Vector rectangular-shape laser based on reduced graphene oxide interacting with long fiber taper
Abstract
A vector dual-wavelength rectangular-shape laser (RSL) based on a long fiber taper deposited with reduced graphene oxide is proposed, where the nonlinearity is enhanced due to large evanescent-field-interacting length and strong field confinement of a 8 mm fiber taper with a waist diameter of 4 micronmeters. Graphene flakes are deposited uniformly on the taper waist with light pressure effect, so this structure guarantees both excellent saturable absorption and high nonlinearity. The RSL with a repetition rate of 7.9 MHz exhibits fast polarization switching in two orthogonal polarization directions, and the temporal and spectral characteristics are investigated. The results suggest that the long taper-based graphene structure is an efficient choice for nonlinear devices.
Cite
@article{arxiv.1404.3400,
title = {Vector rectangular-shape laser based on reduced graphene oxide interacting with long fiber taper},
author = {Lei Gao and Tao Zhu and Jing Zeng and Wei Huang and Min Liu},
journal= {arXiv preprint arXiv:1404.3400},
year = {2015}
}