We conducted Z-scan measurements using ultrashort high-repetition-rate lasers and spectroscopic-grade fused-quartz cuvettes that had undergone macroscopic laser-induced damage in the course of the measurements. Visual observation of increased scattering of the laser beam from the damaged sites and Nomarski microscope images showing changes in the morphology of the damaged regions were used as the criteria for damage. Intensity- dependent open- and closed-aperture Z-scan studies produced profiles that are characteristic of the extent of the damage. The appearance of these unique signatures in any high-repetition-rate Z-scan measurement is a useful marker for timely recognition of occasional collateral damages that are associated with this type of study.
© 2011 Optical Society of America
Original Manuscript: November 23, 2010
Revised Manuscript: April 8, 2011
Manuscript Accepted: April 8, 2011
Published: May 13, 2011
Vol. 6, Iss. 7 Virtual Journal for Biomedical Optics
Raymond Edziah, Elaine Lalanne, Victor Torres, Anthony M. Johnson, and Sudhir Trivedi, "Z-scan measurements using ultrashort high-repetition-rate lasers: how to recognize the parasitic effects of nonlinear behavior of fused-silica damage sites," J. Opt. Soc. Am. B 28, 1385-1390 (2011)