Second harmonic generation from precise diamond blade diced ridge waveguides
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2022-02-07 |
| Journal | Chinese Physics B |
| Authors | Hui Xu, Ziqi Li, Chi Pang, Rang Li, Genglin Li |
| Institutions | State Key Laboratory of Crystal Materials, Helmholtz-Zentrum Dresden-Rossendorf |
| Citations | 7 |
Abstract
Section titled āAbstractāCarbon ion irradiation and precise diamond blade dicing are applied to fabricate Nd:GdCOB ridge waveguides. The propagation properties of the fabricated Nd:GdCOB waveguides are investigated through experiments and theoretical analysis. Micro-Raman analysis reveals that the Nd:GdCOB crystal lattice expands during the irradiation process. Micro-second harmonic spectroscopic analysis suggests that the original nonlinear properties of the Nd:GdCOB crystal are greatly enhanced within the waveguide volume. Under pulsed 1064 nm laser pumping, second harmonic generation (SHG) at 532 nm has been achieved in the fabricated waveguides. The maximum SHG conversion efficiencies are determined to be ā¼ 8.32 %ā W ā1 and ā¼ 22.36 %ā W ā1 for planar and ridge waveguides, respectively.