Multistage Diode-Pumped Nd:YAG Optical Amplifier with Correction of Amplified Laser Beam by Thermally Induced Lenses of Active Elements

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发表日期：

2024年7月5日

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M. V. Bogdanovich,
A. V. Grigor’ev,
V. N. Dudikov,
A. G. Ryabtsev,
G. I. Ryabtsev,
P. O. Tatura,
L. L. Teplyashin,
G. S. Boltaev

摘要

The characteristics of an Nd:YAG multistage optical amplifier of a laser beam, the spatial parameters of which were corrected by thermal lenses formed in the active elements of each amplifier stage, were studied. Nd:YAG crystals transverse-pumped by laser diode units were used as the amplifier active elements. Removal of lens-compensators was shown to reduce the total optical losses of the amplifier and enhance its compactness. The optical losses of an optical amplifier with five amplification stages and correction of the amplified beam characteristics by thermally induced lenses of active elements were 16%; its linear dimensions, 13% less than similar indicators for a five-stage amplification system with four two-lens compensators between amplification stages.