by Simen M. Martinussen, Raimond N. Frentrop, Meindert Dijkstra, Frans Segerink, Victoria Tormo-Márquez, José Olivares and Sonia M. Garcia-Blanco
Abstract:
KY(WO4)2 is an attractive material for integrated photonics due to its high refractive index and excellent non-linear and gain characteristics. High refractive index contrast structures increase light-matter interaction, reducing the threshold for lasing and non-linear effects. Furthermore, high refractive index contrast permits dispersion engineering for non-linear optics. In this work, we present a novel fabrication method to realize pedestal microdisk resonators in crystalline KY(WO4)2 material. The fabrication process includes swift heavy ion irradiation of the KY(WO4)2 with 9 MeV carbon ions and sufficient fluence (>2.7·1014 ion/cm2) to create a buried amorphous layer. After annealing at 350° C, microdisks are defined by means of focused ion beam milling. A wet etching step in hydrochloric acid selectively etches the amorphized barrier producing a pedestal structure. The roughness of the bottom surface of the disk is characterized by atomic force microscopy.
Reference:
Simen M. Martinussen, Raimond N. Frentrop, Meindert Dijkstra, Frans Segerink, Victoria Tormo-Márquez, José Olivares and Sonia M. Garcia-Blanco, “Pedestal microdisks in potassium yttrium double tungstate”, Optical Materials Express, vol. 9, no. 8, pp. 3371–3378.
Bibtex Entry:
@article{martinussen_pedestal_2019,
title = {Pedestal microdisks in potassium yttrium double tungstate},
volume = {9},
copyright = {© 2019 Optical Society of America},
issn = {2159-3930},
url = {https://www.osapublishing.org/ome/abstract.cfm?uri=ome-9-8-3371},
doi = {10.1364/OME.9.003371},
abstract = {KY(WO4)2 is an attractive material for integrated photonics due to its high refractive index and excellent non-linear and gain characteristics. High refractive index contrast structures increase light-matter interaction, reducing the threshold for lasing and non-linear effects. Furthermore, high refractive index contrast permits dispersion engineering for non-linear optics. In this work, we present a novel fabrication method to realize pedestal microdisk resonators in crystalline KY(WO4)2 material. The fabrication process includes swift heavy ion irradiation of the KY(WO4)2 with 9 MeV carbon ions and sufficient fluence (>2.7·1014 ion/cm2) to create a buried amorphous layer. After annealing at 350° C, microdisks are defined by means of focused ion beam milling. A wet etching step in hydrochloric acid selectively etches the amorphized barrier producing a pedestal structure. The roughness of the bottom surface of the disk is characterized by atomic force microscopy.},
language = {EN},
number = {8},
urldate = {2019-11-22},
journal = {Optical Materials Express},
author = {Martinussen, Simen M. and Frentrop, Raimond N. and Dijkstra, Meindert and Segerink, Frans and Tormo-Márquez, Victoria and Olivares, José and Garcia-Blanco, Sonia M.},
month = aug,
year = {2019},
keywords = {Refractive index, Ion beams, Waveguide lasers, Gradient index optics, Laser materials, Raman lasers},
pages = {3371--3378},
file = {Full Text PDF:E:\Usuarios\Administrator\Zotero\storage\9QLCHNRV\Martinussen et al. - 2019 - Pedestal microdisks in potassium yttrium double tu.pdf:application/pdf;Snapshot:E:\Usuarios\Administrator\Zotero\storage\38UTTKK6\abstract.html:text/html},
}