Photonics & Imaging

Photonics/​Optics

Explore the latest technical briefs and product breakthroughs in photonics and optics. Resources include breakthroughs in lasers, laser systems, fiber optics, optical components, and photonics.

Products: Photonics/Optics
Solid State Laser

The Kyma line of solid state lasers from Melles Griot (Carlsbad, CA) offers improved stability and performance by requiring fewer parts than diode pumped solid state (DPSS) lasers. Kyma technology supports...

Products: Photonics/Optics
Fiber Pump Laser

Bookham (San Jose, CA) has introduced a high-power, uncooled multimode pump laser module for fiber laser pumping that combines high power with high reliability and stable performance. The new multimode pump laser...

Products: Photonics/Optics
LED Chips
(Durham, NC) has released two new LED chips: the MegaBright 290 Gen 2 and the RazerThin 230. The MegaBright 290 Gen 2, a high-brightness chip, is 30 percent brighter and uses 8 percent less power than the chip it replaces. This new chip is targeted for digital camera, camera phone flash, and LCD backlighting applications, where brightness...
Products: Photonics/Optics
Fiber Laser Design Software

Liekki Application Designer v3.0 from Liekki (Way Gambrills, MD) is a simulation and design software environment for fiber lasers and amplifiers with new transient analysis capability. Liekki’s v3.0...

Products: Photonics/Optics
Progressive Scan Camera

JAI’s (San Jose, CA) CV-A436 machine vision camera uses the latest generation of VGA resolution progressive scan 1⁄3-in. imager that allows the compact head size of 17 mm (diameter) and 46 mm (length). The...

A standalone, handheld, through-wall radar unit is under development to provide three-dimensional feedback on the location and movement of people inside buildings. Applications include military...

Internal heating is a key issue for vertical cavity surface emitting lasers (VCSELs), a semiconductor micro laser diode that emits light in a cylindrical...

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...

A tool has been developed for the special purpose of inserting the terminus of an optical fiber in a cable connector that conforms to NASA Specification SSQ-21635. What prompted the...

A multilayer dielectric device has been fabricated as a prototype of a low-loss, low-distortion, transmissive optical phase modulator that would provide as much as a full cycle of...

The beamviewer is an optical device designed to be attached to a charge-coupled-device (CCD) image detector for measuring the spatial distribution of intensity of a beam of light (the...

Briefs: Photonics/Optics
Second-Generation Multi-Angle Imaging Spectroradiometer

A report discusses an early phase in the development of the MISR-2 C, a second, improved version of the Multi-angle Imaging Spectro Radiometer (MISR), which has been in orbit around the Earth aboard NASA's Terra spacecraft since 1999. Like the MISR, the MISR-2 would contain a "pushbroom"...

A design concept for a proposed airborne or spaceborne free-space optical-communication terminal provides for simultaneous reception of signals from multiple other...

Variable shadow screens have been proposed for reducing the apparent brightnesses of very bright light sources relative to other sources within the fields of view of diverse imaging optical...

An improved method of fabrication of Bragg gratings in optical fibers combines the best features of two prior methods: one that involves the use of a phase mask and one that involves...

Infrared (IR) detectors characterized by a combination of (1) high-quantum-efficiency photoexcitation of inter-valence-subband transitions of charge carriers and (2) high-mobility...

Optoelectronic pattern-recognition systems (optical encoders)for measuring positions of objects of interest at temperatures well below or well above room temperature are undergoing...

Tunable optical true-time delay devices that would exploit electromagnetically induced transparency (EIT) have been proposed. Relative to prior true-time delay devices (for example,...

Features: Photonics/Optics
Nano-Optics

Nano-optics is a valuably novel class of technology that takes advantage of light’s unique interaction with subwavelength, nano-scale patterned materials, and nanotechnology-enabled fabrication methods to create a broadly...

A holographic technique has been devised for generating a visible display of the effect of exposure of a photorefractive crystal to γ-rays. The technique exploits the space charge that results...

A digital averaging phasemeter has been built for measuring the difference between the phases of the unknown and reference heterodyne signals in a heterodyne laser interferometer....

A prototype improved external cavity laser (ECL) was demonstrated in the second phase of a continuing effort to develop wavelength-agile lasers for fiber-optic communications and...

Briefs: Photonics/Optics
Optoelectronic Instrument Monitors pH in a Culture Medium

An optoelectronic instrument monitors the pH of an aqueous cell-culture medium in a perfused rotating-wall-vessel bioreactor. The instrument is designed to satisfy the following requirements:

Briefs: Photonics/Optics
Laser Ablation of Materials for Propulsion of Spacecraft

A report describes experiments performed as part of a continuing investigation of the feasibility of laser ablation of materials as a means of propulsion for small spacecraft. In each experiment, a specimen of ablative material was mounted on a torsion pendulum and irradiated with a laser...

A technique that involves the use of thermoformed plastics has been developed to enable the design and fabrication of ultra-lightweight structural components and mirrors for use in...

An improved method of dot-projection photogrammetry and an extension of the method to encompass dot-projection videogrammetry overcome some deficiencies of dot-projection...

Briefs: Photonics/Optics
Coastal Research Imaging Spectrometer

The Coastal Research Imaging Spectrometer (CRIS) is an airborne remote sensing system designed specifically for research on the physical, chemical, and biological characteristics of coastal waters. The...

An improved method of growing high-quality InAs quantum dots embedded in lattice-matched InGaAs quantum wells on InP substrates has been developed. InAs/InGaAs/InP quantum dot...

Briefs: Photonics/Optics
Lightweight, Flexible, Thin, Integrated Solar-Power Packs

Lightweight, flexible, thin, one-piece, solar-power packs are undergoing development. Each power pack of this type is a complete, modular, integrated power-supply system comprising three power subsystems that, in conventional practice, have been constructed as separate units and connected...

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