A rewritable optical disc ... In rewritable phase change media, the heat from a short, high-intensity laser pulse turns a bit in the recording layer into an unstructured "amorphous" state ...

Opaque materials can transmit light when excited by a high-intensity laser beam. This process, known as optical bleaching, ...

not the reflection of the laser light (see phase change disc). In addition, phase change memory cells are denser than optical disc cells, and they can hold more than one bit. Prototypes with ...

Spatial control of the phase and amplitude of a laser beam is useful for applications ranging from imaging and holography to interferometry and optical tweezers, reports Neil Savage. Digital ...

The phase and the group velocity of light propagating in conventional optical media cannot exceed ... the interaction with intense femtosecond laser pulses. Ionization of a polar molecular liquid ...

Scientists have demonstrated a sort of holographic strip that splits a single laser beam into five bespoke beams that create an optical knot. The work shows that optical knots could be used as a ...

Phase matching is a critical condition ... Frequency conversion expands the wavelength coverage of laser systems, enabling applications in spectroscopy, imaging, and material processing. Nonlinear ...

Since then, physicists have exploited these non-linear optics in techniques ranging from precision measurement to quantum computing. Yet, one persistent challenge has remained. Nonlinear optical ...

Multicolored optical switching is essential for potential advancements in telecommunication and optical computing. However, most materials typically exhibit only single-colored optical nonlinearity ...