Abstract
In Chap. 6, we studied a measurement of the spontaneous emission of an amplifier. A bolometer detects power directly by measuring the amount of heat generated by the power absorbed. Microwave radiation impinging upon a diode terminating a waveguide induces curents in the diode. The nonlinearity of the diode leads to current or voltage rectification and the d.c. voltage across the diode is a measure of the electric field across the diode. From the electric field, the incident power can be inferred, if there is no reflection or if proper account is taken of the reflection. The power can be calibrated versus the d.c. voltage.
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© 2000 Springer-Verlag Berlin Heidelberg
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Haus, H.A. (2000). Detection. In: Electromagnetic Noise and Quantum Optical Measurements. Advanced Texts in Physics. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-04190-1_9
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DOI: https://doi.org/10.1007/978-3-662-04190-1_9
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-08462-1
Online ISBN: 978-3-662-04190-1
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