Higher-order modes reduce absorption-induced thermal deformation in high-power interferometers, cutting optimal curvature correction to 33% for LG2,2 and 24% for HG3,3 versus the fundamental mode while improving optical loss and modal purity.
Oelkeret al., Demonstration of 4.8×10−17 stability at 1 s for two independent optical clocks, Nature Photon
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Thermal Deformation Reduction in High-Power Interferometry with Higher-Order Laser Modes
Higher-order modes reduce absorption-induced thermal deformation in high-power interferometers, cutting optimal curvature correction to 33% for LG2,2 and 24% for HG3,3 versus the fundamental mode while improving optical loss and modal purity.