中国物理B ›› 2010, Vol. 19 ›› Issue (10): 104201-104201.doi: 10.1088/1674-1056/19/10/104201

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Analysis of restriction factors of widening diffraction bandwidth of multilayer dielectric grating

晋云霞1, 邵建达1, 范正修1, 汪剑鹏2, 麻健勇2   

  1. (1)Key Laboratory of Material Science and Technology for High Power Lasers, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai rm201800, China; (2)Key Laboratory of Material Science and Technology for High Power Lasers, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai rm201800, China; Graduate School of the Chinese Academy of Sciences, Beijing 100049, China
  • 收稿日期:2009-12-07 修回日期:2010-03-29 出版日期:2010-10-15 发布日期:2010-10-15
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 10704079), and the Natural Science Foundation of Shanghai Committee of Science and Technology, China (Grant No. 10ZR1433500).

Analysis of restriction factors of widening diffraction bandwidth of multilayer dielectric grating

Wang Jian-Peng(汪剑鹏)a)b)†, Jin Yun-Xia(晋云霞)a), Ma Jian-Yong(麻健勇)a)b), Shao Jian-Da(邵建达)a)‡ger, and Fan Zheng-Xiu(范正修)a)   

  1. a Key Laboratory of Material Science and Technology for High Power Lasers, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai rm201800, China; b Graduate School of the Chinese Academy of Sciences, Beijing 100049, China
  • Received:2009-12-07 Revised:2010-03-29 Online:2010-10-15 Published:2010-10-15
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 10704079), and the Natural Science Foundation of Shanghai Committee of Science and Technology, China (Grant No. 10ZR1433500).

摘要: In order to design a multilayer dielectric grating with wide-bandwidth diffraction spectrum, the restriction factors of both the reflection bandwidth of multilayer dielectric high-reflectivity mirror and the guided-mode resonance phenomenon are studied in detail. The reflection characteristics of high-reflectivity mirror in zeroth and -1st transmitted diffraction orders are quantitatively evaluated. It is found that the reflection bandwidth of high-reflectivity mirror in -1st transmitted diffraction order, which determines the final diffraction bandwidth of multilayer dielectric grating, is evidently compressed. Furthermore, it is demonstrated that the reducing of grating period is an effective approach to the elimination of guided mode resonance over a required broad band range both spectrally and angularly. In addition, the expressions for calculating the maximum period ensuring no guided mode resonance in the required bandwidth are derived. Finally, two high-efficiency pulse-compression gratings with broad-band are presented.

Abstract: In order to design a multilayer dielectric grating with wide-bandwidth diffraction spectrum, the restriction factors of both the reflection bandwidth of multilayer dielectric high-reflectivity mirror and the guided-mode resonance phenomenon are studied in detail. The reflection characteristics of high-reflectivity mirror in zeroth and -1st transmitted diffraction orders are quantitatively evaluated. It is found that the reflection bandwidth of high-reflectivity mirror in -1st transmitted diffraction order, which determines the final diffraction bandwidth of multilayer dielectric grating, is evidently compressed. Furthermore, it is demonstrated that the reducing of grating period is an effective approach to the elimination of guided mode resonance over a required broad band range both spectrally and angularly. In addition, the expressions for calculating the maximum period ensuring no guided mode resonance in the required bandwidth are derived. Finally, two high-efficiency pulse-compression gratings with broad-band are presented.

Key words: multilayer dielectric grating, broad band, diffraction bandwidth, reflection bandwidth, guided-mode resonance

中图分类号:  (Resonators, cavities, amplifiers, arrays, and rings)

  • 42.60.Da
42.65.Re (Ultrafast processes; optical pulse generation and pulse compression) 42.79.Bh (Lenses, prisms and mirrors) 42.79.Dj (Gratings) 42.79.Wc (Optical coatings)