Special Coverage

Iodine-Compatible Hall Effect Thruster
Precision Assembly of Systems on Surfaces (PASS)
Development of a Novel Electrospinning System with Automated Positioning and Control Software
2016 Create The Future Design Contest Open For Entries
Clamshell Sampler
Shape Memory Alloy Rock Splitter
Deployable Extra-Vehicular Activity Platform (DEVAP) for Planetary Surfaces
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Digital Filtering Development Tool (Quickfilter Technologies)

A new development tool from Quickfilter Technologies (Allen, TX) is designed to simplify the task of adding precision digital filtering to designs based on the Texas Instruments (TI) MSP430 ultra-low-power microcontrollers. The MSP-Mojo enables quick implementation of precision digital filtering through an embedded singlechannel precision digital filter chip, the QF1D512 Simple and Versatile FIR engine (SavFIRe™). Until now, a high level of filtering performance would have required migrating from the low-power MSP430 microcontroller to a higher-powered controller such as a digital signal processor (DSP) or a field programmable gate array (FPGA).

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Mobile IGP Chipset (VIA Technologies)

The VIA VN896 digital media mobile IGP chipset from VIA Technologies, Inc. (Fremont, CA) has been certified Vista Basicready by Microsoft® and is designed to provide users with visual clarity for notebooks and mobile devices.

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Software for Safety-Critical Systems (Aonix®)

Release v8.3 of ObjectAda Real-Time RAVEN environment for PowerPC targets from Aonix® (San Diego, CA) provides RAVEN developers with a choice between the traditional Aonix IDE for development and the AonixADT™ Eclipse IDE. AonixADT incorporates Ada-project awareness, an Ada-language sensitive editor, Ada-language compile and build capabilities, and a complete Ada debugger interface. The new release also features a large set of optimizations, fixes, and improvements into the PowerPC RAVEN technology.

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On-Chip Debugging Emulator (Renesas Technology America)

Renesas Technology America, Inc. (San Jose, CA) offers the E8a emulator, an onchip debugging emulator for developing embedded systems that use Renesas microcontrollers. It allows referencing and modification of memory, on-chip I/O, and memory contents while a program is being executed. The tool allows C source-level debugging to be carried out with a microcontroller in the M16C, H8/Tiny, or H8/Super Low Power series, operating at full speed in the system. The device also can be used as a programmer to load code into the internal flash memory of many Renesas microcontroller families. The programming voltage range is 1.8 to 5 V, and the unit features a clock oscillator to enable asynchronous communication in line with a microcontroller’s operating frequency. The case measures 92 × 42 × 15 mm.

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Thulium Puts Power Behind Eyesafe Fiber Lasers

One of the key advantages of fiber laser technology stems from the high conversion efficiency of the multimode pump radiation into high-brightness, single-mode laser light within the doped fiber lasing medium. Ytterbium-doped fiber lasers operating around 1μm often achieve around 80% pump- to-laser conversion efficiency and corresponding wall plug efficiencies over 25%, depending on the pump diodes used in the laser. As a result, high-power CW fiber lasers are more compact and require less cooling than a traditional solid-state laser of similar power.

Posted in: Articles, Features, ptb catchall, Photonics

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Reactive Solders Improve Fiber Couplers and OE Bonding

Optical and optoelectronic (OE) devices are being rapidly integrated into many facets of everyday life. From telecommunications to sensor applications, these devices are expected to perform accurately and reliably for long periods of time.

Posted in: Application Briefs, Applications, ptb catchall, Photonics

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Recirculation of Laser Power in an Atomic Fountain

Optical and electronic subsystems of a frequency standard can be simplified. NASA’s Jet Propulsion Laboratory, Pasadena, California A new technique for laser-cooling atoms in a cesium atomic fountain frequency standard relies on recirculation of laser light through the atom-collection region of the fountain. The recirculation, accomplished by means of reflections from multiple fixed beam-splitter cubes, is such that each of two laser beams makes three passes. As described below, this recirculation scheme offers several advantages over prior designs, including simplification of the laser system, greater optical power throughput, fewer optical and electrical connections, and simplification of beam power balancing.

Posted in: Photonics, Briefs, ptb catchall, Tech Briefs, Photonics

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