论文信息 - Flattening of spatial laser beam profile with low losses and minimal beam divergence.

Flattening of spatial laser beam profile with low losses and minimal beam divergence.

A new type of Nd:YAG laser is described that uses two spatial filters that are placed against the mirrors in the focal planes of a converging lens (Fourier planes). With the appropriate filters, we experimentally obtained a uniphase beam with a flat spatial profile and minimal beam divergence in the free-running regime.

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