Optical microcombs represent a new paradigm for generating laser frequency combs based
on compact chip-scale devices, which have underpinned many modern technological …

We define the anisotropic structure building unit that encompasses diverse chemical bonds
(ABUCB). The ABUCB is highly likely to cause anisotropy in both crystallographic structure …

Inorganic chalcogenides have been studied as the most promising infrared (IR) nonlinear
optical (NLO) candidates for the past decades. However, it is proven difficult to discover high …

High-quality optical ring resonators can confine light in a small volume and store it for
millions of roundtrips. They have enabled the dramatic size reduction from laboratory scale …

Applications in timekee**, quantum sensing and quantum computing have sparked
growing demand for high-performance photonic integrated circuit (PIC) lasers at visible and …

Simultaneous regulation and control of non-linear second-harmonic-generation (SHG)
coefficients (d eff) and linear birefringence (Δ n) of non-centrosymmetric (NCS) crystals is a …

Increasing the energy band gap under the premise to maintain a large nonlinear optical
(NLO) response is a challenging issue for the exploration and molecular design of mid …

Materials with strong second-order (χ (2)) optical nonlinearity, especially lithium niobate,
play a critical role in building optical parametric oscillators (OPOs). However, chip-scale …

Recently, newly emerging Hg-based chalcogenides with fascinating non-centrosymmetric
(NCS) structures and superior optical properties have received wide attention as candidates …

It is substantially challenging for non‐centrosymmetric (NCS) Hg‐based chalcogenides for
infrared nonlinear optical (IR‐NLO) applications to realize wide band gap (Eg> 3.0 eV) and …