A new optical front-end compensation technique for suppression of spurious signal in photoreflectance spectroscopy using an antiphase signal
A new optical front-end compensation technique to suppress the unwanted, spurious signal in photoreflectance (PR) spectroscopy is developed. In this approach an optical compensation signal, which is amplitude-matched to and in antiphase to the spurious signal, is introduced and directed to the photodetector. The combination of the compensation signal and the spurious signal results in a dc output from the photodetector which is thereafter suppressed by the lock-in amplifier, leaving only the...[Show more]
|Collections||ANU Research Publications|
|Source:||Review of Scientific Instruments|
|01_Li_A_new_optical_front-end_2010.pdf||Published Version||491.71 kB||Adobe PDF|
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