Designed to meet Raman spectroscopy requirements, Frankfurt Laser Company provides Free Space Narrow Linewidth Laser Diodes. 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 suited as a light source for this application. They are offered at wavelengths of 532nm, 638nm, 785nm, 808nm, 830nm, 976nm, and 1,064nm and with 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.
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