After that, with the flexibility
we had with the tri-service contract, we simply pursued this
(technology). We decided that this
was an interesting device and we began to explore it and we began to have
Saby’s group (my contact there was Arnie Lesk) to build these things
purposefully. And I began to write
papers on the so-called “double base diode”.
The first published paper I had,
according to my records, was in March 1955 and was published in Electronics
magazine, and shortly after that, in April 1955, I had one published in the
IRE Transactions. These were theoretical and experimental papers, and they
were (written) to describe the physics and electronic effect of this
unijunction transistor. For
example, the first paper in the IRE was entitled “Small Signal Wave Effects
in the Double Base Diode”, and “Low Frequency Circuit Theory of the Double
Base Diode”, a little bit later.
The whole idea was to try to find out how this thing was working, so
that it could be reproduced physically in a systematic way.
There must have been quite a
bit of communication and feedback to the device group as you developed a
better understanding of the physics of the device
Yes, that’s right. As we discovered more interesting
features and as we thought we knew a little more about how these things
worked, we had Arnie make them a little bit differently. Of course much later, I think around 1957,
we switched from germanium to silicon.