论文信息 - Development of Local Oscillators

Development of Local Oscillators

We present the development of three local oscillator chains to be used on the CASIMIR (Caltech Airborne Submillimeter Interstellar Medium Investigations Receiver) instrument onboard the SOFIA (Stratospheric Observatory for Infrared Astronomy) aircraft. All three chains use all solid- state GaAs-based components to amplify and multiply a ~1-3 mW input signal at W band. At room temperature, the 900 GHz source produces 50-100 ! W of power from 800 to 930 GHz. The 1 THz source produces 50-120 ! W of power from 960 to 1045 GHz. The 1.4 THz source produces 10-70 ! W of power from 1320 to 1470 GHz. When cooled to 120 K, the 1.4 THz chain's output power increases by approximately 3 dB with a peak power of 129 ! W at 1395 GHz.

[1] John Ward,et al. Local Oscillators from 1.4 to 1.9 THz , 2005 .

[2] N. D. Whyborn,et al. The diagonal horn as a sub-millimeter wave antenna , 1992 .

[3] Alain Maestrini,et al. A high efficiency multiple-anode 260-340 GHz frequency tripler , 2006 .

[4] J. Krieg,et al. Performance of the HIFI Flight Mixers , 2008 .

[5] I. Mehdi,et al. Fabrication of 200 to 2700 GHz multiplier devices using GaAs and metal membranes , 2001, 2001 IEEE MTT-S International Microwave Sympsoium Digest (Cat. No.01CH37157).

[6] G. Chattopadhyay,et al. 1400-1900 GHz local oscillators for the Herschel Space Observatory , 2003 .

[7] Alain Maestrini,et al. A 780-950 GHz Frequency Tripler for Radio Astronomy , 2007 .

[8] Sergey Cherednichenko,et al. Hot-electron bolometer terahertz mixers for the Herschel Space Observatory. , 2008, The Review of scientific instruments.

[9] David P. Miller,et al. CASIMIR: a high resolution far-IR/submm spectrometer for airborne astronomy , 2010, Astronomical Telescopes + Instrumentation.