An Efficient and Color‐Tunable Solution‐Processed Organic Thin‐Film Laser with a Polymeric Top‐Layer Resonator. Issue 19 (1st August 2017)

• Record Type: Journal Article
• Authors: Quintana, José A.; Villalvilla, José M.; Morales‐Vidal, Marta; Boj, Pedro G.; Zhu, Xiaozhang; Ruangsupapichat, Nopporn; Tsuji, Hayato; Nakamura, Eiichi; Díaz‐García, María A.
• Is Part Of: Advanced optical materials. Volume 5:Issue 19(2017)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2017-08-01
• Subjects: distributed feedback lasers -- organic lasers -- polymeric resonators -- solution‐processed; Optical materials -- Periodicals; Photonics -- Periodicals; 620.11295
• DOI: 10.1002/adom.201700238
• Languages: English
• ISSNs: 2195-1071

Abstract

Abstract : Thin film organic lasers represent attractive light sources for numerous applications. Currently, efforts are devoted to the development of low‐cost high‐performance and color‐tunable devices, whereby both the resonator and the active layer should consist of solution‐processable organic materials. Herein, solution‐processed distributed‐feedback lasers are reported with polymeric resonators on top of active films of perylene orange or carbon‐bridged oligo( p ‐phenylenevinylene) dispersed in polystyrene, which combine these properties. These lasers emit in the 520–595 nm range and show low thresholds (≈1 kW cm −2 ) and long operational lifetimes (7 × 10 5 pump pulses), which are comparable to other state‐of‐the‐art lasers that contain the same active materials but resonators made on inorganic substrates. Due to this top‐layer resonator configuration, the laser slope efficiencies of the present devices are remarkably superior. A centimeter‐size device emitting at different wavelengths within a broad spectral range, based on a perylene‐based film of uniform thickness that contributes to preserve a low threshold, is demonstrated. Abstract : A distributed feedback laser with a top‐layer resonator and an active film, both consisting of solution‐processed organic materials, is reported. The laser shows low threshold and long operational lifetime, similar to a laser with the resonator made on an inorganic substrate, while its laser slope efficiency is remarkably superior. The laser can emit multiple colors within a broad spectral range while preserving a low threshold.