Self-consistent rate equation modeling of bi-functional quantum cascade structures

Date

2023-6-19

Author

Boyraz, Ozan Berk

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This study presents a single, self-consistent model based on the rate equations that accurately estimate the performance parameters for quantum cascade structures for both lasing operation and photodetection operation. The steps of the model are the solution of the temperature-dependent effective mass Schrödinger equation, calculation of the optical and the non-optical scattering rates between energy sub-bands, electrical and optical analysis of quantum cascade structure, and estimating the fundamental performance parameters. This model can be utilized to design bi-functional quantum cascade lasers/ photodetectors, which helps develop monolithic integration for on-chip applications. Also, with the proposed simulation tool and the aid of commercial software, a bi-functional device operating at 3 − 4 μm spectral window is designed, where the intrinsic wavelength shift is minimized while ensuring optimal performance.

Subject Keywords

Quantum cascade lasers, Quantum cascade detectors, Self consistent rate equation modelling, Unique design for 3 − 4 μm wavelength

URI

https://hdl.handle.net/11511/104512

Collections

Graduate School of Natural and Applied Sciences, Thesis