AI Article Synopsis
- Many laser applications need specific light patterns for best results, and some even benefit from changing patterns over time.
- This study introduces a new design for a zoom XY-beam expander that uses movable freeform optics to adjust the size of the beam in both the x and y directions at the same time.
- Unlike traditional beam expanders that rely on rotating cylindrical lenses and can be bulky, this freeform design is more compact while maintaining high optical performance across various magnifications.
Article Abstract
Many laser applications require specific irradiance distributions to ensure optimal performance. In addition, some applications can benefit from time-varying distributions. In this work, we present the analytic design of a zoom XY-beam expander based on movable freeform optics that allows to simultaneously vary the magnification in x- and y-direction, respectively. This concept is not new: the new is to design and optimally exploit freeform lenses to achieve such an optical functionality. In comparison with zoom beam expanders that use combinations of rotated cylindrical lenses, a freeform system can be more compact, yet achieving excellent overall optical performance throughout the full zoom range.
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| http://dx.doi.org/10.1364/OE.23.030438 | DOI Listing |
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