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Laser-induced epitaxial recrystallization after alkali-ion implantion into α-quartz
S. Ga̧siorek, , K.P. Lieb, P. Schaaf
Published in Elsevier
Volume: 247
Issue: 1-4
Pages: 396 - 400
Ion implantation and recrystallization of quartz may be a very important process for photonic applications. We have investigated how laser irradiation can be used to epitaxially recrystallize layers of α-quartz, which were amorphized by 175 keV Rb + or 250 keV Cs + ion implantation at a fluence of 2.5 × 10 16 cm -2 . The samples were irradiated with pulses of a XeCl excimer laser (wavelength 308 nm, pulse length 55 ns, energy density 3.2-5 J/cm 2 ). The thickness of the amorphous layer and the quality of the recrystallized layer were analyzed by Rutherford Backscattering Channeling Spectroscopy. Partial epitaxial recrystallization was found for all laser-irradiated samples that proceeded faster for higher laser energy density, however no full epitaxy was achieved up to the maximum laser energy of 5 J/cm 2 . The degree of epitaxy was more or less the same for 20 or 200 laser shots. © 2005 Elsevier B.V. All rights reserved.
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