TY - CHAP U1 - Konferenzveröffentlichung A1 - Ren, Y. A1 - Hovenier, J. N. A1 - Higgins, R. A1 - Gao, J. R. A1 - Klapwijk, T. M. A1 - Shi, S. C. A1 - Bell, A. A1 - Klein, B. A1 - Kao, T.-Y. A1 - Kumar, S. A1 - Hu, Q. A1 - Reno, J. L. T1 - Gas Cell Measurement Using a 2.9 THz Heterodyne Receiver Based on a Quantum Cascade Laser and a Superconducting Hot Electron Bolometer T2 - 21st International Symposium on Space Terahertz Technology (ISSTT 2010). Oxford and Didcot, United Kingdom, 23-25 March 2010 N2 - Superconducting heterodyne receiver has played a vital role in the high resolution spectroscopy applications for astronomy and atmospheric research up to 2THz. NbN hot electron bolometer (HEB) mixer, as the most sensitive mixer above 1.5THz, has been used in the Herschel space telescope for 1.4-1.9THz and has also shown an ultra-high sensitivity up to 5.3THz. Combined a HEB mixer with a novel THz quantum cascade laser (QCL) as local oscillator (LO), such an all solid-state heterodyne receiver provides the technology which can be used for any balloon-, air- and space-borne heterodyne instruments above 2THz. Here we report the first high-resolution heterodyne spectroscopy measurement using a gas cell and using such a HEB-QCL receiver. The receiver employs a 2.9THz metal-metal waveguide QCL as LO and a NbN HEB as a mixer. By using a gas cell filled with methanol (CH3OH) gas in combination with hot/cold blackbody loads as signal source, we successfully recorded the methanol emission line around 2.918THz. Spectral lines at different pressures and also different frequency of the QCL are studied. Y1 - 2011 UR - https://library.nrao.edu/isstt/catalog/2010229232 SP - 229 EP - 232 ER -