Flat optics has emerged as a key player in the area of structured light and its applications,
owing to its subwavelength resolution, ease of integration, and compact footprint. Although …

Optical metasurfaces—subwavelength-patterned surfaces that interact strongly with light—
have been an active area of research for more than a decade. The field has been driven by …

Freeform optics aims to expand the toolkit of optical elements by allowing for more complex
phase geometries beyond rotational symmetry. Complex, asymmetric curvatures are …

The polarization of light is crucial for numerous optical applications ranging from quantum
information processing to biomedical sensing due to the fundamental role of polarization as …

Metasurface-based optical elements typically manipulate light waves by imparting space-
variant changes in the amplitude and phase with a dense array of scattering nanostructures …

Replacing curved and bulky optical elements with thin and lightweight counterparts is a
persistent pursuit of the optical society. Metasurfaces, as two-dimensional artificial …

Any arbitrary state of polarization of light beam can be decomposed into a linear
superposition of two orthogonal oscillations, each of which has a specific amplitude of the …

The depth of focus of an imaging system determines the range of change for both the
position of focal plane and image plane. Although a typical light sword optical element with …

Optical metasurfaces with subwavelength thickness hold considerable promise for future
advances in fundamental optics and novel optical applications due to their unprecedented …

BACKGROUND Future high-performance portable and wearable optical devices and
systems with small footprints and low weights will require components with small form …