The PSF for astronomical telescopes and instruments depends not only on geometric aberrations and scalar wave diffraction but also on those wavefront errors introduced by the physical optics and the ...

A new patterned spintronic emitter enables room-temperature control of terahertz wave polarization.

A revolutionary new spintronic device developed in China enables powerful, precise control of terahertz (THz) wave ...

Researchers from Beihang University in China have created a spintronic THz emitter with a microscale stripe pattern that ...

THz waves hold great promise, but to harness them effectively, their polarization (the direction in which the waves vibrate) must be controlled. Polarization control is crucial for optimizing THz ...

THz waves hold great promise, but to harness them effectively, their polarization (the direction in which the waves vibrate) must be controlled. Polarization control is crucial for optimizing THz ...

By rotating the half-wave plate in 45° increments, a geometric phase gradient is produced, separating the reflection angles of light with the same polarization state as the incident circularly ...