Heat-assisted magnetic recording apparatus that modulates laser power to reduce differences between track widths of recorded marks
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United States of America Patent
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Jun 15, 2021
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app pub date -
Jun 29, 2020
filing date -
Jun 29, 2020
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Abstract
Two or more different elapsed time values are determined between transitions of a data signal applied to a magnetic write transducer of a heat-assisted magnetic recording apparatus. Two or more different power values of the laser are respectively associated with the two or more different elapsed time values. The two or more different power levels are selected to reduce differences between track widths of recorded marks having the two or more different elapsed time values.
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