Demonstration of coherent emission from high-beta photonic crystal nanolasers at room temperature.
We report on lasing at room temperature and at telecommunications wavelength from photonic crystal nanocavities 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.
Hostein
R
R
Laboratoire de Photonique et Nanostructures LPN-CNRS UPR-20, Route de Nozay, 91460 Marcoussis, France.
Braive
R
R
Le Gratiet
L
L
Talneau
A
A
Beaudoin
G
G
Robert-Philip
I
I
Sagnes
I
I
Beveratos
A
A