Patent ID: 7620508
Filing Date: 2009-11-17
Classification: B82Y,G01J,H01S,H04B

Abstract:
1. A method for generating and detecting an electromagnetic (EM) signal in the terahertz (THz) range, the method comprising: generating, using a single source, EM energy having multiple modes in the THz range; selecting at least two of the modes of the EM energy that is generated using the single source to provide a multi-mode EM signal, adjacent ones of the selected modes of the multi-mode EM signal being separated by a frequency in the radio frequency (RF) frequency range or the microwave frequency range; subjecting the at least two modes of the multi-mode EM signal to mixing to generate an output signal in the RF frequency range or the microwave frequency range; isolating a beat signal component of the output signal that results from the mixing: and measuring the amplitude of the beat signal component.