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Proceedings Paper

Demonstration of extremely low switching energies using new n-i-p-i-based smart pixels
Author(s): Michael Kneissl; Peter Kiesel; Peter Riel; K. Reingruber; Karlheinz H. Gulden; Stefan U. Dankowski; Erik Greger; A. Hoefler; Bernhard Knuepfer; Gottfried H. Doehler; X. X. Wu; John Stephen Smith
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Paper Abstract

We report on recent theoretical and experimental results on n-i-p-i based smart pixels. We present first results on dynamical switching in these devices. In particular, we present 1.9 ns switching times at an optical power of 880 (mu) W for the photoconductive switch. This corresponds to a total switching energy of 1.7 pJ or 2.4 fJ/micrometers 2 relative to the device area. A contrast of the electronic output signal larger than 107 and a maximum dc gain exceeding 106 is achieved. For an optical NOR gate -- composed of a photoconductive switch and an electroabsorptive n-i-p-i modulator -- we were able to demonstrate operation at optical switching energies of 2 pJ and switching times of 1 microsecond(s) . This corresponds to an opto-optical gain (fan out) of 750. The switching contrast of the optical output signal is 4.5:1.

Paper Details

Date Published: 11 May 1994
PDF: 15 pages
Proc. SPIE 2139, Quantum Well and Superlattice Physics V, (11 May 1994); doi: 10.1117/12.175701
Show Author Affiliations
Michael Kneissl, Univ. Erlangen-Nuernberg (Germany)
Peter Kiesel, Univ. Erlangen-Nuernberg (Germany)
Peter Riel, Univ. Erlangen-Nuernberg (Germany)
K. Reingruber, Univ. Erlangen-Nuernberg (Germany)
Karlheinz H. Gulden, Univ. Erlangen-Nuernberg (Germany)
Stefan U. Dankowski, Univ. Erlangen-Nuernberg (Germany)
Erik Greger, Univ. Erlangen-Nuernberg (Germany)
A. Hoefler, Univ. Erlangen-Nuernberg (Germany)
Bernhard Knuepfer, Univ. Erlangen-Nuernberg (Germany)
Gottfried H. Doehler, Univ. Erlangen-Nuernberg (Germany)
X. X. Wu, Univ. of California/Berkeley (United States)
John Stephen Smith, Univ. of California/Berkeley (United States)

Published in SPIE Proceedings Vol. 2139:
Quantum Well and Superlattice Physics V
Gottfried H. Doehler; Emil S. Koteles, Editor(s)

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