We investigate the dephasing dynamics in semiconductor superlattices using timeresolved four-wave mixing. The signals show a periodic modulation which can be related to Bloch oscillations in the superlattice miniband. The oscillation frequency is strongly dependent on the applied field, in agreement
✦ LIBER ✦
Internal field dynamics of coherent bloch oscillations in superlattices
✍ Scribed by Thomas Dekorsy; Patrick Leisching; Wolfgang Beck; Reinhold Ott; Yousef Dhaibi; Ralf Schwedler; Harmut G. Roskos; Heinrich Kurz; Klaus Köhler
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 176 KB
- Volume
- 15
- Category
- Article
- ISSN
- 0749-6036
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## Abstract Transition from local complexity to global spatio‐temporal dynamics in a two‐dimensional array of fluid‐elastic oscillators is examined experimentally with an apparatus comprising 90‐1000 cantilevered rods in a wind tunnel as the Reynolds number (based on rod diameter) is increased from