Tech Briefs

Photonics & Imaging

Access our comprehensive library of technical briefs on photonics and imaging, from engineering experts at NASA and major government, university, and commercial laboratories.

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Briefs: Photonics/Optics
Program for Analysis of a Complex Optomechanical System
The IMOS computer program contains subprograms that, collectively, provide a unique capability for multidisciplinary analysis of a system represented by a combination of mathematical models of structural (mechanical), control, thermal, and optical characteristics. One example of such a system...
Briefs: Photonics/Optics
Thermal Lens Spectrometer Yields High Sensitivity
Thermal lens spectrometry is a highly sensitive method for detecting very small quantities of material by the absorption of light from a laser source. It takes advantage of the thermal lens effect to measure the absorption spectrum of a sample. This invention utilizes an optical parametric...
Briefs: Electronics & Computers
Cross-diffraction gratings have been proposed to provide optical coupling to quantum-well infrared photodetectors (QWIPs) in focal-plane arrays (FPAs). The cross-grating coupling scheme is...
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Briefs: Electronics & Computers
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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