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Method and system for performing off-disk measurements of laser-induced NFT protrusion in a heat assisted magnetic recording transducer
Method and system for performing off-disk measurements of laser-induced NFT protrusion in a heat assisted magnetic recording transducer
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机译:在热辅助磁记录换能器中执行激光诱导的NFT突起的盘外测量的方法和系统
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摘要
A method and system test a heat assisted magnetic recording (HAMR) transducer. The HAMR transducer is optically coupled to at least one laser and has an air-bearing surface. The HAMR transducer includes at least one waveguide, at least one near-field transducer (NFT) and a pole. A portion of the NFT(s) resides at the ABS. The laser(s) are optically coupled to the NFT(s). The method and system include energizing the laser(s) at power(s) while the HAMR transducer is not in proximity to a media. The method and system also include measuring an off-disk protrusion of the portion of the NFT(s) at the ABS while the laser(s) are energized and the HAMR transducer is not in proximity to the media.
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