Frankfurt Laser Company offers Free Space Narrow Linewidth Laser Diodes designed to meet Raman spectroscopy requirements. Raman spectroscopy is based on inelastic scattering (or Raman scattering) of monochromatic light at wavelengths typical in the visible range or in the IR range.

This light is usually generated using a laser which fulfils key performance parameters like a narrow spectral linewidth, a good beam quality and a high and stable output power.

The Frankfurt Laser Company laser diodes from the FRLD-VBG series are excellent suited as light source for this application. They are offered at wavelengths of 532nm, 638nm, 785nm, 808nm, 830nm, 976nm & 1064nm and with an output power up to 800mW.

The spectral linewidth is very narrow due to an integrated Volume Bragg Grating and typically less than 0.1nm. Careful thermomechanical control and high-precision alignment inside the laser is important to achieve high stability in the output wavelength and linewidth, especially when operating the laser at varying ambient temperatures.