Diffraction properties of ultrashort pulsed beams with arbitrary temporal profiles by a reflection volume holographic grating |
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| Authors: | Yingyan Yi Deming Liu |
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| Institution: | a College of Optoelectronic Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
b School of Science, Wuhan University of Technology, Wuhan 430070, China |
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| Abstract: | The diffraction properties of reflection volume holographic gratings are studied when the gratings are illuminated by an ultrashort beam with arbitrary temporal profiles. The modified Kogelnik's theory of coupled waves is used. Simple analytical expressions for spectral and temporal distribution of the transmitted and diffracted are obtained. The dependences of the diffraction bandwidth, the Bragg selectivity bandwidth and the total diffraction efficiency of the reflection volume grating on the temporal profiles of the input ultrashort pulse are investigated. Study shows that the bandwidth of the reflection volume holographic gratings varies with the grating parameters more slowly than the transmitting volume holographic gratings. For three different temporal profiles, numerical results about diffraction properties of the reflection volume holographic gratings are given and compared with the transmitting volume holographic gratings. |
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| Keywords: | Reflecting volume holographic grating Coupled-wave theory Ultrashort pulsed beam Diffraction |
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