Orbital angular momentum boosts multiplexed holography

Optical holography is a powerful method for recording and reconstructing complete optical field information, including intensity and phase. It has found extensive applications in various fields, such as optical display, imaging, ...

Video: Hera Propulsion Module leak test, in time-lapse

ESA's Hera mission for planetary defense will perform a close-up survey of the Dimorphos asteroid in deep space. But first Hera needs to cross millions of kilometers of space to get there. That is the task of Hera's Propulsion ...

Gravity goes lunar: Putting LESA to the test

Looking to the not-too-distant future when the European Service Module will propel European astronauts in the Orion spacecraft to the Gateway and on to the surface of the moon, scientists and engineers are eagerly exploring ...

Handing over European service module for Artemis II

Yesterday, ESA formally gave possession of the second European Service Module to NASA for the Artemis II mission that will see four astronauts circle our moon and return to Earth.

Optically controlled metasurfaces for dynamic dual-mode modulation

Dynamic control of terahertz (THz) waves at will with an ultra-compact device is important for THz technologies in biomedical imaging, telecommunications, detection, and beyond. However, tunable THz devices made of conventional ...

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