Cross-sectional study of periodic surface structures on gallium phosphide induced by ultrashort laser pulse irradiation

Journal Article · Mon Jun 02 00:00:00 EDT 2008 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.2936865· OSTI ID:21120767

Hsu, E M; Crawford, T H. R. ^[1]; Maunders, C; Botton, G A ^[2]; Haugen, H K ^[3]

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1. Department of Engineering Physics, McMaster University, Hamilton, Ontario L8S 4L7 (Canada)
2. Department of Materials Science and Engineering, McMaster University, Hamilton, Ontario L8S 4L7 (Canada)
3. Department of Engineering Physics and Department of Physics and Astronomy, McMaster University, Hamilton, Ontario L8S 4L7 (Canada)

We present cross-sectional transmission electron microscopy studies of laser induced periodic surface structures (LIPSS) formed on gallium phosphide after irradiation with ultrashort laser pulses with a pulse duration of 150 fs and centered at a wavelength of 800 nm. LIPSS with spatial periods ({approx}165 nm) substantially smaller than the incident wavelength are found to have vertical profiles as high as {approx}960 nm measured from the crest to the trough. The present observations provide important insights into the formation mechanisms of subwavelength LIPSS.

• OSTI ID: 21120767
• Journal Information: Applied Physics Letters, Vol. 92, Issue 22; Other Information: DOI: 10.1063/1.2936865; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
GALLIUM PHOSPHIDES
PERIODICITY
PULSED IRRADIATION
SOLID STATE LASERS
SURFACES
TRANSMISSION ELECTRON MICROSCOPY
WAVELENGTHS