title: Time-resolved ultraviolet near-field scanning optical microscope for characterizing photoluminescence lifetime of light-emitting devices.
abstract: We developed a instrument consisting of an ultraviolet (UV) near-field scanning optical microscope (NSOM) combined with time-correlated single photon counting, which allows efficient observation of temporal dynamics of near-field photoluminescence (PL) down to the sub-wavelength scale. The developed time-resolved UV NSOM system showed a spatial resolution of 110 nm and a temporal resolution of 130 ps in the optical signal. The proposed microscope system was successfully demonstrated by characterizing the near-field PL lifetime of InGaN/GaN multiple quantum wells.
authors.affiliation: Advanced Photonics Research Institute (APRI), Gwangju Institute of Science and Technology (GIST), Gwangju 500-712, Korea.
authors.forename: Kyoung-Duck
authors.initials: KD
authors.lastname: Park
authors.forename: Hyun
authors.initials: H
authors.lastname: Jeong
authors.forename: Yong Hwan
authors.initials: YH
authors.lastname: Kim
authors.forename: Sang-Youp
authors.initials: SY
authors.lastname: Yim
authors.forename: Hong Seok
authors.initials: HS
authors.lastname: Lee
authors.forename: Eun-Kyung
authors.initials: EK
authors.lastname: Suh
authors.forename: Mun Seok
authors.initials: MS
authors.lastname: Jeong