TY - JOUR U1 - Zeitschriftenartikel, wissenschaftlich - begutachtet (reviewed) A1 - Ren, Y. A1 - Hovenier, J. N. A1 - Higgins, R. A1 - Gao, J. R. A1 - Klapwijk, T. M. A1 - Shi, S. C. A1 - Klein, B. A1 - Kao, T.-Y. A1 - Hu, Q. A1 - Reno, J. L. T1 - High-resolution heterodyne spectroscopy using a tunable quantum cascade laser around 3.5 THz JF - Applied Physics Letters KW - magnetic resonance spectrometers auxiliary equipment KW - measurement by laser beam KW - terahertz spectroscopy KW - quantum cascade lasers KW - optical frequency synthesizers for precision spectroscopy KW - submillimeter wave microwave KW - techniques KW - Radio-frequency KW - radiowave spectrometers KW - microwave spectra KW - spectrochemical analysis KW - Metrological applications SN - 0003-6951 SS - 0003-6951 U6 - https://doi.org/10.1063/1.3599518 DO - https://doi.org/10.1063/1.3599518 VL - 98 IS - 23 PB - AIP Publishing ER -