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Optical Technology Portal

Programs and Projects
Photometry

The purpose of photometry is to measure light in a way that takes the sensitivity of human visual system into account. While radiometry measures … more

In Situ Measurement Techniques

Synthetic cell membrane constructs allow the simplification and complete control of a more complicated cellular system, as well as the … more

State-resolved Biomolecular Spectroscopies

Sensitive and fully state resolved spectroscopic methods in the terahertz (THz) and ultraviolet (UV) regions are being developed to investigate … more

Terahertz Imaging and Sources

Imaging in the terahertz frequency range enables the detection of concealed weapons and other contraband (e.g., explosives under clothing) without … more

Laser Radiometry

Accurate characterization of optoelectronic equipment is important to applications such as optical telecommunications, medical devices, materials … more

Detector metrology

High performance radiometers with selected optical detectors are being designed, characterized, and calibrated in the Optical Sensor Group for the … more

Instruments
Continuous-wave terahertz spectrometer

The continuous-wave terahertz spectrometer makes use of two near-infrared lasers. The first laser is a fixed-frequency cw ring Ti:Saph laser … more

Primary optical watt radiometer (POWR) facility

POWR is a cryogenic electrical substitution radiometer that serves as the Nation's optical power reference. more

Lunar spectro-radiometer

Design of the lunar irradiance instrument is based on commercially available spectrographs. These spectrographs can be stable and sub-components … more

Infrared reference integrating sphere (IRIS)

An integrating-sphere system has been designed and constructed for the measurement of multiple optical properties in the infrared spectral range. … more

Synchrotron Ultraviolet Radiation Facility SURF III

The Synchrotron Ultraviolet Radiation Facility SURF III is operated by the National Institute of Standards and Technology NIST as a stable light … more

Bidirectional optical scattering facility

Goniometric optical scatter instrument (GOSI) The bidirectional reflectance distribution function (BRDF) quantifies the angular distribution of … more

Software
jb95 Spectral fitting program

A graphical user interface program, JB95 , based on a Windows 95 © API platform has been written in the C programming language to aid in the … more

SCATMECH

SCATMECH is an object-oriented C++ class library developed to distribute models for light scattering applications. Included in the library are … more

Modeled integrated scattering tool (MIST)

The MIST program has been developed to provide users with a general application to model an integrated scattering system. The program performs an … more

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