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oe1(光电查) - 科学论文

2 条数据
?? 中文（中国） ▾

  • Inducing tunable single-mode operation of Fabry-Perot semiconductor laser coupled with very-short cavity with selective optical feedback

    摘要： We report on achieving tuned single mode operation of a multimode semiconductor laser by coupling it to a very-short external cavity with selective feedback. We show that the induced uniform feedback light from the very-short external cavity can induce single-mode oscillation over a broad range of optical feedback. Then by applying selective external to the optimum settings of the single-mode oscillation, we predict tuning of the single-mode output over a wavelength range of ~ 20 nm by detuning the peak wavelength of optical feedback from the central wavelength of the modal gain. The study is based on modeling of the dynamics of multimode semiconductor laser subject to selective optical feedback. The model takes into account mechanisms of both self- and cross-modal gain suppression, and the study is concerned with the very-short external cavity that corresponds to stable continuous-wave (CW) operation.

    关键词： Optical feedback,Semiconductor laser,Multimode laser,Optical gain

    更新于2025-09-23 15:21:01

  • Simple intra-cavity beam shaping for generating a shape-invariant flat-top laser beam

    摘要： Simple intra-cavity beam shaping for generating a shape-invariant flat-top laser beam

    关键词： shape invariant beam,transverse modes,beam shaping,multimode laser,flat-top

    更新于2025-09-16 10:30:52