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Description:

We present our recent development of the surface-emitting quantum cascade laser with a PC (photonic crystal) resonator and a strain-compensated MQW (multiple quantum well) active layer operating at around 4.3 μm. We describe the laser performance mainly from the viewpoint of the design and analysis of the PC resonators, include both numerical calculations by FEM (finite element method) and analytical calculations using the k·p perturbation theory and group theory. We analyze the resonance quality factor, overlap factor, extraction efficiency, and far-field pattern, and show how the output power and beam quality have been improved by the appropriate design of the PC resonator.

Rights:

• Creative Commons BY Attribution 4.0 International
  

Keyword: quantum cascade laser, photonic crystal resonator, quality factor, extraction efficiency, finite element method, k.p perturbation

Date published: 2024-10-30

Publisher: MDPI AG

Journal:

• Photonics (ISSN: 23046732) vol. 11 issue. 11 1024

Funding:

• ATLA JPJ004596 (波長・空間選択性に優れた量子カスケード素子の研究)

Manuscript type: Publisher's version (Version of record)

MDR DOI:

First published URL: https://doi.org/10.3390/photonics11111024

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Updated at: 2024-12-26 16:30:47 +0900

Published on MDR: 2024-12-26 16:30:47 +0900