We present a brief introduction to the orbital angular momentum of light, the subject of our theme issue and, in particular, to the developments in the 13 years following the founding paper by Allen ...

Goluj — The NUEW branch in Goluj sub-zone indicated that the introduction of smoke-free stove Adhanet has gained momentum in the locality in line with the growing awareness on the part of women to ...

The efficiency of a nonlinear optical frequency conversion process is generally limited by material dispersion. Dispersion results in a mismatch of the momenta in many energy-conserving multiphoton ...

Momentum investing remains a cornerstone of systematic equity strategies, and our recent research shows it is one deserving ...