Laser Focus World Webcasts


Upcoming Webcasts

Understanding Polarization and Optical Coatings

Date 08/27/2015

Light is an electromagnetic wave, but, at optical frequencies, it is its electric field that interacts with materials, with the direction of the electric field (polarization) at times as important as its magnitude. The state of polarization can be changed by a coated surface. Although sensitivity of a coating performance to polarization is a complication that can lead to strange and surprising properties, nevertheless it is completely predictable, provided there is adherence to a consistent set of definitions and conventions. Sensitivity to polarization can be used to advantage in components designed to manipulate it in some way; polarizers, analyzers, and retarders are typical examples. Elimination of polarization sensitivity can be more difficult than enhancement, but there are techniques that can help, and polarization maintenance is a useful performance parameter that can be used in assessing the performance of a design. This webcast, sponsoredby Deposition Sciences, Edmund Optics, Moxtek Optics, and Optimax, will help the optical designer learn to manipulate the polarization of light to the best advantage.

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On Demand Webcasts

In-Situ Infrared Sensing using Calibration-Free Scanned-WMS Laser Absorption Spectroscopy

07/15/2015

This presentation, sponsored by Wavelength Electronics and ILX Lightwave, will discuss the range of sensing capabilities offered by scanned-WMS in the near- and mid-infrared and provide several examples of implementation by the Hanson Research Group demonstrating these capabilities in practical aerospace, energy, and health applications.

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Wave Optics Simulations

07/02/2015

An add-on to COMSOL Multiphysics®, the Wave Optics Module offers capabilities for modeling optical phenomena. The innovative beam envelope method is among the available techniques, and can be used to simulate optical systems with geometries substantially larger than the wavelength. In this webinar, we will discuss applications such as metamaterials, scattering by nanoparticles, directional couplers, and nonlinear optical waveguides. There will also be a demonstration and a Q&A session.

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Mid-infrared lasers in remote chemical sensing – from stand-off detection to atmospheric sounding

06/23/2015

In this webcast, Gerard Wysocki of MIRTHE will discuss the unique remote-sensing capabilities enabled by modern mid-infrared (mid-IR) lasers and novel spectroscopic techniques. Examples will include passive long-range remote sensing instrumentation and active stand-off spectroscopic sensors. Passive remote-sensing instruments show great potential for astronomy and planetary remote sensing applications, while stand-off detection using quantum cascade lasers (QCLs) enables sensitive and baseline-free molecular sensing of, for example, atmospheric nitrous oxide (N2O). Performance in the lab and in the field will be presented.

Please join us for this webcast sponsored by Hamamatsu Corporation.

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Lens Design – Tools for designing manufacturable aspheres for complex optical assemblies

05/26/2015

Designing aspheres that may be successfully fabricated and tested can be a frustrating experience. The range of possible aspheres is much larger than the range of those that may be fabricated and tested with available tools. There is often little performance penalty involved in keeping aspheres within range, but doing so is difficult.  In this webcast, sponsored by LaCroix Optical, JENOPTIK will describe tools and approaches for designing aspheres that are suitable for MRF polishing and interferometric testing with sub-aperture stitching interferometers.

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Femtosecond Lasers – Getting the Photons to the Work Area

05/05/2015

Ultrashort-pulse lasers, both picosecond and femtosecond, are now available from a large number of manufacturers, with new players entering the field at a rapid pace. These lasers, which only a few years ago were only cool toys in the research lab, are now being used extensively in production environments, allowing the microprocessing of materials and in applications that are not possible using longer pulse length lasers. This webinar will focus on Femtosecond lasers in particular and also on clever ways of delivering the photons to the work piece.

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