Photonics

Using CVD Diamond to Cool Hot Devices

Increasing power densities and decreasing transistor dimensions are hallmarks of many of today’s semiconductor devices, including high-voltage power transistors, laser diodes, and RF power amplifiers. GaN devices, such as power converters for photovoltaic cells and cellular base-station power amplifiers, are further enabling higher power densities in smaller die sizes. Both trends are significantly increasing the thermal management challenge within the chip and surrounding package or module.

Posted in: Applications, Photonics, Application Briefs

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UV-Visible-NIR Microspectrophotometer

CRAIC Technologies (San Dimas, CA) has introduced an automated version of the 20/30 Perfect Vision™ UV-visible- NIR microspectrophotometer. This system is designed to be fully programmable with touchscreen controls so that it can automatically analyze microscopic samples with UV-visible-NIR spectroscopy and microscopy. Imaging and spectroscopic analysis of samples can be done by absorbance, reflectance and fluorescence from the deep UV to far into the near infrared.

Posted in: Products, Photonics

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Touch-Operated Portable Spectrometer

Announced as the world’s first smart, touch-enabled portable spectrometer, the GL SPECTIS 1.0 Touch Mini from Saelig Company, Inc. (Fairport, NY) includes WiFi, Bluetooth, USB, and SD card interfaces in a handheld unit that operates for up to 6 hours on a battery charge. The Android-based GL Spectis 1.0 Touch Mini is easy to navigate and comes preconfigured, and individually calibrated for fast, reliable results.

Posted in: Products, Photonics

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Hollow-Core Fiber

OFS (Avon, CT) has developed a new Hollowcore Fiber (HCF) as part of the DARPA-funded Compact Ultra Stable Gyro for Absolute Reference (COUGAR) program, led by Honeywell International, Inc. The breakthrough fiber employs an air filled core surrounded by glass webbing. Hollow-core fibers allow light to propagate through free space rather than a solid glass core, making them an ideal waveguide in theory.

Posted in: Products, Photonics

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Laser Sensors

Ophir Photonics (North Logan, UT) has announced the newest member of the BeamTrack family, the FL250A-BB-50-PPS. BeamTrack is a unique series of thermal detectors that combine multiple functions in one device: laser power, energy, beam position, and beam size. The sensors also provide information on beam centering and wander, all in a compact unit the size of a single function sensor of the same power level. The first BeamTrack detectors – measuring 3W, 10W, 50W, and 150W – were introduced in 2012.

Posted in: Products, Photonics

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CW Laser Diode Driver

A new laser diode driver, iC-HT, from iC Haus (Bodenheim, Germany) permits microcontroller-based activation of laser diodes in CW mode. With this device, laser diodes can be driven by either the optical output power (using APC), the laser diode current (using ACC), or a full, controller-based power control unit. The maximum laser diode current per channel is 750 mA. Both channels can be switched in parallel for particularly high laser diode currents of up to 1.5 A. A current limit can also be configured for each channel.

Posted in: Products, Photonics

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High-Power Single-Mode 2.65-μm InGaAsSb/AlInGaAsSb Diode Lasers

This innovation is useful for targeted gas detection instruments in environmental monitoring, safety, quality control, and fundamental science applications. Central to the advancement of both satellite and in-situ science are improvements in continuous-wave and pulsed infrared laser systems coupled with integrated miniaturized optics and electronics, allowing for the use of powerful, single- mode light sources aboard both satellite and unmanned aerial vehicle platforms.

Posted in: Photonics, Briefs

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