Abstract
We present an all-fiber source generating laser pulses in the 6 – 9 µm spectral range. The developed setup is based on difference frequency generation (DFG) in an orientation-patterned gallium phosphide (OP-GaP) with six different quasi-phase matching (QPM) periods. The maximum 7.4 mW average output power of the idler centered at 7600 nm was obtained with the 7% photon conversion efficiency.
© 2018 The Author(s)
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