647nm Solid-State Alternative To The HeNe Using VBG Technology

For some time engineers and scientists alike have been searching for a compact solid-state alternative to the HeNe gas laser. Until now solid-state alternatives were either standard diode lasers with wavelength in the red or a wavelength stabilised laser using a Volume Bragg Grating in the near-infra-red region. Our partner PD-LD has successfully produced a laser in the red-wavelength which uses Volume Bragg Grating technology and so offers both wavelength stability and red wavelength!

The powerful stabilised source uses a multi-mode red laser diode resulting in up to 500mW output power. They enable an increased range of spectroscopic analytical capabilities such as better characterisation of the C-H stretch range in Raman spectroscopy and thus suitable for analysing many organic compounds. By using both the internal temperature  control  and patented VBG technology a line width of <0.1nm is achieved with the initial product offering 500mW output power. Fibre-coupled and USB-controlled turnkey subsystems are available all of which are compact. Other applications include avionics and sensing.