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GaAs/AlGaAs multiquantum well resonant photorefractive devices fabricated using epitaxial lift-off (1994)

Kyono, C. S. ; Ikossi-Anastasiou, K. ; Rabinovich, W. S. ; [et al.]

Woodbury, NY : American Institute of Physics (AIP)

Applied Physics Letters 64 (1994), S. 2244-2246

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ISSN: 1077-3118

Source: AIP Digital Archive

Topics: Physics

Notes: This letter deals with resonant photorefractive devices fabricated from multiquantum wells of GaAs/Al0.3Ga0.7As and operated in a quantum-confined Stark effect geometry. Details of the processing are presented. Epitaxial lift-off was used to remove the active device from the substrate. Low-temperature Al0.3Ga.07As was used as an insulator to form metal-insulator-semiconductor structures on both sides of the multiquantum wells. Proton implant damage was used to improve the fringe visibility. Photorefractive wave mixing with a diffraction efficiency of ∼0.03% was demonstrated. The incorporation of a nitride layer between the top electrode and the low-temperature AlGaAs increased the efficiency to 0.5%. The improvement is attributed to a reduction in the conduction of carriers across the low-temperature layer into the electrode.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.111658

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