He was doing THz stuff with some other sort of rectifying junction. I think schottkies may be too slow for optical wavelengths.
I've seen papers on schottky-based signal samplers that worked to 250, or maybe 500 GHz.
John
Oh, that's only 0.5THz? How slow... :-)
Now, back to my fast 20kHz sensor design.
-- Thanks, Fred.
I vaguely recall Josephson Junctions ?? ...Jim Thompson
-- | James E.Thompson, CTO | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC\'s and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 |
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Oh, goodle thz schottky
They do work up there.
John
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IBM...
Somebody did a 70 GS/s 'Scope with them over 25 years ago. It required liquid Helium for the JJ. I think is was 6 bits and 4k sample depth. But that is all i still remember.
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That was Hypres, a 70 GHz analog bandwidth equivalent-time sampler. The scope wasn't very practical and they discontinued it. Tek and HP did the same at room temperature. Their web site is down, so maybe they are gone.
John
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