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Université Jean Monnet – Saint-Etienne |  |
Journal articles
Dynamic ultrafast laser spatial tailoring for parallel micromachining of photonic devices in transparent materials
Abstract : Femtosecond laser processing of bulk transparent materials can generate localized positive changes of the refractive index. Thus, by translation of the laser spot, light-guiding structures are achievable in three dimensions. Increasing the number of laser processing spots can consequently reduce the machining effort. In this paper, we report on a procedure of dynamic ultrafast laser beam spatial tailoring for parallel photoinscription of photonic functions. Multispot operation is achieved by spatially modulating the wavefront of the beam with a time-evolutive periodical binary phase mask. The parallel longitudinal writing of multiple waveguides is demonstrated in fused silica. Using this technique, light dividers in three dimensions and wavelength-division demultiplexing (WDD) devices relying on evanescent wave coupling are demonstrated.
https://hal-ujm.archives-ouvertes.fr/ujm-00363750
Contributor : Razvan Stoian <>
Submitted on : Tuesday, February 24, 2009 - 1:05:37 PM
Last modification on : Monday, December 14, 2020 - 4:30:31 PM
Contributor : Razvan Stoian <>
Submitted on : Tuesday, February 24, 2009 - 1:05:37 PM
Last modification on : Monday, December 14, 2020 - 4:30:31 PM