Design of ultrabroadband double-chirped mirror pairs for ultrafast lasers | Zendy

牛海亮 Niu Hailiang | Zendy; Yueguang Zhang | Zendy; Weidong Shen | Zendy; Peng Yu | Zendy; Yanghui Li | Zendy; Liu Xu | Zendy

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Design of ultrabroadband double-chirped mirror pairs for ultrafast lasers

Author(s) -

牛海亮 Niu Hailiang,

Yueguang Zhang,

Weidong Shen,

Peng Yu,

Yanghui Li,

Liu Xu

Publication year - 2012

Publication title -

acta physica sinica

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.199

H-Index - 47

ISSN - 1000-3290

DOI - 10.7498/aps.61.014211

Subject(s) - materials science , femtosecond , optics , ultrashort pulse , laser , dispersion (optics) , group delay dispersion , sapphire , ripple , wavelength , optoelectronics , stack (abstract data type) , physics , computer science , fiber optic sensor , optical fiber , dispersion shifted fiber , quantum mechanics , voltage , programming language

According to the requirements for design and manufacture, we choose double-chirped method for designing the initial structure of the chirped coatings, and analyze the dependencs of reflectivity and group delay dispersion on the parameters of coatings such as the double-chirped modulation factor and the the proportion of double-chirped layers on the total thin film stack. Further more, we establish their optimal values. Based on the analysis, a chirped mirror pair, whose reflectivity is more than 99.5% and average group delay dispersion is -40 fs2 with a residual ripple of less than 20 fs2 in a wavelength range of 600 nm-1050 nm, is demonstrated, which is to be used in the Ti: Sapphire femtosecond laser system for dispersion compensation.

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