Random-laser dynamics with temporally modulated pump
Stefan Bittner, Sebastian Knitter, Seng Fatt Liew, and Hui Cao
TL;DR
This paper experimentally investigates how temporally modulating the pump intensity affects random laser behavior, revealing that specific pulse profiles can significantly enhance emission independently of scatterer arrangement or noise.
Contribution
It demonstrates that temporal modulation of the pump can deterministically control and enhance random laser emission, a novel approach in the field.
Findings
Temporal pump modulation influences laser emission strength.
Certain pulse profiles produce exceptionally strong emission.
The process is deterministic and independent of scatterer configuration.
Abstract
We present an experimental study of the effects of temporal modulation of the pump intensity on a random laser. The nanosecond pump pulses exhibit rapid intensity fluctuations which differ from pulse to pulse. Specific temporal profiles of the pump pulses produce extraordinarily strong emission from the random laser. This process is deterministic and insensitive to the spatial configuration of the scatterers and spontaneous emission noise.
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