In collaboration with NTT Photonics, we are investigating
the performance of newly designed waveguide(WG) PPLN
crystals for DFG. WG-PPLN offers a significantly better
conversion efficiency to convert near-IR to mid-IR, thus
potentially removing the need for high power fiber optic
amplifiers.
Testing of a mid-IR PPLN-WG is currently ongoing at
NCAR-APOL.
Our first results using mid-IR PPLN-WG crystals are
published in OpticsExpress:
"High-power, tunable difference frequency
generation source for absorption spectroscopy based on a
ridge waveguide periodically poled lithium niobate crystal"
by Dirk Richter, Petter Weibring, Alan
Fried, (NCAR); and Osamu Tadanaga, Yoshiki Nishida, Masaki
Asobe, Hiroyuki Suzuki (NTT Photonics)
