Caltech Nanofabrication Group

  • Increase font size
  • Default font size
  • Decrease font size
Home Publications

Optical Spectroscopy of Ultrasmall Structures Etched from Quantum Wells

Research Area: Nanophotonics Year: 1986
Type of Publication: Article Keywords: photoluminescence, quantum well structures, aluminium arsenides, gallium arsenides, visible spectra, charge carriers
Authors: Kash, K.; Scherer, Axel; Worlock, J. M.; Craighead, H. G.; Tamargo, M. C.
Journal: Applied Physics Letters Volume: 49
Number: 16 Pages: 1043-1045
Month: October
We have studied the photoluminescence and photoexcitation spectra of ultrasmall structures, of approximately 500 Å in dimension, which we refer to as quantum ribbons and quantum disks. These are fabricated from GaAs-AlGaAs quantum wells grown by molecular beam epitaxy and patterned by electron beam lithography. Contrary to our expectation, photoluminescence from these structures is extremely efficient. The excitation spectra of the two types of small structures differ greatly from each other and from that of the as-grown quantum wells. These differences may be a result of the confinement of the carriers in these small structures.
Full text:
PDF: Caltech only
Online version (publisher)


Administrative and Financial Contact

Kate Finigan
MC 200-36, Caltech
1200 E California Blvd
Pasadena, CA 91125

Office:  212 Sloan Annex
Phone:  626.395.4585
Fax: 626.577.8442