Open AccessSimultaneous perfect phase matching for second and third harmonic generations in ZnS/YF3photonic crystal for visible emissions
Author(s) -
WenZhong Lu,
Ping Xie,
Zhao-Qing Zhang,
George K. Wong,
Kam Sing Wong
Publication year - 2006
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.14.012353
Subject(s) - photonic crystal , second harmonic generation , optics , photonics , materials science , nonlinear optics , dispersion (optics) , phase matching , phase (matter) , harmonic , surface second harmonic generation , optoelectronics , physics , laser , quantum mechanics
Theoretically designed and experimentally realized simultaneous perfect phase matching of second and third harmonic generations were demonstrated in a one-dimensional ZnS/YF(3) photonic crystal (PC) structure. Dramatic enhancement of second harmonic generation (SHG) and third harmonic generation (THG) in forward and backward directions near the photonic band edge were observed. This enhancement came from a combination of large ZnS nonlinear susceptibility coefficients, high density of optical modes and perfect phase matching of the fundamental and the harmonic waves near the photonic band edge due to modification of the dispersion curve by the PC structure. Total SHG and THG conversion efficiency over 4% is measured in only six micrometers length of photonic crystal. Theoretical calculations show good agreement with experimental measurements.