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18 June 2002 Fabrication of birefringent microstructures in transparent materials with femtosecond laser pulses
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Proceedings Volume 4637, Photon Processing in Microelectronics and Photonics; (2002) https://doi.org/10.1117/12.470622
Event: High-Power Lasers and Applications, 2002, San Jose, California, United States
Abstract
When femtosecond laser pulses are tightly focused inside the bulk of transparent materials, the intensity in a focal volume become high enough to produce submicrometer-scale structural modifications. The modifications has been applied to fabricate 3D photonic structures. Tightly-focused femtosecond laser pulses create voids, which are surrounded by densified material. In this paper we show that the shapes of voids can be controlled by the spatial profile of incident laser pulse. We also show that the diffraction intensities due to the fabricated arrays of voids depend on the polarization-states of the readout beam. Finally, we demonstrate that irradiation of femtosecond laser pulses moves a void inside calcium fluoride and silica glass without any mechanical translations of the optical system. In situ observation revealed that a void moves towards incident direction of laser pulses as long as 2 micron.
© (2002) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Wataru Watanabe, Kazuhiro Yamada, Daisuke Kuroda, Taishi Shinagawa, Taishi Asano, Junji Nishii, and Kazuyoshi Itoh "Fabrication of birefringent microstructures in transparent materials with femtosecond laser pulses", Proc. SPIE 4637, Photon Processing in Microelectronics and Photonics, (18 June 2002); https://doi.org/10.1117/12.470622
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