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Article Dans Une Revue Micromachines Année : 2024

Fabrication and Characterization of 2D Nonlinear Structures Based on DAST Nanocrystals and SU-8 Photoresist for Terahertz Application

Résumé

We demonstrate a method for the realization of highly nonlinear optical 4-(4-dimethylaminostyryl)- 1-methylpyridinium tosylate (DAST) two-dimensional structures by a double-step technique. The desired polymeric structures were first fabricated by using the multiple exposure of the two-beam interference technique, and the DAST nanoscrystals were then prepared inside the air-voids of these photoresist templates, resulting in nonlinear periodic structures. The nonlinear properties were characterized by optical and scanning microscopies, as well as by second-harmonic generation technique. This nonlinear modulation is very promising for the enhancement of nonlinear conversion rates, such as terahertz generation, by using the quasi-phase matching technique.

Dates et versions

hal-04426065 , version 1 (30-01-2024)

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Tamara Pogosian, Isabelle Ledoux-Rak, Igor Denisyuk, Maria Fokina, Ngoc Diep Lai. Fabrication and Characterization of 2D Nonlinear Structures Based on DAST Nanocrystals and SU-8 Photoresist for Terahertz Application. Micromachines, 2024, 15 (2), pp.203. ⟨10.3390/mi15020203⟩. ⟨hal-04426065⟩
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