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Optical Technology Portal

Programs and Projects
Infrared optical properties of materials and components

Accurate measurements of the optical properties of materials in the infrared spectral range play an increasingly important role in the aerospace … more

Frequency Conversion Interfaces for Photonic Quantum Systems

Optical frequency conversion, in which the color of light is changed, is a process that has numerous applications in physics and technology. For … more

Color and appearance

We are developing instrumentation, standards artifacts, and measurement protocols to characterize appearance attributes including color, texture, … more

NIST Stars

NIST Stars is an Innovations in Measurement Science project to create a catalog of stars whose top-of-the-atmosphere spectral flux has an SI … more

Spectral irradiance and radiance responsivity calibrations using uniform sources (SIRCUS)

SIRCUS is a reference facility for the calibration of detectors and radiometers for spectral irradiance responsivity and spectral radiance … more

Laser Radiometry

Accurate characterization of photonic equipment is important for optical communications, medical devices, semiconductor lithography, manufacturing … more

SIRCUS facility and uncertainties

SIRCUS facility: The basic SIRCUS calibration setup is shown at the right. The output from a tunable laser is sent through an intensity … more

System for infrared spectral emittance of materials

This facility enables the measurement of spectral emittance using the direct method of radiance comparison of the sample with a blackbody … more

Complete hemispherical infrared laser-based reflectometer (CHILR)

A custom instrument, the Complete Hemispherical infrared Laser-based Reflectometer (CHILR), employs a gold integrating sphere and is used for the … 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

Missile defense transfer radiometer (MDXR)

The Missile Defense transfer Radiometer (MDXR) is a cryogenic transfer radiometer for providing calibrations of collimated infrared beams in … more

Beamline 2: Spectrometer Calibrations

Absolute irradiance calibrations based on the calculability of synchrotron radiation are performed on beamline 2. See GOES-R/EXIS and SDO as … 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


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

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

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