Parity–time-symmetric circular Bragg lasers: a proposal and analysis
Publication in refereed journal

香港中文大學研究人員
替代計量分析
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摘要We propose a new type of semiconductor lasers by implementing the concept of parity–time symmetry in a two-dimensional circular Bragg grating structure, where both the real and imaginary parts of the refractive index are modulated along the radial direction. The laser modal properties are analyzed with a transfer-matrix method and are verified with numerical simulation of a practical design. Compared with conventional distributed-feedback lasers with modulation of only the real part of refractive index, the parity–time-symmetric circular Bragg lasers feature reduced threshold and enhanced modal discrimination, which in combination with the intrinsic circularly symmetric, large emission aperture are clear advantages in applications that require mode-hop-free, high-power, single-mode laser operation.
出版社接受日期01.11.2016
著者Gu JH, Xi X, Ma JW, Yu ZJ, Sun XK
期刊名稱Scientific Reports
出版年份2016
月份11
日期28
卷號6
頁次37688
國際標準期刊號2045-2322
電子國際標準期刊號2045-2322
語言美式英語

上次更新時間 2021-01-03 於 02:34