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Articles: Photonics/Optics
The measurement of gases associated with industrial processing/emissions monitoring has become increasingly important as the need to improve efficiencies in process control has increased, and...
Products: Photonics/Optics
OPTRA (Topsfield, MA) offers a laser event recorder that measures, characterizes, and documents laser exposures in support of dosimetry requirements for the protection of personnel working with, or who could potentially be...
Who's Who: Photonics/Optics
Kim Ballard, Computer Engineer, Electrical Design Branch
Engineers at Kennedy Space Center (KSC) developed the Laser Scaling and Measurement Device for Photographic Images – a camera attachment that uses laser technology – to assist scientists in determining the exact scale of any damages to the Space Shuttle's external tank when viewing...
Briefs: Photonics/Optics
An apparatus denoted a laser image contrast enhancement system (LICES) increases the contrast with which one can view a target glowing with blackbody radiation (a white-hot object)...
Briefs: Photonics/Optics
Portable Airborne Laser System Measures Forest-Canopy Height
The Portable Airborne Laser System (PALS) is a combination of laser ranging, video imaging, positioning, and data-processing subsystems designed for measuring the heights of forest canopies along linear transects from tens to thousands of kilometers long. Unlike prior laser ranging...
Briefs: Photonics/Optics
Optical-Electrical-Optical (OEO) wavelength translation (WT) based on small-form-factor pluggable (SFP) transceivers is meeting with increased...
Briefs: Photonics/Optics
An advanced computer code is undergoing development for numerically simulating laser cooling and trapping of large numbers of atoms. The code is expected to be useful in...
Briefs: Photonics/Optics
Optoelectronic sensors and magnetic actuators have been developed as parts of a system for controlling the relative position and attitude of two massive optical tables that float on...
Briefs: Photonics/Optics
An improved version of an optoelectronic apparatus for measuring distances of the order of tens of feet with an error no larger than a small fraction of an inch (a few millimeters) has...
Briefs: Imaging
Theodolite With CCD Camera for Safe Measurement of Laser-Beam Pointing
The simple addition of a charge-coupled-device (CCD) camera to a theodolite makes it safe to measure the pointing direction of a laser beam. The present state of the art requires this to be a custom addition because theodolites are manufactured without CCD cameras as standard or...
Briefs: Photonics/Optics
Using Laser Diodes to Characterize Force and Pressure Sensors
A proposed method of characterizing microphones and other pressure and force sensors would exploit the temporally varying forces of impingement of amplitude-modulated light beams from inexpensive laser diodes. What makes the method likely to be practical is the surprising fact that these...
Briefs: Photonics/Optics
Improved fiber-optic transducers, denoted tiger fibers, have been proposed for sensing volatile compounds. Tiger fibers are so named because, as described below, their sensitive portions...
Briefs: Photonics/Optics
An optoelectronic system discussed herein measures the state of alignment (SOA) of an object under test in four of its six degrees of freedom (DOFs). This system was originally...
Briefs: Photonics/Optics
Efforts are under way to develop a technique of noncontact acousto-ultrasonic testing in which (1) a pulsed laser beam excites ultrasonic waves in a plate specimen and (2) the ultrasonic...
Briefs: Photonics/Optics
Sponsored by a NASA Small Business Innovation Research (SBIR) Phase II contract, MetroLaser, Inc., has developed a novel, compact and low-cost laser Doppler vibrometer (LDV) under the...
Briefs: Photonics/Optics
The Boeing Company has developed fiber-laser-amplifier technology representing the latest in diode-laser-pumped systems, providing high output power, high brightness, tunability, frequency-doubled...
Briefs: Photonics/Optics
Sensors made largely of commercially available optical and electronic components are being developed for use in measuring small horizontal displacements of payloads suspended below...
Briefs: Test & Measurement
Laser Doppler velocimetry (LDV) systems have been used for a number of years in field and laboratory applications. The normal LDV system consists of a two-color, four-beam...
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