中国物理B ›› 2012, Vol. 21 ›› Issue (9): 94218-094218.doi: 10.1088/1674-1056/21/9/094218

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

Broadband and high efficiency metal multi-layer dielectric grating based on non-quarter wave coatings as reflective mirror

张文飞a b, 孔伟金a b, 云茂金a b, 刘均海a b, 孙欣a b   

  1. a College of Physics Science, Qingdao University, Qingdao 266071, China;
    b Key Laboratory of Photonics Materials and Technology in Universities of Shandong (Qingdao University),Qingdao 266071, China
  • 收稿日期:2012-01-12 修回日期:2012-02-13 出版日期:2012-08-01 发布日期:2012-08-01
  • 基金资助:
    Project supported by the Program of Qingdao Municipal Science and Technology Bureau, China (Grant No. 12-1-4-2-(15)-jch), the National Natural Science Foundation of China (Grant Nos. 10804060 and 10904080), and the Taishan Scholars Program of Shandong Province, China.

Broadband and high efficiency metal multi-layer dielectric grating based on non-quarter wave coatings as reflective mirror

Zhang Wen-Fei (张文飞)a b, Kong Wei-Jin (孔伟金)a b, Yun Mao-Jin (云茂金)a b, Liu Jun-Hai (刘均海)a b, Sun Xin (孙欣)a b   

  1. a College of Physics Science, Qingdao University, Qingdao 266071, China;
    b Key Laboratory of Photonics Materials and Technology in Universities of Shandong (Qingdao University),Qingdao 266071, China
  • Received:2012-01-12 Revised:2012-02-13 Online:2012-08-01 Published:2012-08-01
  • Contact: Kong Wei-Jin E-mail:kwjsd@163.com
  • Supported by:
    Project supported by the Program of Qingdao Municipal Science and Technology Bureau, China (Grant No. 12-1-4-2-(15)-jch), the National Natural Science Foundation of China (Grant Nos. 10804060 and 10904080), and the Taishan Scholars Program of Shandong Province, China.

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摘要： This article deals with designing broadband and high efficiency metal multi-layer dielectric grating (MMDG) used to compress and stretch ultra-short laser pulse. The diffraction characteristics of MMDG are analysed with the method of rigorous coupled-wave method. The multi-layer dielectric used as reflective mirror is made up of non-quarter wave coatings. Taking the diffraction efficiency of the -1 order as the value of merit function, the parameters such as groove depth, residual thickness, duty cycle, and reflective mirror are optimized to obtain broadband and high diffraction efficiency. The optimized MMDG shows an ultra-broadband working spectrum with the average efficiency exceeding 97% over 160 nm wavelength centred at 1053 nm and TE polarization. The optimized MMDG should be useful for chirped pulse amplification.

关键词: grating, broadband, non-quarter wave coatings

Abstract: This article deals with designing broadband and high efficiency metal multi-layer dielectric grating (MMDG) used to compress and stretch ultra-short laser pulse. The diffraction characteristics of MMDG are analysed with the method of rigorous coupled-wave method. The multi-layer dielectric used as reflective mirror is made up of non-quarter wave coatings. Taking the diffraction efficiency of the -1 order as the value of merit function, the parameters such as groove depth, residual thickness, duty cycle, and reflective mirror are optimized to obtain broadband and high diffraction efficiency. The optimized MMDG shows an ultra-broadband working spectrum with the average efficiency exceeding 97% over 160 nm wavelength centred at 1053 nm and TE polarization. The optimized MMDG should be useful for chirped pulse amplification.

Key words: grating, broadband, non-quarter wave coatings

中图分类号:  (Gratings)

  • 42.79.Dj
42.79.-e (Optical elements, devices, and systems) 61.05.J- (Electron diffraction and scattering) 46.40.Cd (Mechanical wave propagation (including diffraction, scattering, and dispersion))