Energy scalable terahertz-wave parametric oscillator using surface-emitted configurationTomofumi Ikari, Ruixiang Guo, Hiroaki Minamide and Hiromasa ItoJ. Eur. Opt. Soc.-Rapid Publ., 5 (2010) 10054DOI: https://doi.org/10.2971/jeos.2010.10054