...monochromators with diffraction gratings as tunable optical filters. The monochromator separates the different wavelengths of light, and allows only specific wavelengths to which the optical spectrum analyzer is tuned to reach its photodetector. The result...
...century invention of the spectroscope. Spectroscopes are devices that separate all the wavelengths of visible light from a light source. Bernard Lyot is credited with the first use of filters as monochromators in the 1930s. Circular variable filters...

Diffractometers

(35 companies)
Diffractometers are used to measure crystal structure, grain size, texture, and/or residual stress of materials and compounds through the interaction of X-ray beams, gamma rays, electron beams, or neutron beams with a sample.
...sources and spectral calibration lamps. Calibrated irradiance sources are used to irradiate a sample with a known power density. Spectral calibration lamps produce narrow spectral lines and are used to calibrate monochromators, spectrographs, spectral...
Atomic emission and optical emission spectrometers determine analyte concentration via a quantitative measurement of the optical emission from excited atoms.
...from divergent, broadband radiant sources such as a mercury arc or tungsten-halogen lamps. These filters are also useful with deuterium and xenon lamps, and find applications in monochromators, spectrophotometers, and other optical systems...

Flame Photometers

(27 companies)
Flame photometers read atomic emissions to detect the presence of metal salts, principally sodium (Na), potassium (K), lithium (Li) and calcium (CA).

Cylindrical Lenses

(136 companies)
...correction. Focusing an image on a monochromator. Imaging of elongated targets. The image below shows the use of a cylindrical lens, and the effect of varying its relative position, in a beam-shaping application. Image credit: EKSMA Optics...
X-ray fluorescence spectrometers (XRFs) use a spectroscopic technique that is commonly used with solids, in which X-rays are used to excite a sample and generate secondary X-rays.

Diffraction Gratings

(38 companies)
The diffraction pattern can affect the amplitude and/or phase of the incident light as well. Diffraction gratings are often used in monochromators for producing monochromatic light sources that can be tuned by adjusting the angle of the incident light...

Infrared Spectrometers

(166 companies)
Infrared (IR) spectrometers measure the wavelength and intensity of the absorption of infrared light by a sample.

Wavelength Meters

(9 companies)
...identifying pulsed and continuous wave lasers. Wavelength meters deliver reliable monitoring of tunable and diode lasers. They enable calculations of improved validity compared with spectrometers or grating monochromators. These measurements range from...