Flexible and tensile microporous polymer fibers for wavelength-tunable random lasing

TL;DR

This paper presents the development of flexible, tensile microporous polymer fibers capable of wavelength-tunable random lasing, achieved through a novel fabrication process and mechanical stretching, with potential applications in flexible photonics.

Contribution

The work introduces a new method to fabricate flexible microporous polymer fibers with tunable lasing properties via mechanical stretching.

Findings

Wavelength tuning of 5.5 nm achieved by stretching fibers

Size-dependent lasing threshold and spectrum observed

Fibers demonstrate high mechanical flexibility

Abstract

Flexible and tensile wavelength-tunable micrometer-sized random lasers in the form of microporous polymer fiber are demonstrated. The fibers are fabricated by directly drawing from an aqueous mixture and subsequently selective chemical etching in a green solvent. Size-dependent lasing threshold and spectrum are investigated. Owing to mechanical flexibility, wavelength-tuning of 5.5 nm is achieved by stretching the fiber.