Flexible blue-emitting encapsulated organic semiconductor DFB laser
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Updated: Jun 5, 2026
Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy
Published on: November 22, 2019
Johannes Herrnsdorf1, Benoit Guilhabert, Yujie Chen
1Institute of Photonics, University of Strathclyde, Glasgow G4 0NW, UK. johannes.herrnsdorf@strath.ac.uk
Abstract:
Mechanically flexible distributed feedback (DFB) lasers are fabricated by a low-cost approach using soft-lithography from a holographic master grating. The gain material is a star-shaped oligofluorene providing laser emission from 425 to 442 nm with a soft pump threshold at 14.4 μJ/cm (2.7 kW/cm). Encapsulation of the devices enables stable operation in ambient atmosphere at a 1/e degradation energy dosage of 53 J/cm.
