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Effect of Etching Depth on Threshold Characteristics of GaSb-Based Middle Infrared Photonic-Crystal Surface-Emitting Lasers.
Li, Zong-Lin; Lin, Shen-Chieh; Lin, Gray; Cheng, Hui-Wen; Sun, Kien-Wen; Lee, Chien-Ping.
Afiliação
  • Li ZL; Department of Electronics Engineering and Institute of Electronics, National Chiao Tung University, Hsinchu City 30010, Taiwan. martin323261@gmail.com.
  • Lin SC; Department of Electronics Engineering and Institute of Electronics, National Chiao Tung University, Hsinchu City 30010, Taiwan. z810481@gmail.com.
  • Lin G; Department of Electronics Engineering and Institute of Electronics, National Chiao Tung University, Hsinchu City 30010, Taiwan. graylin@mail.nctu.edu.tw.
  • Cheng HW; Department of Electronics Engineering and Institute of Electronics, National Chiao Tung University, Hsinchu City 30010, Taiwan. hwcheng2011@gmail.com.
  • Sun KW; Center for Nano Science and Technology, National Chiao Tung University, Hsinchu City 30010, Taiwan. hwcheng2011@gmail.com.
  • Lee CP; Department of Applied Chemistry, National Chiao Tung University, Hsinchu City 30010, Taiwan. kwsun@mail.nctu.edu.tw.
Micromachines (Basel) ; 10(3)2019 Mar 14.
Article em En | MEDLINE | ID: mdl-30875813
ABSTRACT
We study the effect of etching depth on the threshold characteristics of GaSb-based middle infrared (Mid-IR) photonic-crystal surface-emitting lasers (PCSELs) with different lattice periods. The below-threshold emission spectra are measured to identify the bandgap as well as band-edge modes. Moreover, the bandgap separation widens with increasing etching depth as a result of enhanced diffraction feedback coupling. However, the coupling is nearly independent of lattice period. The relationship between threshold gain and Bragg detuning is also experimentally determined for PCSELs and is similar to that calculated theoretically for one-dimensional distributed feedback lasers.
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Texto completo: 1 Base de dados: MEDLINE Idioma: En Ano de publicação: 2019 Tipo de documento: Article
Texto completo
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PubMed Links
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Texto completo: 1 Base de dados: MEDLINE Idioma: En Ano de publicação: 2019 Tipo de documento: Article