Figure 4: Coherent-phase information transfer between two subsequent NW laser pulses.
From: Long-term mutual phase locking of picosecond pulse pairs generated by a semiconductor nanowire laser
(a) Time dependence of the emitted intensity obtained by Fourier transforming the optical spectra of the NW laser after only the pump pulse with P/Pth=4 was injected (red line: simulations, black line: experimental data) and computed occupation of the lasing state (blue line) as a function of time. The schematic illustration depicts a NW laser that emits a single pulse. (b) Directly simulated time-dependent emission (red line) of the NW after a pump and probe pulse in the lasing regime (L-L) separated by Δt=20 ps were injected (thin dotted line). Blue line shows the inversion of the laser level and the hatched region depicts the spontaneous emission noise level. The red regions in a,b mark the short pulse emission during the first Rabi oscillation (TΩ marks the Rabi oscillation period and ton the time needed to reach inversion after the pump pulse arrived). The schematic illustration depicts a NW laser that emits a coherent pulse pair.
