Demonstration of coherent emission from high-beta photonic crystal nanolasers at room temperature.

Richard Hostein,Remy Braive,Luc Le Gratiet,Anne Talneau,Gregoire Beaudoin,Isabelle Robert-Philip,Isabelle Sagnes,Alexios Beveratos

OPTICS LETTERS（2010）

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摘要

We report on lasing at room temperature and at telecommunications wavelength from photonic crystal nano-cavities based on InAsP/InP quantum dots. Such laser cavities with a small modal volume and high quality factor display a high spontaneous emission coupling factor (beta). Lasing is confirmed by measuring the second-order autocorrelation function. A smooth transition from chaotic to coherent emission is observed, and coherent emission is obtained at eight times the threshold power. (C) 2010 Optical Society of America

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关键词

quality factor,photonic crystal,quantum dot,smooth transition,spontaneous emission,semiconductor lasers,autocorrelation function,second order,quantum electrodynamics,room temperature

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