Details

Autor(en) / Beteiligte

• Xia, J. S.
• Ikegami, Y.
• Shiraki, Y.
• Usami, N.
• Nakata, Y.

Titel

Strong resonant luminescence from Ge quantum dots in photonic crystal microcavity at room temperature

Ist Teil von

• Applied physics letters, 2006-11, Vol.89 (20), p.201102-201102-3

Ort / Verlag

American Institute of Physics

Erscheinungsjahr

2006

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Freestanding hexagonal two-dimensional photonic crystal (PhC) microcavities with Ge self-assembled quantum dots were fabricated on silicon-on-insulator substrates. Strong photoluminescence associated with Ge quantum dots was observed in the wavelength region of 1.2 - 1.6 μ m at room temperature. Sharp peaks dominated the spectrum, showing strong optical resonance inside the cavity. A resonant peak with a quality factor of 560 was observed at 1.58 μ m along with a significant enhancement of the luminescence in the microphotoluminescence spectrum. The peaks were also observed to reasonably shift when the structural parameter of PhC was changed.