Near-field optical control of nonlinear properties of single quantum dots

Toshiharu Saiki, Kenichi Nishi

研究成果: Conference article査読


Near-field spectroscopy of self-assembled InGaAs single quantum dots (QDs) is described. For the application of near-field optical microscope to various versions of advanced spectroscopy of single QDs, the functional performance of a near-field fiber probe is much improved. By optimizing the structure of the probe, high sensitivity in signal detection, as well as high spatial resolution, is successfully achieved. In combination with a standard pump-probe spectroscopic techniques, we realize nonlinear absorption spectroscopy of single QDs at low temperature. The absorption cross section of a single QD is effectively modified by local injection of a few electrons into the QD. Employing a femtosecond pulsed laser, time-resolved photoluminescence spectroscopy is also performed.

ジャーナルProceedings of SPIE - The International Society for Optical Engineering
出版ステータスPublished - 1999
イベントProceedings of the 1999 Near-Field Optics: Physics, Devices, and Information Processing - Denver, CO, USA
継続期間: 1999 7月 221999 7月 23

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • コンピュータ サイエンスの応用
  • 応用数学
  • 電子工学および電気工学


「Near-field optical control of nonlinear properties of single quantum dots」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。