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	Laser power monitoring in a heat-assisted magnetic recording device using a resistive sensor and high-frequency laser modulation
	KIELY, JAMES DILLON; DUDA, JOHN CHARLES; FLETCHER, PATRICK CARL; DOROBANTU, ANDREI; TRANTHAM, JON D.
	2019-09-10
著作权人	SEAGATE TECHNOLOGY LLC
专利号	US10408674
国家	美国
文献子类	授权发明
其他题名	Laser power monitoring in a heat-assisted magnetic recording device using a resistive sensor and high-frequency laser modulation
英文摘要	An apparatus comprises a light source configured to generate light, and a modulator coupled to the light source and configured to modulate the light above a predetermined frequency. A slider is configured for heat-assisted magnetic recording and to receive the modulated light. A resistive sensor is integral to the slider and subject to heating by absorption of electromagnetic radiation and conduction of heat. Measuring circuitry is coupled to the resistive sensor and configured to measure a response of the resistive sensor due to absorbed electromagnetic radiation and not from the heat conduction. The measuring circuitry may further be configured to determine output optical power of the light source using the measured resistive sensor response.
公开日期	2019-09-10
申请日期	2019-03-13
状态	授权
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/34540]
专题	半导体激光器专利数据库
作者单位	SEAGATE TECHNOLOGY LLC
推荐引用方式 GB/T 7714	KIELY, JAMES DILLON,DUDA, JOHN CHARLES,FLETCHER, PATRICK CARL,et al. Laser power monitoring in a heat-assisted magnetic recording device using a resistive sensor and high-frequency laser modulation. US10408674. 2019-09-10.

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