RECIPROCITY IN SIMULATIONS OF BOLOMETRIC DETECTORS IN TRANSMITTING MODE
Tóm tắt
Bolometric detectors used in radio-astronomical instruments such as the ESA Planck Surveyor, operate as incoherent receivers of electromagnetic radiation. Meanwhile, the optical (quasi-optical) parts of the instruments (feed horns, telescope mirrors) are conventionally designed in transmitting mode when a coherent source of radiation (supposedly, equivalent to the bolometric detector) replaces the detector and radiates the electromagnetic waves through the optical system to the sky. The rules of reciprocity in such a replacement of a detector by an “equivalent transmitter” located in a lossy (open) structure (a bolometric cavity coupled via the feed horn with the outer space) are not obvious and usually ignored. A conventional simplistic approach used in this problem may cause errors in the design of such systems. By considering simple, analytically solvable models that simulate bolometric detectors surrounded by some structures, we find the rules of reciprocity providing the necessary equivalence in replacing the receiver by an appropriate transmitter as needed for the rigorous simulations of infrared and submillimetre-wave bolometric systems.
Tài liệu tham khảo
Turner A. D. et al., Silicon Nitride Micromesh Bolometer Array for Submillimeter Astrophysics, Appl. Optics, Vol. 40, 4921 – 4932, 2001.
Lamarre J.-M. et al., The Planck High Frequency Instrument, a Third Generation CMB Experiment, and a Full Sky Submillimeter Survey, New Astronomy Review, Vol. 47, 1017 – 1024, 2003.
Murphy J. A. et al., Radiation Patterns of Multi-Moded Corrugated Horns for Far-IR Space Applications, Infrared Physics and Technology, Vol. 42, 515 – 528, 2001.
Maffei B. et al., Shaped Corrugated Horns for Cosmic Microwave Background Anistropy Measurements, Int. J. Infrared and Millimeter Waves, Vol. 21, 2023 – 2033, 2000.
Balanis C. A., Advanced Engineering Electromagnetics, John Wiley and Sons, New York, USA, 1989.
Yamamoto Y., A Photon in Solitary Confinement, Nature, Vol. 300, 17 – 18, 1997.
Kishino K. et al., Resonant Cavity-Enhanced (RCE) Photodetectors, IEEE J. Quantum Electron., Vol. QE-44, 2025 – 2034, 1991.
Delbeke D. et al., High-Efficiency Semiconductor Resonant-Cavity Light-Emitting Diodes: A Review, IEEE J. Selected Topics Quantum Electron., Vol. 8, 189 – 206, 2002.
Glenn J., Numerical Optimization of Integrating Cavities for Diffraction-Limited Millimeter-Wave Bolometer Arrays, Appl. Optics, Vol. 41, 136 – 142, 2002.
Bleszynski E., Bleszynski M., and Jaroszewicz T., Surface-Integral Equations for Electromagnetic Scattering from Impenetrable and Penetrable Sheets, IEEE Antennas and Propagation Magazine, Vol. 35, 14 – 25, 1993.
Altintas A., Pathak P. H., and Liang M. C., A Selective Modal Scheme for the Analysis of EM Coupling into or Radiation from Large Open-Ended Waveguides, IEEE Trans. Antennas and Propagat., Vol. AP-36, 84 – 96, 1988.
Kriegsmann G. A., Scattering by Large Resonant Cavity Structures, Wave Motion, Vol. 30, 329 – 344, 1999.
Zaitsev A. V. and Immoreev I. Ya, The Scope of Application of a Reciprocity Principle in the Theory of Antennas at Radiation and Reception of Ultra-Wideband Signals, Proc. 2nd Int. Workshop “Ultrawideband and Ultrashort Impulse Signals,” 19–22 September, 2004, Sevastopole, Ukraine, 97 – 100, 2004.
Cheo B. R.-S., A Reciprocity Theorem for Electromagnetic Fields with General Time Dependence, IEEE Trans. Antennas and Propagat., Vol. AP-13, 278 – 284, 1965.
Monzon J. C., A New Reciprocity Theorem, IEEE Trans. Microwave Theory Techn., Vol. MTT-44, 10 – 14, 1996.
Chattopadhyay G. et al., Feed Horn Coupled Bolometer Arrays for SPIRE — Design, Simulations, and Measurements, IEEE Trans. Microwave Theory Techn., Vol. MTT-51, 2139 – 2146, 2003.