LEDS for Spectroscopy

LEDs provide a source of photons at high irradience within a narrow spectral bandwidth and can be used to provide higher sensitivity detection for many hyper-spectral process control applications including;

  • fluorescence spectroscopy and imaging
  • photoluminescence spectroscopy and imaging
  • absorption and transmission measurements
  • high-resolution colour reflectivity measurements
  • low resolution Raman spectroscopy
  • photoacoustic spectroscopy

With compact, low-power consumption, solid-state construction and capability to be used in modulated configuration for frequency-domain spectroscopy, a carefully selected array of LEDS can replace large monochromator assemblies and make many applications commercially viable.  In many applications requiring multi-wavelength excitation, a solid-state switchable LED array can enhance measurement speed and simplify design by eliminating scanning assemblies.

 

Savante supplies highly-qualified individual LEDs across the UV-Visible-Near Infrared spectrum; each individually characterised for fast warm-up, narrow bandwidhth spectral content, power stability, thermal performance and emission profile.  In many prototyping projects, this data can be essential in reducing the time and effort required to optimise a particular illumination assembly.  Sources can be further tuned using polarisers or band-pass, low or high pass filters for improved cut off.

 

The graph below shows our ever evolving and extensive library of LEDs wavelengths available in 3mm and 5mm clear lens output. 

 Graph showing distribution of integrated optical output vs. wavelength for Savante LEDs for spectroscopy

Graph showing distribution of integrated optical output vs. wavelength for Savante LEDs for spectroscopy