-state laser pumping and materials processing. The ongoing power scaling of fiber lasers requires scalable fiber-coupled diode laser devices with increased power and brightnes...

Miniature Spectrometers for Narrowband Laser Characterization

09/18/2014 In less than 60 years, lasers have transformed from the imagined “ray gun” of science fiction into everyday reality. Used everywhere from bar code scanners to sophisticated single-molecule microscopes, lasers are powerful and cost-effective light sources for applications spanning basic research t...

Ultra-narrowband optical bandpass filters with large format and improved temperature stability

08/29/2014 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. Common issues associated with producing large format filters, maintaining temperature stability, an...

Moxtek ICE Cube™ polarizing beamsplitter

08/28/2014 The Moxtek ICE CubeTM polarizing beamsplitter (PBS) product performance is compared to a MacNeille PBS cube.  Cube beamsplitters are found in a variety of applications where matching path lengths, reduced ghosting, and limited beam shift are important.  PBS cube assemblies are found in ...

Actuator Precision Characterization

08/18/2014 Zaber’s computer-controlled positioning devices use stepper motors, which allow accurate position control without requiring an encoder. In order to get the best precision from your positioning devices, it is important to understand the positioning mechanisms and their limitations. The purpose of ...

High-power visible spectrum diode lasers for display and medical applications – beam sources with tailored beam quality and spectral characteristics

07/31/2014 In this paper we report on the further progress of fiber coupled high power diode lasers in the visible spectral range with regard to beam quality and spectral characteristics. Improved beam shaping concepts allow coupling of red and blue diode lasers into smaller fibers. For medical applications...

Improve Laser Diode Performance by Reducing Output Cable Inductance using Twisted Pair Cable

06/27/2014 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. This White ...
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