Photonics/Optics

Digital Binoculars

Ricoh Americas Corporation (Malvern, PA) recently unveiled the RICOH NV-10A digital binoculars, which for the first time can penetrate fog, smoke, rain, and sand to provide a crisp, clear image even at night. The RICOH NV-10A enhanced binoculars enable marine, military, rescue, firefighting, law enforcement, homeland security, and other professional users to push a button on the binoculars and clarify, brighten, and sharpen images. The PENTAX Atmospheric Interference Reduction (PAIR) technology reintroduces color that would otherwise be obscured.

Posted in: Products, Products, Photonics

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UV Laser

Spectra-Physics® (Santa Clara, CA), a Newport company, has introduced Talon 355-20, a high UV output power addition to its Talon family of Q-switched diode-pumped solidstate (DPSS) lasers. The new laser delivers >20 W UV power, wide-repetition-rate range of 0 to 500 kHz, and excellent beam profile and stability.

Posted in: Products, Products, Photonics

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High Performance, 1.5 µm, CW and Pulsed Fiber Lasers

There has been increasing interest recently in high power pulsed and CW fiber lasers sources in the 1.5 micron region. Operating at this wavelength has an advantage in eye safety when compared with 1 µm laser sources and also coincides with a window of atmospheric transparency.

Posted in: Tech Talks, Lasers & Laser Systems

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Domain-Engineered Magnesium-Oxide-Doped Lithium Niobate for Lidar-Based Remote Sensing

Current work provides a path to the development of compact, single-frequency, spectroscopically useful laser sources. Goddard Space Flight Center, Greenbelt, Maryland There are several frequency conversion applications associated with lidar-based remote sensing that would benefit from the use of high-quality, complex (i.e., chirped, multi-section, or otherwise modulated) domain-engineered magnesiumoxide- doped lithium niobate (MgO:LN). While congruently melting lithium niobate (CLN) has been explored in detail over the last decades, it is known to be highly susceptible to photorefractive damage, which has limited the achievable performance of some QPM-assisted (quasi phase matching) structures that are commercially available. The demand for high-performance engineered nonlinear optical (NLO) materials, in terms of power handling, efficiency, conversion bandwidth, and accessible wavelength range, has driven the development of high-quality, large-area wafers of MgO:LN. While commercial outlets for these materials exist, there is still a need to expand the achievable performance of these structures (i.e. larger aperture bulk structures, higher efficiency waveguide structures, and implementation of sophisticated poling designs that increase achievable conversion bandwidths).

Posted in: Briefs, Tech Briefs, Photonics

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Fiber-Optic Sensor for Aircraft and Structure Lightning Measurement

Langley Research Center, Hampton, Virginia An optical-fiber sensor based on Faraday Effect was developed for measuring total lightning current. Designed for aircraft installation, it is lightweight, non-conducting, structure conforming, and is immune to electromagnetic interference, hysteresis, and saturation. It can also be used on windmills, lightning towers, and can help validate lightning detection network measurements.

Posted in: Briefs, TSP, Tech Briefs, Photonics

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Hyperspectral Sensing for Defense and Security Applications

The successful exploitation of hyperspectral imaging sensors depends on the availability of accurate and complete spectral signature libraries. Coupled with the appropriate spectral signature library, images collected with hyperspectral sensors provide the means to survey large areas identifying and characterizing materials, detecting a wide range of camouflaged targets, and detecting disturbed surfaces.

Posted in: Articles, Features, Photonics

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3D Machine Vision Using Laser Triangulation

Applications for 3D machine vision are rapidly expanding in a variety of industries for several reasons. The first is that vision systems can lower production costs by increasing yields and/or reducing scrap product and wasted raw material. One example of this would be extruded products from various materials (rubber, plastic, metal), where it’s vital to know as soon as the process goes out of specification.

Posted in: Application Briefs, Articles, Applications, Photonics

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