PPLN for Difference Frequency Generation
Difference
Frequency Generation, DFG, can
be used to generate wavelengths in the 2-5µm range by mixing
two
shorter wavelengths in
a suitable PPLN crystal.
Stratophase’s standard DFG crystals are designed to produce
light
at the difference between the frequencies of a fixed frequency Nd:YAG
laser and a tuneable Ti Sappire, or similar lasers. The output
wavelength is selected by tuning the input laser, selecting the
correct grating in the PPLN crystal and varing the PPLN
temperature.
Features
- AR Coated; Input facet approximately <1%R @ Pump wavelengths, Output facet approximately <2% @ generated wavelengths
- Multiple Gratings; Maximum Flexibility, tuning possible via temperature, grating or pump wavelength selection
- High efficiency generation of 2-5µm
- These crystals are available in other lengths and with different coatings as semi-standard products
- Crystals for other wavelengths are available as semi-standard or custom products.
To purchase these products please contact Stratophase.
A complete catalogue of PPLN crystals and accessories is also available to download here.