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Journal Articles Scientific Reports Year : 2024

Time localized tilted beams in nearly-degenerate laser cavities

Abstract

We show that nearly-degenerate Vertical External-Cavity Surface-Emitting Lasers may emit a set of tilted beams of individually addressable mode-locked pulses. These time localized beams feature a Gaussian profile and they are emitted in pairs with opposite transverse k-vector. Because they are phase locked, their interference leads to a non homothetic pattern in the near-field emission of the laser. In the simplest situation, when a single pair is emitted, this is a stripe pattern. Our analysis discloses the role of third order (spherical) aberrations of the cavity in stabilizing this spatio-temporal mode-locked regime and in selecting the value of the transverse k-vector.
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hal-04588695 , version 1 (27-05-2024)

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A. Bartolo, N. Vigne, M. Marconi, G. Beaudoin, K. Pantzas, et al.. Time localized tilted beams in nearly-degenerate laser cavities. Scientific Reports, 2024, 14, pp.9852. ⟨10.1038/s41598-024-60466-z⟩. ⟨hal-04588695⟩
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