Polymer waveguides for THz QCL radiation delivery and filtering Maxim Nazarov, A. Shilov, Z. Margushev, K. Bzheumikhov, I. Ozheredov, A. Angeluts, A. Sotsky and A. Shkurinov EPJ Web Conf., 195 (2018) 04005 Published online: 23 November 2018 DOI: 10.1051/epjconf/201819504005