65 citations · 147 across the 8 of their papers we have counts for
8 papers
Demonstration of the DC-Kerr Effect in Silicon-Rich Nitride
Alex Friedman, Hani Nejadriahi, Rajat Sharma +1
We demonstrate the DC-Kerr effect in PECVD Silicon-rich Nitride (SRN) and use it to demonstrate a third order nonlinear susceptibility, \c{hi}^((3)), as high as (6 +/- 0.58)x10-19…
Thermo-Optic Properties of Silicon-Rich Silicon Nitride for On-chip Applications
Hani Nejadriahi, Alex Friedman, Rajat Sharma +3
We demonstrate the thermo-optic properties of silicon-rich silicon nitride (SRN) films deposited using plasma-enhanced chemical vapor deposition (PECVD). Shifts in the spectral res…
On observation of dispersion in tunable second-order nonlinearities of silicon-rich nitride thin films
Hung-Hsi Lin, Rajat Sharma, Alex Friedman +5
We present experimental results on second-harmonic generation in non-stoichiometric, silicon-rich nitride (SRN) films. The as-deposited film presents a second-order nonlinear coeff…
Electronic Metamaterials with Tunable Second-order Optical Nonlinearities
Hung-Hsi Lin, Felipe Vallini, Mu-Han Yang +6
The ability to engineer metamaterials with tunable nonlinear optical properties is crucial for nonlinear optics. Traditionally, metals have been employed to enhance nonlinear optic…
Observation of second-harmonic generation in silicon nitride waveguides through bulk nonlinearities
Matthew W. Puckett, Rajat Sharma, Hung-Hsi Lin +3
We present experimental results on the observation of a bulk second-order nonlinear susceptibility derived from both free-space and integrated measurements in silicon nitride. Phas…
Capacitively-Induced Free-Carrier Effects in Nanoscale Silicon Waveguides for Electro-Optic Modulation
Rajat Sharma, Matthew W. Puckett, Hung-Hsi Lin +3
We fabricate silicon waveguides in silicon-on-insulator (SOI) wafers clad with either silicon dioxide, silicon nitride, or aluminum oxide, and by measuring the electro-optic behavi…
Silicon Nanoridge Array Waveguides for Nonlinear and Sensing Applications
Matthew W. Puckett, Rajat Sharma, Felipe Vallini +6
We fabricate and characterize waveguides composed of closely spaced and longitudinally oriented silicon ridges etched into silicon-on-insulator wafers. Through both guided mode and…
Characterizing the effects of free carriers in fully-etched, dielectric-clad silicon waveguides
Rajat Sharma, Matthew W. Puckett, Hung-Hsi Lin +2
We theoretically characterize the free-carrier plasma dispersion effect in fully-etched silicon waveguides, with various dielectric material claddings, due to fixed and interface c…