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High-resolution temporal and spatial photoluminescence measurement of a multiple-quantum-well structure at room temperature
- Authors
- An, Honggyu; Kim, Jaehyuk; Kim, Dae-kyu; Lee, Eungjang; Shin, Dong-Soo; Doh, Hyeonjin; Park, Seung-Han
- Issue Date
- Feb-2009
- Publisher
- SPIE-INT SOC OPTICAL ENGINEERING
- Keywords
- multiple quantum wells; near-field scanning optical microscope; time-correlated single photon counting
- Citation
- ULTRAFAST PHENOMENA IN SEMICONDUCTORS AND NANOSTRUCTURE MATERIALS XIII, v.7214, pp.1 - 8
- Indexed
- SCIE
SCOPUS
- Volume
- 7214
- Start Page
- 1
- End Page
- 8
- ISSN
- 0277-786X
- Abstract
- We demonstrate an experimental setup combining the near-field scanning optical microscope (NSOM) and time-correlated single photon counting (TCSPC) system for high-resolution temporal and spatial spectroscopic measurements. In particular, a multiple-quantum-well (MQW) structure was excited with a tapered optical fiber with 100 nm opening aperture in near-field region and their temporal photoluminescence spectra were obtained by TCSPC system. We are able to measure fluorescence decay time of a GaAs/AlGaAs MQW structure with well width of 75 angstrom in the near-field region at room temperature.
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Related Researcher
- Shin, Dong Soo
- COLLEGE OF SCIENCE AND CONVERGENCE TECHNOLOGY (DEPARTMENT OF PHOTONICS AND NANOELECTRONICS)