Healing-block-assisted quasi-phase matching

A quasi-phase matching (QPM) structure based on phase correction by inserting a "healing block" (HB) of length d(HB) into M regular domains of constant length d is proposed to enhance the nonlinear conversion efficiency when the first-order QPM domain length d1 is too short to be reliably...

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Bibliographic Details
Published in:Optics letters 2013-04, Vol.38 (7), p.1176-1178
Main Authors: Lai, Jui-Yu, Hsu, Cheng-Wei, Wu, Dong-Yi, Hung, Sheng-Bang, Chou, Ming-Hsien, Yang, Shang-Da
Format: Article
Language:English
Subjects:
Blocking
Conversion
Healing
Matching
Nonlinearity
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Summary:A quasi-phase matching (QPM) structure based on phase correction by inserting a "healing block" (HB) of length d(HB) into M regular domains of constant length d is proposed to enhance the nonlinear conversion efficiency when the first-order QPM domain length d1 is too short to be reliably fabricated. Second-harmonic conversion efficiency 4.69 times higher than that of a third-order QPM grating has been experimentally demonstrated by using HB-QPM where all the domains are longer than 1.08d1.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.38.001176