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arXiv · 2012.10383

Frequency-modulated comb in a VECSEL

Christian Kriso·Avijit Barua·Obaid Mohiuddin·Christoph Möller·Antje Ruiz-Perez·Wolfgang Stolz·Martin Koch·Arash Rahimi-Iman
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Abstract

Optical frequency combs based on mode-locked lasers have revolutionized many areas of science and technology, such as precision metrology, optical frequency synthesis or telecommunications. In recent years, a particular kind of frequency comb has been observed in edge-emitting semiconductor lasers where the phase difference between longitudinal laser modes is fixed but not zero. This results in a linearly chirped output in the time domain with nearly constant intensity. Here, by using coherent beatnote spectroscopy, we show that such a comb regime can also exist in vertical-external-cavity surface-emitting lasers (VECSELs), as evidenced for a specific part of the laser spectrum. Our findings may not only lead to a better understanding of the physics of frequency-modulated combs but also enable comb applications with high optical power per comb line and flexible emission wavelengths.

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Christian Kriso, Avijit Barua, Obaid Mohiuddin, Christoph Möller, Antje Ruiz-Perez, Wolfgang Stolz, Martin Koch, Arash Rahimi-Iman. 2020-12-18. Frequency-modulated comb in a VECSEL. https://arxiv.org/abs/2012.10383

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