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Determining thermal gradient of a HAMR hotspot using pseudo-random bit sequences recorded at a stepped laser power
Determining thermal gradient of a HAMR hotspot using pseudo-random bit sequences recorded at a stepped laser power
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机译:使用以步进激光功率记录的伪随机位序列确定HAMR热点的热梯度
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摘要
Pseudorandom bit sequences are recorded to a heat-assisted recording medium at a laser power that is stepped while recording the pseudorandom bit sequences. The pseudorandom bit sequences are read from the heat-assisted recording medium to determine timing differences between bits written before and after the laser power is stepped. A thermal gradient of bits written to the heat-assisted recording medium is determined based on the timing differences.
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