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  • Conference on Lasers and Electro-Optics
  • OSA Technical Digest (Optica Publishing Group, 1992),
  • paper CTuS4

Ultrasensitive electroabsorption due to Wannier-Stark localization in extremely shallow superlattices at 77 K

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Abstract

We recently reported the observation of strong room temperature excitons in GaAs/AlxGa1−xAs MQWs for x as low as 0.02.τ This observation was technologically important since the ionization of the exciton under moderate fields (several volts/μm) results in strong electroabsorption.1 Also, fast carrier sweep-out2 results in superior high intensity operation.3

© 1992 Optical Society of America

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