| 摘要 |
The magneto-optical recording and reproducing apparatus comprises a laser source, a collimator lens, an objective lens, a magneto-optical recording medium, a servo signal detector, a reproduction signal detector, a signal separating polarization beam splitter, a data recording polarization beam splitter and a data reproducing polarization beam splitter. The data recording polarization beam splitter and the data reproducing polarization beam splitter are disposed on a rotatable PBS holder so that the positions of the beam splitters can be changed according to whether the apparatus is for reproducing data or for recording data. With the apparatus, the quantity of light emitted from the laser source can be reduced since the optical path efficiency of the laser beam to the medium is enhanced at the time of recording, and carrier-output/noise ratio C/N can be increased at the time of reproducing.
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