標題: Quantum dot vertical-cavity surface-emitting lasers covering the 'green gap'
作者: Mei, Yang
Weng, Guo-En
Zhang, Bao-Ping
Liu, Jian-Ping
Hofmann, Werner
Ying, Lei-Ying
Zhang, Jiang-Yong
Li, Zeng-Cheng
Yang, Hui
Kuo, Hao-Chung
光電工程學系
光電工程研究所
Department of Photonics
Institute of EO Enginerring
關鍵字: GaN;InGaN;quantum dot;vertical-cavity surface-emitting laser;wide-gap semiconductor
公開日期: 1-Jan-2017
摘要: Semiconductor vertical-cavity surface-emitting lasers (VCSELs) with wavelengths from 491.8 to 565.7 nm, covering most of the 'green gap', are demonstrated. For these lasers, the same quantum dot (QD) active region was used, whereas the wavelength was controlled by adjusting the cavity length, which is difficult for edge-emitting lasers. Compared with reports in the literature for green VCSELs, our lasers have set a few world records for the lowest threshold, longest wavelength and continuous-wave (CW) lasing at room temperature. The nanoscale QDs contribute dominantly to the low threshold. The emitting wavelength depends on the electron-photon interaction or the coupling between the active layer and the optical field, which is modulated by the cavity length. The green VCSELs exhibit a low-thermal resistance of 915 kW(-1), which benefits the CW lasing. Such VCSELs are important for small-size, low power consumption full-color displays and projectors.
URI: http://dx.doi.org/10.1038/lsa.2016.199
http://hdl.handle.net/11536/133303
ISSN: 2047-7538
DOI: 10.1038/lsa.2016.199
期刊: LIGHT-SCIENCE & APPLICATIONS
Volume: 6
起始頁: 0
結束頁: 0
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