Modeling antimonite-based distributed feedback lasers for carbon-dioxide gas sensing

Meng-Mu Shih

doi:10.1117/12.920093

11 May 2012 Modeling antimonite-based distributed feedback lasers for carbon-dioxide gas sensing

Meng-Mu Shih

Proceedings Volume 8371, Sensing Technologies for Global Health, Military Medicine, Disaster Response, and Environmental Monitoring II; and Biometric Technology for Human Identification IX; 83711C (2012) https://doi.org/10.1117/12.920093
Event: SPIE Defense, Security, and Sensing, 2012, Baltimore, Maryland, United States

Abstract

This work shows the process of computing coupling coefficients of first-order distributed feedback (DFB) metalsemiconductor quantum-well lasers. For the gas sensing of carbon dioxide (CO₂), the antimonite-based (Sb-based) DFB lasers at the wavelength of 2 μm are discussed. The optical waveguide structure, for each laser, has a built-in grating interface between the metal and semiconductor layers. This work considers the interface with sinusoidal corrugation geometry for preliminary modeling and computation. To compute the coupling coefficient of the metal-grating waveguide, a photonic method, Floquet-Bloch method (FB), is used for the waveguide with such a corrugated semiconductor-metal interface. The optical method, the Ray-optics method (RO), is also used for computation. Both the photonic and the optical methods have close results.

Citation Download Citation

Meng-Mu Shih "Modeling antimonite-based distributed feedback lasers for carbon-dioxide gas sensing", Proc. SPIE 8371, Sensing Technologies for Global Health, Military Medicine, Disaster Response, and Environmental Monitoring II; and Biometric Technology for Human Identification IX, 83711C (11 May 2012); https://doi.org/10.1117/12.920093

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