Transactions of the Society of Information Storage Systems (정보저장시스템학회논문집)

The Society of Information Storage Systems (정보저장시스템학회)
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Design and evaluation of laser module for light delivery in heat assisted magnetic recording

열 보조 자기기록용 광 전달 레이저 모듈의 설계 및 평가

  • 최용복 (연세대학교 정보저장기기연구센터) ;
  • 이문호 (연세대학교 기계공학과) ;
  • 김영주 (연세대학교 기계공학과)
  • Received : 2011.03.16
  • Accepted : 2011.03.24
  • Published : 2011.03.25
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Abstract

The micro laser module was designed and prepared to deliver the light to the HAMR head. It consists of laser diode, photo diode and actuator to realize stable light delivery even though the head is fluctuated during the disk rotation. The optical evaluation was carried out with the actual distance between the light source and HAMR head with a range of reflectivity and it was found that the incident angle could be controlled within ${\pm}0.125^{\circ}$ to maintain same intensity into the HAMR head. It was also confirmed that the designed micro laser module is thermally stable without any severe effect on the magnetic head.

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References

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