標題: Mode-Hopping Phenomena in the InGaN-Based Core-Shell Nanorod Array Collective Lasing
作者: Huang, Chia-Yen
Tai, Tzu-Ying
Lin, Jing-Jie
Chang, Tsu-Chi
Liu, Che-Yu
Lu, Tien-Chang
Wu, Yuh-Renn
Kuo, Hao-Chung
光電學院
光電工程學系
College of Photonics
Department of Photonics
關鍵字: GaN;InGaN;core-shell;microcavity;collective lasing;mode hopping
公開日期: 1-Jul-2018
摘要: A two-dimensional monolithic InGaN-based core-shell it array was excited under a varying temperature. We observed an abrupt dominant mode hopping from 3.29 to 141 eV in the collective lasing as the temperature decreased from T = 240 to 225 K, Photoluminescence under a near-threshold pumping density revealed the splitting of spontaneous emission. between the core and the shell with a decreasing temperature. The bandgap evolution of GaN and InGaN showed opposite trends due to the interaction of temperature effects and bandgap renormalization effects. Theoretical simulation revealed the differences of gain spectra evolution between room lire and to temperature due to the difference the carrier dynamics, In the optically coupled nanorod array, the dominant lasing;mode was not only determined by it structure, but also strongly influenced by external operating conditions. Rattier than singular microcavity lasers the coupled nanorod array demonstrated a broader parameter space for on-chip wavelength manipulation.
URI: http://dx.doi.org/10.1021/acsphotonics.8b00471
http://hdl.handle.net/11536/147897
ISSN: 2330-4022
DOI: 10.1021/acsphotonics.8b00471
期刊: ACS PHOTONICS
Volume: 5
起始頁: 2724
結束頁: 2729
Appears in Collections:Articles