Graduation Semester and Year

2015

Language

English

Document Type

Thesis

Degree Name

Master of Science in Electrical Engineering

Department

Electrical Engineering

First Advisor

Michael Vasilyev

Abstract

We experimentally investigate the spatial-mode-selective frequency up-conversion by sum-frequency generation in a second-order medium. In particular, we are interested in zero and first order Gaussian modes. In our experiment, we generate pump and signal pulses of 400 ps duration, spatially modulate them, and couple them into a Periodically Poled Lithium Niobate (PPLN) waveguide. Only one signal mode selected by the pump’s spatial profile is up-converted. The up-converted signal is separated from the original signal and pump beams, modes are captured on a camera and efficiency of up-conversion is recorded. We also discuss some important phase-matching conditions for nonlinear interaction in medium. This experiment results will help build spatial-mode de-multiplexers for both classical and quantum communication.

Keywords

Spatial-mode-de-multiplexing, Frequency up-conversion, Nonlinear optics

Disciplines

Electrical and Computer Engineering | Engineering

Comments

Degree granted by The University of Texas at Arlington

Download

Share

COinS