Figure 2 | Scientific Reports

Figure 2

From: High efficiency quantum cascade laser frequency comb

Figure 2

(a) Interferogram generated by a FTIR when measuring the subthreshold spectrum of a HR-coated comb device. Individual bursts in the interferogram are labelled sequentially. The resolution is 0.11 cm−1. (b) Measurement of the GVD and (c) gain of HR-coated QCL-comb as a function of current.

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