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Fabrication of Dammann Gratings Inside Glasses by a Femtosecond Laser |
NAKAYA Takayuki1 QIU Jian-Rong1,2;ZHOU Chang-He2;HIRAO Kazuyuki1,3 |
1Photon Craft Project, Japan Science and Technology Agency, Super-Lab 2-5, Keihanna-Plaza, Hikaridai 1-7, Seika-cho,Soraku-gun, Kyoto 619-0237, Japan
2Photon Craft Project, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800
3Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Kyoto 606-8501, Japan |
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Cite this article: |
NAKAYA Takayuki QIU Jian-Rong, ZHOU Chang-He, HIRAO Kazuyuki 2004 Chin. Phys. Lett. 21 1061-1063 |
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Abstract Dammann grating is useful in information technology as an optical splitter. It is usually fabricated through complicated processes. Here we report on the direct fabrication of a 6 x 6 Dammann grating in a silica glass by an 800 nm femtosecond laser. We also discuss the relationship between diffraction efficiency of 1 x 2 Dammann grating and laser irradiation conditions.
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Keywords:
42.25.Fx
42.62.Cf
42.79.Dj
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Published: 01 June 2004
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