The invention relates to an optical head and an optical recording/reproducing apparatus for recording information in an optical recording medium or reproducing information recorded therein and a method of optical recording/reproduction utilizing the same. The invention provides an optical head and an optical recording/reproducing apparatus capable of reproducing an RF signal of high quality by eliminating a noise component superimposed on reflected light from a recording medium and a method of optical recording/reproduction utilizing the same. The optical head has an RF signal extraction circuit for extracting an RF signal including information recorded in a rotating recording medium. The RF signal extraction circuit has a low-pass filter for eliminating the RF signal from an electrical signal obtained by performing photoelectric conversion of laser light irradiated to and reflected by the recording medium to extract a noise signal and a differential amplifier circuit connected to the low-pass filter to perform a differential operation between the electrical signal and the noise signal.