[IPp-08] Observation of ultrasound generated by a focused femtosecond laser pulse on a material using in-line Mach-Zehnder interferometer
implemented with diffractive gratings
Ultrasound is generated when a femtosecond laser pulse is focused on a material surface. The ultrasound contains useful information of laser irradiation condition, laser matter interactions, and fabricated structures. The ultrasound is measured by a Mach-Zehnder interferometer implemented with
grating beam splitters, which has a feature of high stability against an external disturbance because of its in-line arrangement.
grating beam splitters, which has a feature of high stability against an external disturbance because of its in-line arrangement.
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