Features

Using Fan-poled Crystals to Tune Ti:S Lasers

Titanium:Sapphire (Ti:S)-based laser systems have revolutionized ultrafast research from biological imaging to high energy physics. Ti:S has a very broad gain bandwidth (680-1080 nm) but many applications require even broader tuning ranges covering UV, visible, and longer IR wavelengths. Frequency doubling, tripling, and quadrupling extend access to the 190-540 nm range. Ultrafast optical parametric oscillators (OPOs) pumped by Ti:S lasers reach beyond 1080 nm and fill in the “Ti:S gap” (540 to 680 nm).

Posted in: Articles, Features, ptb catchall, Photonics

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Making Multicore Work With Minimal Pain Points

All major microprocessor vendors are introducing multicore architectures to deliver the latest installment of performance improvements and cost savings as required to remain competitive in the silicon marketplace. Indeed, multicore processors offer increases in processing throughput, savings in power consumption, and reductions in heat dissipation. However, some effort is required to fully exploit multicore benefits. Unfortunately, the transition to a multicore architecture is often best described by the old adage, “no pain, no gain.”

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PCI-Express Cards to Support Ares-1 Launch Vehicle

BU-67106K PCI-Express cardsData Device Corp.Bohemia, NY651-484-6544 www.ddc-web.comTo support the Ares-1, an in-line, two-stage rocket configuration topped by the Orion crew vehicle and its launch abort system, Data Device Corp. will supply NASA’s System Integration and Software Development Labs with BU-67106K MIL-STD-1553 PCI-Express cards.

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Software Gives Strength-Testing System a Lift

SolidWorks 3D Design SoftwareDassault Systèmes SolidWorks Corp.Concord, MA800-693-9000www.solidworks.comSoftware from Dassault Systèmes SolidWorks Corp. has been used by engineering service company NTE-SENER to develop a system that tests the strength of astronauts who have completed prolonged missions in zero-gravity. The device, called the Muscle Atrophy Research and Exercise System (MARES), consists of an adjustable chair with a system of pads, levers, electronics, software, and a motor that assesses a dozen muscle groups for weakness and exercise benefits.

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Machine Vision Aids Earthquake Retrofit Studies

As recent events in Haiti and Argentina have highlighted, many urban buildings in seismically active regions worldwide are in need of reinforcement to resist earthquake damage. One challenge facing earthquake retrofit activities is finding a balance between the cost and the effectiveness of the methods to be used. As part of its efforts to verify the efficiency and accuracy of new Italian regulations for the seismic assessment and repair to existing buildings, the European Centre for Training and Research in Earthquake Engineering (EUCENTRE, Pavia, Italy) used machine vision as a no-contact measurement system.

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Embedded Vision System Increases Inspection Capabilities

Food manufacturers are held to strict agency regulations regarding product quality and consistency. Repeatable visual inspections are critical to ensure consumers receive a consistent and safe product. As regulations have increased, machine vision technology has become more intelligent to follow suit — a trend that some machine builders are using to their advantage.

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Vote for NASA Tech Briefs’ 16th Annual Readers’ Choice Awards

As the year comes to a close, we’re asking NASA Tech Briefs readers to cast their votes in the annual Readers’ Choice Product of the Year Awards.Each month, the editors of NASA Tech Briefs choose a Product of the Month — a new product with exceptional technical merit and practical value for our 190,000 design engineering readers.This month, we’re inviting you to vote for the one product among those 12 Products of the Month that you feel was the most significant new product introduced to the engineering community in 2010. The product receiving the most votes will be named NASA Tech Briefs’Winners will be announced in NASA Tech Briefs and on the Web site at www.techbriefs.com.Find out more about the 12 nominated products and cast your vote by visiting: www.techbriefs.com/poy Only one vote per person will be counted. Your completed ballot must be submitted by January 21, 2011.

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