Nature, Published online: 05 November 2025; doi:10.1038/s41586-025-09665-w
A multipass optical parametric amplifier leverages dispersion-engineered dielectric mirrors to overcome the gain versus bandwidth trade-off and achieve broadband amplification with high gain within a compact device.
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The practice of separating children from their parents and resulting consequences continue to be current concerns. In spite of the previous court order, families are still being separated at the border.
Separating children from their parents while attempting to cross from Mexico into the United States without authorization often also means separation from the family. Both have adverse affects on the children and parents, the family and future generations.
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