Three-wave mixing experiments in indium–tin–oxide thin-films with no phase matching

IF 4.6 Q1 OPTICS Journal of Physics-Photonics Pub Date : 2024-08-04 DOI:10.1088/2515-7647/ad6799
Kyle Wynne, Marjan Bazian and Mark C Harrison
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Abstract

One challenge of using nonlinear optical phenomena for practical applications is the need to perform phase-matching. Recently, epsilon-near-zero materials have been shown to demonstrate strong optical nonlinearities, in addition to their other unique properties. As suggested by their name, the permittivity of the material is close to zero for a certain wavelength range. We demonstrate that this small permittivity allows for efficient three-wave mixing interactions to take place in indium–tin–oxide thin films without the need for phase matching the pump and signal beams. The efficiency of the second-order nonlinear interactions is characterized, and cascaded three-wave mixing is demonstrated.
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无相位匹配铟锡氧化物薄膜中的三波混合实验
将非线性光学现象用于实际应用的一个挑战是需要进行相位匹配。最近,ε近零材料除了具有其他独特性质外,还显示出很强的光学非线性。正如其名称所示,这种材料的介电常数在一定波长范围内接近于零。我们证明,这种小介电常数允许在氧化铟锡薄膜中发生高效的三波混合相互作用,而无需对泵浦光束和信号光束进行相位匹配。我们对二阶非线性相互作用的效率进行了描述,并演示了级联三波混合。
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来源期刊
CiteScore
10.70
自引率
0.00%
发文量
27
审稿时长
12 weeks
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