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Physics - Optics & Lasers | Low Threshold Organic Semiconductor Lasers - Hybrid Optoelectronics and Applications as Explosive

Low Threshold Organic Semiconductor Lasers

Hybrid Optoelectronics and Applications as Explosive Sensors

Series: Springer Theses

Wang, Yue

2014, XVI, 164 p. 137 illus., 73 illus. in color.

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  • Nominated as an outstanding Ph.D. thesis by the University of St Andrews, UK
  • Combines the development of compact organic lasers and their application as explosive vapour sensors
  • Pioneering results on nanoimprinted organic lasers for very low threshold operation
  • Includes a demonstration of organic lasers powered by a single nitride LED
This thesis focuses on two areas - the development of miniature plastic lasers that can be powered by LEDs, and the application of these lasers as highly sensitive sensors for vapours of nitroaromatic explosives (e.g. TNT). Polymer lasers are extremely compact visible lasers; the research described in the thesis is groundbreaking, driving forward the technology and physical understanding to allow these lasers to be routinely pumped by a single high-power LED. A notable advance in the work is the demonstration of nanoimprinted polymer lasers, which exhibit the world's lowest pump threshold densities by two orders of magnitude. The thesis also advances the application of these compact, novel lasers as highly sensitive detectors of explosive vapours, demonstrating that rapid detection can be achieved when microporous polymers are used. This work also demonstrates a prototype CMOS-based microsystem sensor for explosive vapours, exploiting a new detection approach.

Content Level » Research

Keywords » Distributed Feedback Laser - Explosive Detector - Explosive Sensor - Low threshold Laser - Nanoimprinting Lithography - Organic Semiconductor - Plastic Laser - Polymer Laser

Related subjects » Condensed Matter Physics - Electronics & Electrical Engineering - Nanotechnology - Optics & Lasers

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