Shaping optic for diode light sheets

摘要

A shaping optic for diode light sheets. The Fresnel cylinder lens has a plurality of facets that channel multiple light sheet output from a diode stack having arbitrary pitch and diode bar number into a gaussian pump light deposition profile within a laser gain medium. In a specific embodiment, the lens is formed of fused silica or BK7 glass covered with broad angle anti-reflection coating, and the vertical extent of the facets is matched to the pitch spacing of the diode.