U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Physics

Spectroscopy

Patents

Searches Patent Title, Abstract, Body, Technology Type, and NIST Inventors
Displaying 1 - 6 of 6
Depiction of miniaturized atomic beam source. (a) Schematic of the Rb beam source. (b) Image of assembled device. (c) Rb fluorescence spectrum measuring the transverse velocity distribution of the atomic beam, and Rb absorption spectrum measuring the Rb vapor density feeding the channel array. A saturated absorption spectrum from a natural abundance Rb cell is included for reference.

Chip-Scale Atomic Beam System

NIST Inventors
Elizabeth Donley , John Kitching and William McGehee
The invention is a device for creating a collimated atomic beam in an evacuated vacuum package fabricated from lithographically defined or machined, planar structures and with components to source atomic vapor and passive pumps to maintain vacuum conditions. We have developed a chip-scale system for
Schematic comparison of the conventional approach and this invention for a sample (analyte + solvent) with a strong solvent absorption band in the spectral range of interest.

Spectrum Adjuster and Producing a Pure Analyte Spectrum

NIST Inventors
Young Jong Lee
A spectrum adjuster produces a pure analyte spectrum and includes: a dynamic opacity optic that receives input light, receives an adjustment signal, produces primary adjusted light, and produces secondary adjusted light from the input light based on the adjustment signal; a light source in optical
an image showing several different charts and figures that is titled "High-Resolution imaging and spectroscopy at High Pressure: A Novel Liquid Cell for the TEM"

Vacuum Compatible Fluid Sampler

NIST Inventors
Glenn Holland and Samuel M. Stavis
A fluid sampler includes: a sample cell that includes: a substrate comprising: a first port; a viewing reservoir in fluid communication with the first port and the second port and that receives the fluid from the first port and communicates the fluid to the second port, the viewing reservoir
Image of devices on a table

Optical Parametric Oscillator

NIST Inventors
John T. Woodward IV
An optical parametric oscillator produces optical parametric light and includes a frequency splitter to produce signal light and idler light; a wavelength selector to select a wavelength of the signal light and to produce optical parametric light from the selected wavelength of the signal light; and
Diagram of the dual optical frequency comb spectrometer consisting of a single laser that is split into local oscillator, reference and probe legs to down-convert, interleave and normalize gas sample absorption signals.

Variable-Frequency Optical Combs, Heterodyne Sensor, and Process for Performing Spectroscopy

NIST Inventors
David F. Plusquellic , Kevin O Douglass and Adam J. Fleisher
This invention uses lasers and modulators to create special light waves called “optical frequency combs” that can scan multiple chemical features instantly. These combs detect chemicals by analyzing how light changes as it interacts with different substances. It’s fast, accurate, and doesn’t need
Was this page helpful?