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We describe the performance of two lasers with homogeneously saturated gain, coupled through a central hole in a common mirror of symmetric unstable resonators. A new iterative procedure is proposed based on combining the Fox-Li and Prony methods. The suggested procedure allow us to calculate several resonator modes and find a stable phase-locked operating region for various sizes of coupling hole and small-signal gain values. Far-field patterns from combined lasers are computed for various operating regimes.
Nickolai N. Elkin,V. ok Korotkov,Vladimir V. Likhanskii,Anatoly P. Napartovich, andVera N. Troshchieva
"Stability of phase-locked lasing in a two-coupled-unstable-resonator system", Proc. SPIE 2109, CIS Selected Papers: High-Power Multibeam Lasers and Their Phase Locking, (7 October 1993); https://doi.org/10.1117/12.160377
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Nickolai N. Elkin, V. ok Korotkov, Vladimir V. Likhanskii, Anatoly P. Napartovich, Vera N. Troshchieva, "Stability of phase-locked lasing in a two-coupled-unstable-resonator system," Proc. SPIE 2109, CIS Selected Papers: High-Power Multibeam Lasers and Their Phase Locking, (7 October 1993); https://doi.org/10.1117/12.160377