Spectroscopic method and device for quickly testing type II infrared superlattice interface quality
A technology of interface quality and infrared ultrasonography, which is applied in the fields of emission spectrum, spectrum investigation, material excitation analysis, etc.
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[0025] The following is based on figure 1 and figure 2 The embodiments of the present invention are given and described in detail to better illustrate the technical features and functional characteristics of the present invention, rather than to limit the scope of application of the present invention.
[0026] Specific implementations such as figure 1 As shown, the device for quickly detecting the quality of type II superlattice interface based on PL spectrum under a magnetic field includes a Fourier transform infrared spectroscopy system 1, which has an optical interference component 101, and a detector 102 connected with the optical interference component for detecting The signal processing circuit control board 103 and the console computer 104; the light modulation device 2, which includes a mechanical chopper 201 and a lock-in amplifier 202, the frequency signal of the mechanical chopper 201 is connected to the reference terminal of the lock-in amplifier 202, and the loc...
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