Linewidth Enhancement Factor of Mid-IR Quantum Cascade Lasers
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2021
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Other Conference Item
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yes
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Abstract
Schawlow and Townes theorized that the ratio between the spontaneous emission and stimulated emission in a semiconductor laser defines its linewidth lower limit [1] . However, experiments showed that this intrinsic linewidth is larger, which was later demonstrated to be due to the coupling between the optical gain and the phase noise [2] . The linewidth enhancement factor (LEF) was introduced to quantify this process and as a correction to the linewidth formula in [1] .
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published
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2021 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)
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9541864
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IEEE
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2021 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO®/Europe - EQEC 2021)
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03759 - Faist, Jérôme / Faist, Jérôme
02510 - Institut für Quantenelektronik / Institute for Quantum Electronics