A laser-etched micro-pyramid coating on a curved alumina lens raises millimeter-wave transmittance by a factor of about 1.8, extending an anti-reflection technique from flat disks to lens surfaces.
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Laser ablated sub-wavelength structure anti-reflection coating on an alumina lens
A laser-etched micro-pyramid coating on a curved alumina lens raises millimeter-wave transmittance by a factor of about 1.8, extending an anti-reflection technique from flat disks to lens surfaces.