Spectral and temporal optical signal generation using randomly distributed quantum dots

Suguru Shimomura, Takahiro Nishimura, Yuki Miyata, Naoya Tate, Yusuke Ogura, Jun Tanida

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


Quantum dots (QDs) have a great potential for realizing information processing because of their signal-modulation capability based on energy transfer. We present a method for generating diverse temporal and spectral signals based on the energy transfer between multiple QDs. The method uses randomly distributed QDs, so it is not necessary to precisely arrange a QD network. With multiple energy transfers between QDs, a variety of signals within the QD network can be generated by optical inputs. Experimental results revealed that fluorescence decays of dense QDs were faster when the density of QDs or the irradiation intensity decreased. Furthermore, depending on the positions, stacked QDs showed different spectral responses. The randomly distributed QDs can generate diverse signals, which is essential for signal processing to handle temporal information.

Original languageEnglish
Pages (from-to)264-269
Number of pages6
JournalOptical Review
Issue number2
Publication statusPublished - Apr 1 2020

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics


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