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Micrograting Polymerization Fabrication with a Single Femtosecond Laser Pulse at 400 nm Wavelength
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| GUO Hong-Cang1;GUO Heng-Chang1;JIANG Hong-Bing1;YANG Hong;GONG Qi-Huang1;WANG Tao2;SHI Meng-Quan2;WU Fei-Peng2 |
| 1State Key Laboratory for Artificial Microstructures and Mesoscopic Physics, Department of Physics, Peking University, Beijing 100871
2Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100101 |
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| Cite this article: |
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GUO Hong-Cang, GUO Heng-Chang, JIANG Hong-Bing et al 2003 Chin. Phys. Lett. 20 682-684 |
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Abstract High diffraction efficiency refractive index-modulated holographic micrograting on a polymer thin film was obtained with a single femtosecond laser pulse interference and photo-polymerization. The diffractive efficiency of the micrograting with an He-Ne laser is up to 78% when the thickness of the film is 90μm, which corresponds to the refractive index-modulation as large as 2.4 x 10-3. The compared experiment with a femtosecond oscillator laser indicated that a single femtosecond laser pulse has the advantages in laser machining over the cw holography method such as high fabrication speed, good surface structure and high diffractive efficiency.
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| Keywords:
42.70.Jk
42.70.Ln
42.40.Eq
42.25.Fx
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Published: 01 May 2003
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| PACS: |
42.70.Jk
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(Polymers and organics)
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42.70.Ln
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(Holographic recording materials; optical storage media)
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42.40.Eq
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(Holographic optical elements; holographic gratings)
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42.25.Fx
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(Diffraction and scattering)
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