High resolution acousto-optical spectrometer (AOS) with a band width of 1 GHz for laboratory spectroscopy and airborne astronomy in the spectral range 500 ghz - 2000 GHz

摘要

The XFIfR acousto-optical spectrometer has a bandwidth of 992 MHz and a 1.7 MHz resolution. Using a heterodyne receiver we obtained laboratory spectra of the CO(12 - 11) rotational transition. The pressure broadening parameter of this line was determined to be 2.59(16) MHz/Torr. The AOS was also flown on board the Kuiper Airborne Observatory and performed just as well as in the laboratory.