Photoacoustic shock wave emission and cavitation from structured optical fiber tips

• Main Authors: Wang, Xincai, Mohammadzadeh, M., Gonzalez-Avila, Silvestre Roberto, Zheng, Hongyu, Ohl, Claus Dieter, Wan, Y. C.
• Other Authors: School of Physical and Mathematical Sciences
• Format: Article
• Language: English
• Published: 2016
• Subjects: Physical and Mathematical Sciences
• Online Access: https://hdl.handle.net/10356/82332; http://hdl.handle.net/10220/39949
• Institution: Nanyang Technological University

Photoacoustic waves generated at the tip of an optical fiber consist of a compressive shock wave followed by tensile diffraction waves. These tensile waves overlap along the fiber axis and form a cloud of cavitationbubbles. We demonstrate that shaping the fiber tip through micromachining alters the...