| 摘要 |
A hole burning measurement system realizes accurate analysis of a photochemical hole burning effect in an optical device. The hole burning measurement system includes, a light source for generating a coherent light beam, a first beam splitter for splitting the coherent light beam into two light beams; an optical frequency shifter for shifting a frequency of one of the two light beams splitted to form a reference light beam, an optical switch for switching the other light beam splitted by the first beam splitter to form a pulse train in a form predetermined for inducing photon echoes in the optical device under test; a circular polarization converter for circularly polarizing the pulse train to form a circularly polarized light pulse train; a second beam splitter for mixing the reference light beam and a free induction decay (FID) signal of the photon echo induced by the pulse train in the optical device under test; a photo detector for converting a mixed signal from the second beam splitter to a corresponding electric signal; an analog-to-digital converter for converting the electric signal to corresponding digital data; and a Fourier transformer for converting the digital data from the analog-to-digital converter to frequency domain data showing the hole burning effect in a form of frequency spectrum.
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