E A Shcherbakov | Researchain

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Soviet Journal of Quantum Electronics | 1975

Mode conversion in a thin-film corrugated waveguide

Evgenii M Zolotov; A M Prokhorov; E A Shcherbakov

Efficient mode conversion (~70–90%) was achieved and investigated in a multimode thin-film corrugated waveguide. The corrugations were nonsinusoidal so that modes could be converted using different orders of the spatial harmonics of the corrugation grating, tuning only slightly the grating in respect of the angle. The dependences of the mode conversion efficiency on the length of the grating were determined. The experimental results were compared with the theory.

Soviet Journal of Quantum Electronics | 1974

Time characteristics of a CaF2:Dy2+ laser under single-mode and multimode conditions

Evgenii M Zolotov; E A Shcherbakov

Single-mode spike-free laser pulse emission was obtained from a CaF2:Dy2+ crystal (λ = 2.36 μ). The time characteristics of the emission were investigated under single-mode and multimode conditions. The number of modes was estimated from the structure of the far-field pattern. The pattern was calculated for a single mode generated in a plane-parallel resonator with a small Fresnel number.

Soviet Journal of Quantum Electronics | 1976