BACKGROUND Optical vortices provide one of the promising solutions for enhancing the
capacity of data multiplexing to meet an unprecedented growth in big data and internet traffic …

The quality factor (Q), describing the rate of energy loss from a resonator, is a defining
performance metric for nanophotonic devices. Suppressing cavity radiative losses enables …

The orbital angular momentum (OAM) intrinsically carried by vortex light beams holds a
promise for multidimensional high-capacity data multiplexing, meeting the ever-increasing …

Photons that have a helical phase front, that is, twisted photons, can carry a discrete, in
principle, unlimited, but quantized amount of orbital angular momentum (OAM). Hence …

On-chip photon sources carrying orbital angular momentum (OAM) are in demand for high-
capacity optical information processing in both classical and quantum regimes. However …

Vertical cavity surface emitting lasers (VCSELs) have emerged as a versatile and promising
platform for develo** advanced integrated photonic devices and systems due to their low …

Optical skyrmion beams, which encompass a two-dimensional topology in their spatial
structures, are promising candidates for ultra-dense optical communications and advanced …

Since the second half of the 20th century, ideas to develop methods for the formation of
optical vortices (OVs) or OV beams–regions of circular motion of energy flow in an …

Vertical-cavity surface-emitting lasers (VCSELs) represent an attractive light source to
integrate with OAM structures to realize chip-scale vortex lasers. Although pioneering …

On-chip integrated laser sources of structured light carrying fractional orbital angular
momentum (FOAM) are highly desirable for the forefront development of optical …