Summary form only given. High power 1550 nm InGaAsP/InP single-frequency distributed-feedback lasers with record output powers are reported. Ex-facet power levels of 440 mW and single-mode fiber power ...

Uranium enrichment concentrates one specific type of the atom to create a substance that can generate massive amounts of energy.

Enrichment can make uranium more useful for the development of nuclear weapons, since natural uranium doesn’t have enough uranium-235 to work well in reactors or weapons.

This high grade works in nuclear weapons because it can sustain a fast, uncontrolled chain reaction, which releases a large amount of energy compared with the other isotopes. Uranium’s varied powers ...