Abstract
We propose a technique that uses an optical mask layer of a phase-change material (PCM), which is used for rewritable optical recording media, to achieve highly sensitive near-field imaging spectroscopy of single semiconductor quantum constituents at optical telecommunication wavelengths. An amorphous nanoaperture allows imaging spectroscopy with a high spatial resolution and high collection efficiency. This is due to the large optical contrast between the crystalline and amorphous phases of the phase-change material at visible wavelengths and its high transparency at near-infrared wavelengths. We demonstrate the effectiveness of the method by numerical simulations and photoluminescence measurements of InAs/InP quantum dots.
Original language | English |
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Article number | 063111 |
Journal | Applied Physics Letters |
Volume | 100 |
Issue number | 6 |
DOIs | |
Publication status | Published - 2012 Feb 6 |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)