Flexible blue-emitting encapsulated organic semiconductor DFB laser

• DOI: 10.1364/oe.18.025535
• Publication Date: 2010-11-23T15:48:59Z
• Authors: Johannes Herrnsdorf; Benoit Guilhabert; Yujie Chen; Alexander Kanibol...; Allan Mackintosh; Richard Pethrick; Peter Skabara; Erdan Gu; Nicolas Laurand; Martin Dawson
• Keywords: Soft Lithography; Amplified spontaneous emission

Mechanically flexible distributed feedback (DFB) lasers are fabricated by a low-cost approach using soft-lithography from holographic master grating. The gain material is star-shaped oligofluorene providing laser emission 425 to 442 nm with soft pump threshold at 14.4 μJ/cm (2.7 kW/cm). Encapsulation of the devices enables stable operation in ambient atmosphere 1/e degradation energy dosage 53 J/cm.