Fig. 1: Hybrid Dual Comb Spectrometer. | Communications Physics

Fig. 1: Hybrid Dual Comb Spectrometer.

From: Quantum cascade laser based hybrid dual comb spectrometer

Fig. 1

a Experimental setup scheme. OR-FC: optically rectified frequency comb; QCL-FC: quantum cascade laser frequency comb; WGP: wire grid polarizer; HEB: hot-electron bolometer; SA: spectrum analyzer; BP filter: band-pass filter. b Acquisition of the heterodyne beatnotes signal (HBN) on the SA, resulting from the mixing of the OR- and QCL-FC on the HEB.

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