Energy assisted magnetic recording disk drive using modulated laser light
First Claim
1. A heat assisted magnetic recording (HAMR) disk drive including a media comprising:
- a slider;
at least one laser coupled with the slider;
at least one electro-optical modulator (EOM) optically coupled with the at least one laser and coupled with the slider, the at least one laser and the at least one EOM being coupled to provide a modulated energy output, the at least one EOM controlling the modulated energy output to be a pulsed output having a characteristic waveform shape for energy versus time; and
at least one HAMR head on the slider, the at least one HAMR head including at least one waveguide, a write pole, and at least one coil for energizing the write pole, the at least one waveguide for receiving the modulated energy output and directing the modulated energy output toward the media.
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Accused Products
Abstract
A method and system provide a heat assisted magnetic recording (HAMR) disk drive including a media. The HAMR disk drive also includes a slider, at least one laser, at least one HAMR head on the slider and at least one electro-optical modulator (EOM) optically coupled with the laser(s) and coupled with the slider. The at least one laser and the at least one EOM are coupled to provide a modulated energy output. The at least one EOM controls the modulated energy output to have a characteristic waveform shape. The at least one HAMR head includes at least one waveguide, a write pole, and at least one coil for energizing the write pole. The at least one waveguide receives the modulated energy output and directs the modulated energy output toward the media.
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Citations
36 Claims
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1. A heat assisted magnetic recording (HAMR) disk drive including a media comprising:
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a slider; at least one laser coupled with the slider; at least one electro-optical modulator (EOM) optically coupled with the at least one laser and coupled with the slider, the at least one laser and the at least one EOM being coupled to provide a modulated energy output, the at least one EOM controlling the modulated energy output to be a pulsed output having a characteristic waveform shape for energy versus time; and at least one HAMR head on the slider, the at least one HAMR head including at least one waveguide, a write pole, and at least one coil for energizing the write pole, the at least one waveguide for receiving the modulated energy output and directing the modulated energy output toward the media. - View Dependent Claims (2, 3, 4, 5, 6, 7, 12, 13, 14, 15, 16, 17, 18)
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8. A heat assisted magnetic recording (HAMR) disk drive including a media comprising:
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a slider; at least one laser coupled with the slider; at least one electro-optical modulator (EOM) optically coupled with the at least one laser and coupled with the slider, the at least one laser and the at least one EOM being coupled to provide a modulated energy output, the at least one EOM controlling the modulated energy output to have a characteristic waveform shape; and at least one HAMR head on the slider, the at least one HAMR head including at least one waveguide, a write pole, and at least one coil for energizing the write pole, the at least one waveguide for receiving the modulated energy output and directing the modulated energy output toward the media; wherein the media experiences a time varying temperature based on the modulated energy output, the time varying temperature having a global peak and a plurality of local peaks, the HAMR head being configured to write to the media in a write band corresponding to a time range and a temperature range between two of the plurality of local peaks.
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9. A heat assisted magnetic recording (HAMR) disk drive including a media comprising:
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a slider; at least one laser coupled with the slider; at least one electro-optical modulator (EOM) optically coupled with the at least one laser and coupled with the slider, the at least one laser and the at least one EOM being coupled to provide a modulated energy output, the at least one EOM controlling the modulated energy output to have a characteristic waveform shape; and at least one HAMR head on the slider, the at least one HAMR head including at least one waveguide, a write pole, and at least one coil for energizing the write pole, the at least one waveguide for receiving the modulated energy output and directing the modulated energy output toward the media; wherein the media experiences a time varying temperature based on the modulated energy output, the time varying temperature having a global peak, a first local peak having a first local maximum, a second local peak having a second local maximum, the first local peak adjoining the global and the second local peak adjoining the first local peak, the HAMR head being configured to write to the media in a write band corresponding to a time range and a temperature range between the first local peak and the second local peak. - View Dependent Claims (10)
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11. A heat assisted magnetic recording (HAMR) disk drive including a media comprising:
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a slider; at least one laser coupled with the slider; at least one electro-optical modulator (EOM) optically coupled with the at least one laser and coupled with the slider, the at least one laser and the at least one EOM being coupled to provide a modulated energy output, the at least one EOM controlling the modulated energy output to have a characteristic waveform shape; and at least one HAMR head on the slider, the at least one HAMR head including at least one waveguide, a write pole, and at least one coil for energizing the write pole, the at least one waveguide for receiving the modulated energy output and directing the modulated energy output toward the media; wherein the media experiences a time varying temperature based on the modulated energy output, the time varying temperature having a global peak and a plurality of local peaks, the HAMR head being configured to write to the media in a write band corresponding to a time range and a temperature range after the global peak and between the global peak and one of the plurality of local peaks.
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19. A method for fabricating a heat assisted magnetic recording (HAMR) disk drive including a media comprising:
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providing a slider; providing at least one laser coupled with the slider; providing at least one electro-optical modulator (EOM) optically coupled with the at least one laser and coupled with the slider, the at least one laser and the at least one EOM being coupled to a modulated energy output, the at least one EOM controlling the modulated energy output to be a pulsed output having a characteristic waveform shape for energy versus time; and providing at least one HAMR head on the slider, the at least one HAMR head including at least one waveguide, a write pole, and at least one coil for energizing the write pole, the at least one waveguide for receiving the modulated energy output and directing the modulated energy output toward the media. - View Dependent Claims (20, 21, 22, 23, 24)
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25. A method for writing to a media in a heat assisted magnetic recording (HAMR) disk drive, the HAMR disk drive including at least one laser and at least one HAMR head having at least one waveguide and at least one write pole therein, the method comprising:
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energizing the laser to provide energy; controlling at least one electro-optical modulator (EOM) optically coupled with the at least one laser to provide a modulated energy output using the energy, the at least one EOM controlling the modulated energy output to be a pulsed output having a characteristic waveform shape for energy versus time, the modulated energy being optically coupled into the at least one waveguide and being provided from the waveguide to the media; and energizing the at least one write pole to record data to the media when the media has at least a particular temperature. - View Dependent Claims (26, 27, 28, 29, 30, 34, 35, 36)
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31. A method for writing to a media in a heat assisted magnetic recording (HAMR) disk drive, the HAMR disk drive including at least one laser and at least one HAMR head having at least one waveguide and at least one write pole therein, the method comprising:
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energizing the laser to provide energy; controlling at least one electro-optical modulator (EOM) optically coupled with the at least one laser to provide a modulated energy output using the energy, the at least one EOM controlling the modulated energy output to have a characteristic waveform shape, the modulated energy being optically coupled into the at least one waveguide and being provided from the waveguide to the media; and energizing the at least one write pole to record data to the media when the media has at least a particular temperature; wherein the media experiences a time varying temperature based on the modulated energy output, the time varying temperature having a global peak and a plurality of local peaks and wherein the step of energizing the at least one write pole further includes; writing to the media in a write band corresponding to a time range and a temperature range between two of the plurality of local peaks.
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32. A method for writing to a media in a heat assisted magnetic recording (HAMR) disk drive, the HAMR disk drive including at least one laser and at least one HAMR head having at least one waveguide and at least one write pole therein, the method comprising:
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energizing the laser to provide energy; controlling at least one electro-optical modulator (EOM) optically coupled with the at least one laser to provide a modulated energy output using the energy, the at least one EOM controlling the modulated energy output to have a characteristic waveform shape, the modulated energy being optically coupled into the at least one waveguide and being provided from the waveguide to the media; and energizing the at least one write pole to record data to the media when the media has at least a particular temperature wherein the media experiences a time varying temperature based on the modulated energy output, the time varying temperature having a maximum peak, a first local peak having a first local maximum, a second local peak having a second local maximum, the first local peak adjoining the maximum and the second local peak adjoining the first local peak and wherein the step of energizing the at least one write pole further includes; writing to the media in a write band corresponding to a time range and a temperature range between the first local peak and the second local peak. - View Dependent Claims (33)
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Specification