Nonlinear detour phase holography,Nanoscale

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Nonlinear detour phase holography
Nanoscale ( IF 5.8 ) Pub Date : 2021-1-5 , DOI: 10.1039/d0nr07069f
Bingxia Wang _{1,

2,

3,

4} , Xuanmiao Hong _{1,

2,

3,

4} , Kai Wang _{1,

2,

3,

4} , Xin Chen _{4,

5,

6,

7} , Shan Liu _{8,

9,

10,

11,

12} , Wieslaw Krolikowski _{8,

9,

10,

11,

12} , Peixiang Lu _{1,

2,

3,

4,

13} , Yan Sheng _{8,

9,

10,

11,

12}

Affiliation

Nonlinear photonic crystals are capable of highly efficient nonlinear wavefront manipulation, providing a promising platform for compact and large-scale integrated nonlinear devices. However, the current nonlinear encoding methods for nonlinear photonic crystals inherently require a number of disordered and complex microstructures, which are quite challenging in a real fabrication process. Herein we propose and experimentally demonstrate a nonlinear detour phase method for nonlinear wavefront manipulation in nonlinear photonic crystals. With the proposed method, the designed nonlinear detour phase hologram only requires a set of basic building blocks with simple shapes, which are easy to fabricate by using the femtosecond laser writing technique. The second-harmonic hologram is demonstrated by designing the nonlinear detour phase patterns, and the quasi-phase-matching scheme in the second-harmonic holographic imaging process is also discussed. This study conceptually extends the conventional detour phase method into the nonlinear regime, offering new possibilities for compact nonlinear micro-devices with multi-functions.

中文翻译：

非线性de回相位全息

非线性光子晶体能够进行高效的非线性波前处理，从而为紧凑型和大规模集成非线性器件提供了有希望的平台。然而，当前用于非线性光子晶体的非线性编码方法固有地需要许多无序且复杂的微结构，这在实际制造过程中是非常具有挑战性的。在这里，我们提出并实验证明了非线性de回相位方法用于非线性光子晶体中的非线性波前操纵。利用所提出的方法，设计的非线性de回相位全息图仅需要一组具有简单形状的基本构造块，这些基本构造块易于通过使用飞秒激光写入技术来制造。通过设计非线性de回相位模式来演示二次谐波全息图，讨论了二次谐波全息成像过程中的准相位匹配方案。这项研究从概念上将常规的tour回相位方法扩展到了非线性状态，为具有多功能的紧凑型非线性微器件提供了新的可能性。

更新日期：2021-01-26

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