Open AccessGain-guiding in transverse grating waveguides for large modal area laser amplifiers
Author(s) -
Tsing-Hua Her
Publication year - 2008
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.16.007197
Subject(s) - optics , grating , amplifier , transverse mode , optical amplifier , waveguide , transverse plane , materials science , laser , physics , optoelectronics , structural engineering , cmos , engineering
A new optically pumped waveguide amplifier with ultra-large mode area is proposed. This amplifier is based on gain guiding in a transverse grating waveguide in which the pump is confined by the photonic bandgap while the signal is guided by optical gain. Characteristics of the propagating modes of the waveguide amplifier are analyzed theoretically using the transfer matrix method, indicating robust single-transverse-mode operation with large modal gain.