Pulse width effect in ultrafast laser ionization imaging
Optics Letters, Vol. 33, Issue 21, pp. 2467-2469 (2008)
http://dx.doi.org/10.1364/OL.33.002467
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Abstract
The effects of different laser pulse widths on laser-induced ionization imaging of microstructures embedded in transparent materials are investigated. It is shown that a femtosecond laser-induced ionization probe can detect the variation of elemental composition of the sample materials with a higher contrast ratio, whereas the ionization probe generated by picosecond laser pulses is more sensitive to the structural change inside optical materials, which can be well explained by the different roles of multiphoton ionization and avalanche ionization involved in material breakdown. These results also suggest that an optimum diagnosis could be obtained if well-selected laser parameters are employed in ultrafast laser ionization imaging.
© 2008 Optical Society of America
OCIS Codes
(190.1900) Nonlinear optics : Diagnostic applications of nonlinear optics
(320.7110) Ultrafast optics : Ultrafast nonlinear optics
(350.3390) Other areas of optics : Laser materials processing
(180.4315) Microscopy : Nonlinear microscopy
ToC Category:
Microscopy
History
Original Manuscript: July 11, 2008
Revised Manuscript: September 9, 2008
Manuscript Accepted: September 12, 2008
Published: October 22, 2008
Citation
Y. Zhao, Y. Liang, N. Zhang, M. Wang, and X. Zhu, "Pulse width effect in ultrafast laser ionization imaging," Opt. Lett. 33, 2467-2469 (2008)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-33-21-2467
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