Flexible distributed feedback lasers based on nanoimprinted cellulose diacetate with efficient multiple wavelength lasing

作者：José R. Castro Smirnov, Ahmad Sousaraei, Manuel Osorio, Santiago Casado, Jaime J. Hernández, Longfei Wu, Qi Zhang, Ruidong Xia, Daniel Granados, Reinhold Wannemacher, Isabel Rodríguez, Juan Cabanillas‐González · 发表于：npj Flexible Electronics · 年份：2019 · DOI：10.1038/s41528-019-0062-4 · 被引用次数：34 · 研究领域：Nonlinear Optical Materials Studies、Photonic and Optical Devices、Nanofabrication and Lithography Techniques

Abstract Here we present the assembly of novel transparent all-polymer distributed feedback (DFB) lasers. Flexible and highly transparent cellulose diacetate (CdA) was employed as substrate on which gratings with different periods were engraved by thermal nanoimprinting with high fidelity. Highly luminescent conjugated polymers (CP), poly (9,9-dioctylfluorene) (PFO), poly(9,9-dioctylfluorene-alt-benzothiadiazole) (F8BT), and a blend of F8BT and poly(3-hexylthiophene)-poly(9,9-dioctylfluorene-alt-benzothiadiazole) (P3HT:F8BT) were deposited by spin coating onto the nanostructured plastic surfaces, giving rise to perpendicular single-mode lasing emission in the blue, green, and red wavelength ranges, respectively. These lasers show linewidths below 1 nm and low thresholds (≈6 μJcm −2 for blue and red lasing emission), comparable to other state-of-the-art lasers obtained from similar optical gain materials on rigid substrates. The followed strategy is scalable and versatile, enabling the development of large area nanoimprinted DFB lasers (>1cm 2 ) on plastic, which is highly relevant for applications in various markets.