Generating optical vortex with computer-generated hologram fabricated inside glass by femtosecond laser pulses |
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Authors: | Zhongyi Guo Shiliang Qu Shutian Liu |
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Institution: | Department of Optoelectronic Science, Harbin Institute of Technology at Weihai, Weihai 264209, China |
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Abstract: | We introduce a novel method to generate the optical vortex with computer-generated hologram (CGH) fabricated inside glass by femtosecond laser pulses. The CGH was directly written inside glass by femtosecond laser pulses induced microexplosion without any pre- or post-treatment of the material. We also realized the restructured optical vortex beams of both the transmission and reflection pattern with high fidelity using a collimated He-Ne laser beam. The total diffractive efficiency of both the transmission and reflection pattern is about 4.79%. |
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Keywords: | 42 40 Jv 42 82 Cr 42 65 Re |
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