論文

査読有り
2020年5月

Experimental Investigation of Lasing Modes in Double-Lattice Photonic-Crystal Resonators and Introduction of In-Plane Heterostructures

PROCEEDINGS OF THE IEEE
  • Masahiro Yoshida
  • ,
  • Masato Kawasaki
  • ,
  • Menaka de Zoysa
  • ,
  • Kenji Ishizaki
  • ,
  • Takuya Inoue
  • ,
  • Yoshinori Tanaka
  • ,
  • Ranko Hatsuda
  • ,
  • Susumu Noda

108
5
開始ページ
819
終了ページ
826
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1109/JPROC.2019.2935159
出版者・発行元
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC

Photonic-crystal surface-emitting lasers (PCSELs) are attractive for a wide range of applications such as material processing and remote sensing owing to their advantage of broad-area coherent lasing supported by a 2-D photonic crystal. Recently, we proposed double-lattice photonic-crystal resonators and achieved 10-W-class high-power and high-beam-quality (namely, high-brightness) operation. To further increase the brightness, it is important to understand the lasing mode behavior of PCSELs in detail. In this article, we experimentally investigate the change in the lasing mode depending on the current injection levels and compare the results with a theoretical analysis that accounts for the change in refractive index and gain distributions due to the current injection. We observed a transition from single-mode lasing to two-mode lasing at high injection currents. We develop a technique for resolving the near-field profiles of individual lasing modes and show that these profiles coincide with theoretical predictions. A comparison of experimental and theoretical results reveals that high-order modes appear due to a bandgap confinement effect induced by a change in the refractive index in the carrier injection area. To effectively remove this confinement effect and suppress the oscillation of high-order modes, we incorporate an in-plane heterostructure into the PCSEL.

Web of Science ® 被引用回数 : 2

リンク情報
DOI
https://doi.org/10.1109/JPROC.2019.2935159
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000531336500012&DestApp=WOS_CPL

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