14 December 1992 All-electronic subpicosecond pulses for terahertz signal generation and detection
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Proceedings Volume 1929, 17th International Conference on Infrared and Millimeter Waves; 19291F (1992) https://doi.org/10.1117/12.2298168
Event: 17th International Conference on Infrared and Millimeter Waves, 1992, Pasadena, CA, United States
Abstract
We report the first sub-picosecond shock-waves ever generated and measured by electronic circuits. We have used these circuits with integrated antennas to generate freely-propagating THz radiation. The circuits are monolithic nonlinear transmission lines fabricated on GaAs and operating at T = 77 K. Nonlinear transmission lines (NLTL's) have been used by several researchers for generating electronic shock-waves with picosecond transition times by compressing the wavefront of a microwave power source.1 While the literature reflects continual decreases in these transition times, as measured both by diode sampling bridges and by electro-optic sampling, the fastest reported 10%-90% fall time thus far has been 1.4 ps, with a -5 V amplitude.2 However, generating and measuring a sub-picosecond transition with an all-electronic device has been an elusive goal because a fundamental limitation has been the NLTL diode series resistance. By immersing a packaged NLTL into liquid nitrogen, we were able to lower this resistance significantly, thereby producing voltage shock-waves with 880 fs fall times and 3.5 V amplitudes, as measured by an on-chip diode sampling bridge. We have used these circuits with integrated magnetic dipole (slot) antennas to generate freely propagating THz radiation, and we have observed measurable radiation beyond 3 THz.
© (1992) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
D. W. van der Weide, D. W. van der Weide, } "All-electronic subpicosecond pulses for terahertz signal generation and detection", Proc. SPIE 1929, 17th International Conference on Infrared and Millimeter Waves, 19291F (14 December 1992); doi: 10.1117/12.2298168; https://doi.org/10.1117/12.2298168
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