Publications de Ezgi Sahin | EPFL Graph Search

Difference-frequency generation in optically poled silicon nitride waveguides

Tobias Kippenberg, Camille Sophie Brès, Rui Ning Wang, Ozan Yakar, Boris Zabelich, Junqiu Liu, Edgars Nitiss, Ezgi Sahin

Difference-frequency generation (DFG) is elemental for nonlinear parametric processes such as optical parametric oscillation and is instrumental for generating coherent light at long wavelengths, especially in the middle infrared. Second-order nonlinear fr ...

WALTER DE GRUYTER GMBH2021

Difference-frequency generation in silicon nitride waveguides based on all-optical poling

Camille Sophie Brès, Ozan Yakar, Boris Zabelich, Edgars Nitiss, Ezgi Sahin

IEEE2021

Difference frequency generation in optically poled silicon nitride waveguides

Camille Sophie Brès, Ozan Yakar, Boris Zabelich, Edgars Nitiss, Ezgi Sahin

All-optical poling leads to an effective second-order nonlinearity (chi((2))) in centrosymmetric materials without the need for sophisticated fabrication techniques or material processing, through the periodic self-organization of the charges. The absence ...

SPIE-INT SOC OPTICAL ENGINEERING2021

Thermo-optically tunable spectral broadening in a nonlinear ultra-silicon-rich nitride Bragg grating

Ezgi Sahin

Spectral tunability methods used in optical communications and signal processing leveraging optical, electrical, and acousto-optic effects typically involve spectral truncation that results in energy loss. Here we demonstrate temperature tunable spectral b ...

CHINESE LASER PRESS2021

Optical parametric gain in CMOS-compatible sub-100 mu m photonic crystal waveguides

Ezgi Sahin

Emerging compositionally engineered complementary metal-oxide-semiconductor (CMOS)-compatible platforms have been employed for high efficiencies in various on-chip applications, including optical parametric amplification and wavelength conversion. Combinin ...

2020