Abstract
We analyze the threshold and dynamic characteristics of photonic crystal nanolasers under pulsed excitation. Such nanolasers display high spontaneous emission coupling factors higher than β=0.2. Our nanolasers operate either at 900 nm (and low temperature) or at 1.55 µm (and room temperature). The gain material is an array of self-assembled quantum dots (InAs/GaAs at 900 nm or InAsP/InP at 1. 55 µm. High bandwidth direct modulation of 10 GHz and pattern independent chirp is demonstrated. We revisit the definition of a laser threshold and demonstrate that the two standard definitions (quantum definition and intensity fluctuations based definition) do not always coincide.
© 2009 Optical Society of America
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