Some Insights on Kerr Lensing Effects

The research on high-order transverse modes in lasers was largely abandoned a few years after the invention of the laser in 1960. The main reason for this was that high-order beams are more divergent and less bright than the Gaussian beam. In the present paper, we showed that the behaviour of LGp0 b...

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Bibliographic Details
Published inPhotonics Vol. 12; no. 6; p. 596
Main Authors Aït-Ameur, Kamel, Hasnaoui, Abdelkrim
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.06.2025
Subjects
Approximation
breakup integral
Electric fields
focusability
Gaussian beams (optics)
Gravitational waves
High power lasers
high-intensity amplification
high-order transverse modes
Kerr effects
Lasers
nonlinear lensing effect
Optical limiters
Propagation
Florida
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Summary:The research on high-order transverse modes in lasers was largely abandoned a few years after the invention of the laser in 1960. The main reason for this was that high-order beams are more divergent and less bright than the Gaussian beam. In the present paper, we showed that the behaviour of LGp0 beams faced to the optical Kerr effect (OKE) varies considerably depending on the mode order (p = 0 or p≥1). We focused our attention on the properties of LG00 and LG10 beams when subject to OKE, and we found that the LG10 beam keeps its focusability much better than the LG00 beam. This property has at least two applications concerning first the conception of high-intensity laser chains not based on a Gaussian beam but on an LG10 beam and second, the use of an LG10 beam instead of the usual Gaussian beam which can reduce drastically the protection of optical limiters based on OKE; this constitutes a counter-measure against such limiters.
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ISSN:2304-6732
2304-6732
DOI:10.3390/photonics12060596