Improved laser phase locking with intra-cavity adaptive optics

Phase locking of coupled lasers is severely hindered by the spread in their natural lasing frequencies. We present an intra-cavity adaptive optics method that reduces the frequency spread and thereby improves phase locking. Using an intra-cavity spatial light modulator and an iterative optimization...

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Bibliographic Details
Published inOptics express Vol. 31; no. 4; pp. 6947 - 6955
Main Authors Pando, Amit, Gadasi, Sagie, Friesem, Asher, Davidson, Nir
Format Journal Article
LanguageEnglish
Published United States 13.02.2023
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Summary:Phase locking of coupled lasers is severely hindered by the spread in their natural lasing frequencies. We present an intra-cavity adaptive optics method that reduces the frequency spread and thereby improves phase locking. Using an intra-cavity spatial light modulator and an iterative optimization algorithm, we demonstrate a fourfold enhancement of phase locking 450 coupled lasers, as quantified by the peak intensity and the inverse participation ratio of the far-field output distributions. We further show that the improvement is long-lasting, and suitable for phase locking of weakly coupled lasers.
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ISSN:1094-4087
1094-4087
DOI:10.1364/OE.482196