High-temperature continuous-wave laser realized in hollow microcavities

被引：11

作者：

Shi, Zhifeng ^{[1
]}

Zhang, Yuantao ^{[1
]}

Cui, Xijun ^{[1
]}

Zhuang, Shiwei ^{[1
]}

Wu, Bin ^{[1
]}

Dong, Xin ^{[1
]}

Zhang, Baolin ^{[1
]}

Du, Guotong ^{[1
]}

机构：

[1] Jilin Univ, Coll Elect Sci & Engn, State Key Lab Integrated Optoelect, Changchun 130012, Peoples R China

来源：

SCIENTIFIC REPORTS | 2014年 / 4卷

基金：

中国国家自然科学基金;

关键词：

ZNO; EMISSION; GROWTH;

D O I：

10.1038/srep07180

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Recently, an urgent requirement of ultraviolet (UV) semiconductor laser with lower cost and higher performance has motivated our intensive research in zinc oxide (ZnO) material owing to its wide direct band gap and large exciton binding energy. Here, we demonstrate for the first time continuous-wave laser in electrically-pumped hollow polygonal microcavities based on epitaxial ZnO/MgO-core/shell nanowall networks structures, and whispering gallery type resonant modes are responsible for the lasing action. The laser diodes exhibit an ultralow threshold current density (0.27 A/cm(2)), two or three orders of magnitude smaller than other reported UV-light semiconductor laser diodes to our knowledge. More importantly, the continuous-current-driven diode can achieve lasing up to,430 K, showing a good temperature tolerance. This study indicates that nano-size injection lasers can be made from epitaxial semiconductor microcavities, which is a considerable advance towards the realization of practical UV coherent light sources, facilitating the existing applications and suggesting new potentials.

引用

页数：7

共 37 条

[1] PHOTO-VOLTAIC PROPERTIES OF ZNO-CDTE HETEROJUNCTIONS PREPARED BY SPRAY PYROLYSIS [J].