| Diffraction Properties of Blazed Gratings Illuminated with Broad-bandwidth and Divergent Beam |
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| 作者姓名： | LIU Guo-hua LIU De-ming |
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| 作者单位： | LIU Guo-hua:Department of Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, CHN
LIU De-ming:Department of Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, CHN
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| 基金项目： | Key Technologies R&D Programme of Hubei Province(2005AA101B10) |
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| 摘 要： | Far-field intensity and diffraction efficiency of the blazed reflection gratings illuminated with broad-bandwidth and divergent beam are investigated. When the spectral width and divergence of the incident beam with a constant energy increase, the maximum intensity decreases, and the half width at e^-2 of the maximum intensity becomes wider. Diffraction efficiency has no deterioration for the blazed grating with a proper groove shape even when the incident light contains a broad range of wavelengths and comes from a wide range of angles.
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| 关 键 词： | 光栅 带宽 光纤激光器 衍射性质 |
| 收稿时间： | 2007/9/17 |
Diffraction Properties of Blazed Gratings Illuminated with Broad-bandwidth and Divergent Beam |
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| LIU Guo-hua,LIU De-ming.Diffraction Properties of Blazed Gratings Illuminated with Broad-bandwidth and Divergent Beam[J].Semiconductor Photonics and Technology,2008,14(1):13-16. |
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| Authors: | LIU Guo-hua LIU De-ming |
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| Affiliation: | Department of Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, CHN |
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| Abstract: | Far-field intensity and diffraction efficiency of the blazed reflection gratings illuminated with broad-bandwidth and divergent beam are investigated. When the spectral width and divergence of the incident beam with a constant energy increase, the maximum intensity decreases, and the half width at e-2 of the maximum intensity becomes wider. Diffraction efficiency has no deterioration for the blazed grating with a proper groove shape even when the incident light contains a broad range of wavelengths and comes from a wide range of angles. |
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| Keywords: | blazed grating broad-bandwidth beam divergent beam fiber lasers |
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