Fig. 1: Experimental setup and laser emission spectra. | Light: Science & Applications

Fig. 1: Experimental setup and laser emission spectra.

From: Mid-infrared hyperchaos of interband cascade lasers

Fig. 1

a Experimental setup for the chaos generation in an ICL subject to external optical feedback. The feedback is provided by a gold mirror, and the feedback ratio is controlled by rotating the polarizer. OSA optical spectrum analyzer, ESA electrical spectrum analyzer, BS beam splitter. b The optical spectra of the ICL at 85 mA for several feedback ratios.

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