Parallel operation and crosstalk measurements in GaAs étalon optical logic devices

Jewell, J. L.; Lee, Y. H.; Duffy, J. F.; Gossard, A. C.; Wiegmann, W.
May 1986
Applied Physics Letters;5/19/1986, Vol. 48 Issue 20, p1342
Academic Journal
We report the first parallel operation of GaAs optical logic elements and bistable devices. Arrays up to 2×4 in size were operated using a picosecond pump and probe technique, while in the bistable mode we achieved uniform response in two spots. Crosstalk due to carrier diffusion became noticeable at separations of typically ∼20–30 μm in the bistable devices. Pulsed operation at 82 MHz allowed separations down to ∼10 μm limited only by diffraction. Efficient heat sinking in the pulsed array resulted in negligible heating even when continually operated for many minutes. All experiments were performed at room temperature.


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