Integration of light delivery for heat assisted magnetic recording

Hirata, Masakazu; Oumi, Manabu; Park, M.; Tanabe, S.; Chiba, Norio; Gonzaga, Leonard; Yu, Shengkai; Zhang, Mingsheng; Tjiptoharsono, Febiana

doi:10.1109/apmrc.2009.4925427

Cited by 1 publication

(1 citation statement)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In real implementation, there is a challenge concerning how to deliver the laser energy to the transducer. One method is to place the laser diode (LD) outside the slider and to deliver the laser energy into the waveguide on the slider (the transducer is located at the exit of the waveguide) by fiber or free space coupling; [1][2][3] Another method is to mount a LD chip on the slider and to couple the laser energy into the waveguide directly. 4) Each method has its advantages and disadvantages.…”

Section: Introductionmentioning

confidence: 99%

Thermal Analysis of Heat-Assisted Magnetic Recording Optical Head with Laser Diode on Slider

Xu¹,

Chia²,

Zhang³

et al. 2011

Jpn. J. Appl. Phys.

View full text Add to dashboard Cite

For the optical head used in heat-assisted magnetic recording (HAMR), mounting a laser diode chip on the slider offers a more integrated, compact, and stable design. However, the heat generated by the laser diode will cause the head temperature to increase, which may decrease the laser output power and change the slider flying status. In this paper, the thermal analysis of the HAMR head including the laser diode and a transducer is conducted. The effects of the laser diode power, the power absorbed by the transducer, boundary thermal resistance between the laser diode chip and the slider substrate, and slider fly speed and fly height on the laser temperature increase, the transducer temperature increase, and the air-bearing surface temperature distribution are studied. The deformation of the air-bearing surface caused by its temperature change is also analyzed.

show abstract