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Published November 1, 1998 | public
Journal Article Open

A terahertz grid frequency doubler


We present a 144-element terahertz quasi-optical grid frequency doubler. The grid is a planar structure with bow-tie antennas as a unit cell, each loaded with a planar Schottky diode. The maximum output power measured for this grid is 24 mW at 1 THz for 3.1-μs 500-GHz input pulses with a peak input power of 47 W. An efficiency of 0.17% for an input power of 6.3 W and output power of 10.8 mW is measured. To date, this is the largest recorded output power for a multiplier at terahertz frequencies. Input and output tuning curves are presented and an output pattern is measured and compared to theory.

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© Copyright 1998 IEEE. Reprinted with permission. Manuscript received March 20, 1998; revised July 27, 1998. This work was supported by the Physical Optics Corporation, by the U.S. Army Research Office, and by the Jet Propulsion Laboratory.


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