Fig. 4: Temperature dependent laser performance.
From: Continuous-wave quantum dot photonic crystal lasers grown on on-axis Si (001)

a Normalised lasing spectra at the pumping power 1.6 μW (above threshold) from 5 to 295 K. b Temperature dependence of lasing wavelength at the pumping power 1.6 μW, the inset shows a measured L–L curve at 200 K. c Temperature dependence of the lasing threshold, and the blue line represents the exponential fit to the experimental data (black dot).