Photonics/​Optics

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...

Edmund Optics (Barrington, NJ) has increased the company’s capacity to make complex coatings with more than 100 layers by adding a new 45-in. diameter Vacuum Process Technology coating chamber. The coatings can be applied to many categories of catalog parts, including polarizers, laser mirrors, short wave pass and...

According to a proposal, a phenomenon associated with excitation of quasi- particles in certain superconducting quantum devices would be exploited as a means of detecting photons with exquisite sensitivity. The phenomenon could also be exploited to perform medium-resolution spectroscopy. The proposal...

A prototype external-cavity diode laser (ECDL) has been developed for communication systems utilizing dense wavelength-division multiplexing (DWDM). This ECDL is an updated version of the ECDL reported in “Wavelength-Agile External-Cavity Diode Laser” (LEW-17090), NASA Tech Briefs, Vol. 25,...

Application Designer v3.0 from Liekki (Lohja, Finland) is a simulation and design software environment for fiber lasers and amplifiers with new transient analysis capability. The software provides the ability to simulate the dynamic regime and transients of active components and new components such as time-dependent...

SensL (Blackrock, Ireland) has developed the PCDMini, a miniature photon counting system for applications in biosciences, astronomy, and remote sensing. The PCDMini is a printed circuit board with hermetically sealed detector. The basic unit features quenching architecture and is available with a number of optional snap-on...

Improved quantum-cascade lasers (QCLs) are being developed as electrically tunable sources of radiation in the far infrared spectral region, especially in the frequency range of 2 to 5 THz. (Heretofore, the wavelengths of QCLs have been adjusted by changing temperatures, but not by changing...

A powerful high-performance computer program for simulating and analyzing adaptive and controlled optical systems has been developed by modifying the serial version of the Modeling and Analysis for Controlled Optical Systems (MACOS) program to impart capabilities for multithreaded...

A dual-pulse laser (DPL) technique has been demonstrated for generating laser-induced sparks (LIS) to ignite fuels. The technique was originally intended to be applied to the ignition of rocket propellants, but may also be applicable to ignition in terrestrial settings in which electric igniters may not be suitable. Laser...