Abstract

The effect of laser polarization and crystalline orientation on nanoscale morphology of ZnO monocrystal has been studied in the regime of high-density electronic excitation related to the saturation of the exciton fluorescence and appearance of the electron-hole plasma continuum. The irradiation with femtosecond KrF laser (248 nm, 450 fs) was realized in the sub-melting regime of fluences about a half of the ablation threshold. Two types of nanostructures were observed: holes of 10 nm diameter arranged in quasi-periodic zigzag and straight lines, which propagate along the crystalline planes a, c, and m. The nanostructuring sensitively depends on the crystalline plane’s orientation to laser electric field polarization (p¯). In crystalline planes c and m, the zigzag and straight lines propagate along the crystalline cell axes with respectively small (30°) and large (90°) inclination to p¯. The nanostructuring in the crystalline plane a is rare and of low intensity. This behavior can be related to a stress field due to an accumulation of space charges in the crystalline structure.

© 2014 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Femtosecond UV laser non-ablative surface structuring of ZnO crystal: impact on exciton photoluminescence

Luc Museur, Jean-Pierre Michel, Patrick Portes, Apostolis Englezis, Andreas Stassinopoulos, Demetrios Anglos, and Andrei V. Kanaev
J. Opt. Soc. Am. B 27(3) 531-535 (2010)

Enhanced upconversion luminescence from ZnO/Zn hybrid nanostructures induced on a Zn foil by femtosecond laser ablation

Hui Li, Cheng-Yun Zhang, Xian-Feng Li, Jin Xiang, Shao-Long Tie, and Sheng Lan
Opt. Express 23(23) 30118-30126 (2015)

Scattering effects and high-spatial-frequency nanostructures on ultrafast laser irradiated surfaces of zirconium metallic alloys with nano-scaled topographies

Chen Li, Guanghua Cheng, Xxx Sedao, Wei Zhang, Hao Zhang, Nicolas Faure, Damien Jamon, Jean-Philippe Colombier, and Razvan Stoian
Opt. Express 24(11) 11558-11568 (2016)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (6)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription