Direct Laser Writing of Refractive Index Micro-Structures in Lithium Niobate

Vygantas Mizeikis; Vytautas Purlys; Wataru Inami; Yoshimasa Kawata

doi:10.4028/www.scientific.net/AMR.222.118

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Direct Laser Writing of Refractive Index Micro-Structures in Lithium Niobate
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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 222Direct Laser Writing of Refractive Index...

Direct Laser Writing of Refractive Index Micro-Structures in Lithium Niobate

Abstract:

We report on micro-structuring of iron-doped lithium niobate using femtosecond direct laser writing (DLW) technique. Formation of extended, stable index modulation micro-structures, such as diffraction gratings and linear waveguides is achieved by translation of a focused femtosecond laser beam inside lithium niobate crystals. From diffraction efficiency of the recorded gratings refractive index modulation amplitude of n ~ 10-3 is estimated. It is demonstrated that the recorded structures can be optically erased and re-written.

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Periodical:

Advanced Materials Research (Volume 222)

Pages:

118-121

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.222.118

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Online since:

April 2011

Authors:

Vygantas Mizeikis, Vytautas Purlys, Wataru Inami, Yoshimasa Kawata

Keywords:

Diffraction Grating, Direct Laser Writing Technique, Laser Microfabrication, Lithium Niobate, Reversible Recording

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