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Figure 2 | Nanoscale Research Letters

Figure 2

From: Investigation of monolithic passively mode-locked quantum dot lasers with extremely low repetition frequency

Figure 2

Bifurcation diagrams illustrating different operation regimes of the 2-cm-long two-section ML laser. (a) Peak power, (b) pulse width, and (c) average power at the fixed reverse-bias voltage V = −2 V and as a function of the injection current for this device are shown. The fundamental ML branch (red cross) and the second (black circle), the third (green cross), and the fourth (blue plus) harmonic ML branches are illustrated. Arrows in (a) identify the working point which will be discussed later in Figure 3.

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