Compact Fiber-Pumped Terahertz Source Based on Difference Frequency Mixing in ZGP.

Autor: Creeden, D., McCarthy, J.C., Ketteridge, P.A., Southward, T., Schunemann, P.G., Komiak, J.J., Dove, W., Chicklis, E.P.
Zdroj: IEEE Journal of Selected Topics in Quantum Electronics; May/Jun2007, Vol. 13 Issue 3, p732-737, 6p
Abstrakt: We have demonstrated a novel terahertz source based on dual-wavelength amplification in polarization maintaining Yb- doped fiber and frequency mixing in a zinc germanium phosphide (ZGP) crystal. The system consists of two orthogonally polarized signals, whose difference frequency is in the terahertz region, amplified in a single all-fiber amplifier chain and mixed in a ZGP crystal to generate high-peak-power terahertz radiation. Currently, 2 mW of average terahertz power (20 W peak, 20 nJ/pulse) has been produced at a repetition rate of 100 kHz and pulsewidths of 1 ns with a conversion efficiency of 0.137%. We have also developed a terahertz mixing model, which coincides well with our experimental data. [ABSTRACT FROM PUBLISHER]
Databáze: Complementary Index