Spectrometers

526 Spectrometers from 50 manufacturers listed on GoPhotonics

Find and compare spectrometer from the leading manufacturers. Filter results by wavelength, measurement techniques supported and other parameters to find the spectrometer that is right for you. Download Datasheets and Request Quotations.

Spectrometer Type:
Modular
Measuring Techniques:
NIR Spectroscopy, Color Measurement, Irradiance, A...
Wavelength Range:
900-1700 nm(NIRQuest+1.7), 900-2200 nm(NIRQuest+2....
Spectral Resolution:
3.4 to 10.8 nm (Depending on Model)
Integration Time:
1 ms - 200 ms
Spectrum Band:
NIR
A/D Resolution:
16 Bit
Entrance Slit:
25 µm
more info
Description: HR4000CG-UV-NIR 3High Resolution Spectrometer for Biological and Chemical Applications
Spectrometer Type:
Modular, Portable
Measuring Techniques:
Molecular Spectroscopy
Wavelength Range:
190 to 1100 nm
Spectral Resolution:
5 nm
Spectrum Band:
UV/Visible
more info
Description: Educational Spectroscope
Spectrometer Type:
Tripod Base
Measuring Techniques:
Emission
Wavelength Range:
3600 to 7600 nm
Spectral Resolution:
50 Angstroms (5 nm)
more info
Description: USB4000-UV-VIS Application-ready Spectrometer for the UV-VIS
Spectrometer Type:
Benchtop
Measuring Techniques:
Fluorescence Spectroscopy, Absorbance
Wavelength Range:
190 to 800 nm
Spectral Resolution:
2.5 nm
Integration Time:
17 ms - 1 min
A/D Resolution:
16 bit
more info
Description: Handheld NIR OEM Spectrometer for Food Analysis & Recycling Industry
Spectrometer Type:
Handheld
Measuring Techniques:
NIR Spectroscopy
Wavelength Range:
900 to 1700 nm
Spectral Resolution:
2 to 50 nm
Integration Time:
10 µs to 300 ms(HS), 10 µs – 5 s(LN)
Spectrum Band:
NIR
Slitwidth:
50 µm, 100 µm, 200 µm, 500 µm
A/D Resolution:
16-bit, 500 kHz
Stray Light:
1%
more info
Spectrometer Type:
Modular
Measuring Techniques:
MIR Measurements
Wavelength Range:
1.5 to 6.3 µm
Spectral Resolution:
3 nm
more info
Description: Fiber-coupled Terahertz Spectrometer
Spectrometer Type:
Modular
Measuring Techniques:
Laboratory Spectrometer, Real-time measurements, P...
Wavelength Range:
1064 nm
Spectral Resolution:
3.5 THz
more info
Spectrometer Type:
Benchtop
Measuring Techniques:
Raman Spectroscopy, Fluorescence Spectroscopy, Pla...
Wavelength Range:
0 to 1500 nm
Spectral Resolution:
0.006 nm
Spectrum Band:
UV-VIS-NIR
Slitwidth:
3 µm to 3 mm
more info
Spectrometer Type:
Modular
Measuring Techniques:
NIR Spectroscopy, IR Spectroscopy
Wavelength Range:
1350 to 2500 nm
Spectral Resolution:
8 nm or 16 nm
Spectrum Band:
VIS-NIR
more info
Description: QE Pro-FL High-sensitivity Spectrometer for Fluorescence
Spectrometer Type:
Modular, Portable
Measuring Techniques:
Molecular Spectroscopy
Wavelength Range:
190 to 1100 nm
Spectral Resolution:
3 nm
Spectrum Band:
UV/Vis/NIR
more info

Spectrometers & Spectroscopy

Spectroscopy is the study of the interaction of electromagnetic radiation in all its forms with matter. This interaction might give rise to electronic excitations, (e.g. UV), molecular vibrations (e.g. IR) or nuclear spin orientations (e.g. NMR).

When a light or other radiation falls upon certain material liquid, gas or solid, a part of it gets absorbed by the material. This absorption causes the atoms, the molecules, and the bonds between them to vibrate at the same range of frequencies as the incident radiation. As a result we either see illuminance or a change in polarization or change in dipole moment. This entirely depends upon the type of radiation we are using.

Spectroscopy is the study of changes that occur in a sample due to absorption of the radiation. Spectrometers use these changes to identify and evaluate the sample. When a beam of white light strikes a triangular prism it is separated into its various components (ROYGBIV). This is known as a spectrum. The optical system which allows production and viewing of the spectrum is called a spectroscope or spectrometer. There are many other forms of light which are not visible to the human eye and spectroscopy is extended to cover all of these.

How does a spectrometer work:

A spectroscopic instrument or spectrometer generally consists of an entrance slit, collimator, a dispersive element, such as a grating or prism, focusing optics and a detector. In a monochromator system there is normally also an exit slit, and only a narrow portion of the spectrum is projected on a single one-element detector. In monochromators the entrance and exit slits are in a fixed position and can be changed in width. Rotating the grating scans the spectrum. 

The basic function of a spectrometer is to take in light, break it into its spectral components, digitize the signal as a function of wavelength, and display it through a computer. The first step in this process is to direct light through a fiber optic cable into the spectrometer through a narrow aperture known as an entrance slit. The slit vignettes the light as it enters the spectrometer. In most spectrometers, the divergent light is then collimated by a concave mirror and directed onto a grating. The grating then disperses the spectral components of the light at varying angles, which are then focused by a second concave mirror and reflected on to the detector. Alternatively, a concave holographic grating can be used to perform all three of these functions simultaneously. This alternative has various advantages and disadvantages, which will be discussed in more detail later on.

Once the light is imaged onto the detector the photons are then converted into electrons which are digitized and read out through a USB (or serial port) to a computer. The software then interpolates the signal based on the number of pixels in the detector and the linear dispersion of the diffraction grating to create a calibration that enables the data to be plotted as a function of wavelength over the given spectral range. This data can then be used and manipulated for countless spectroscopic applications.