High-fidelity periodic poling over long lengths is required for robust, quasi-phase-matched
second-harmonic generation using the fundamental, quasi-TE polarized waveguide modes …

Established waveguide fabrication technologies on lithium niobate (LN) and potassium
titanyl phosphate (KTP) were revisited, and a comparative analysis of their performance for …

We designed, fabricated and tested gallium phosphide (GaP) nano-waveguides for second
harmonic generation (SHG). We demonstrate SHG in the visible range around 655 nm using …

The lithium-niobate-based waveguides have emerged as one of the key platforms for
enabling integrated optical technologies. The most common method for creating …

Silicon is a common material for photonics due to its favorable optical properties in the
telecom and mid-wave IR bands, as well as compatibility with a wide range of …

Optical phase conjugation (OPC) is a pivotal all-optical technique aimed at enhancing the
received signal quality by compensating for nonlinear distortions. Integrating the OPC into a …

We report a wideband optical parametric amplification (OPA) over 14 THz covering telecom
S, C, and L bands with observed maximum parametric gain of 38.3 dB. The OPA is realized …

Conventional second harmonic generation (SHG) microscopy might not clearly reveal the
structure of complex samples if the interference between all scatterers in the focal volume …

Abstract Domain-engineered quasi-phase-matching (QPM) devices are known for its
versatility and ability to tune the nonlinear optical frequency conversion process. In this …

Second-harmonic generation (SHG) using periodically poled material in the high-conversion
regime is investigated experimentally and theoretically. In the experiment, we use …