Prototype mode index lens for heat assisted magnetic recording

L. Zhou, J. A. Bain, T. E. Schlesinger, M. Lang, Thomas D Milster

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

Mode index lenses for light delivery intended for use as part of a heat-assisted magnetic recording head were designed and tested. The waveguides in which these lenses were constructed consisted of a Si 3N 4 guiding layer on top of a SiO 2 cladding layer with thickness of 1 μm. The top confining layer of the waveguide was air. Mode index lenses were created by using Si 3N 4 regions of two different thicknesses (350 nm and 140 nm), having mode indices of 1.925 and 1.745, respectively. A scanned optical fiber was used to profile light scattered out of the waveguide. The measured spot size is 2.2 μm at the exit of the final lens in a three-lens sequence, which is an upper bound on the actual spot size with this resolution set by limitations of the measurement system.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsB.V.K. Vijaya Kumar, H. Kobori
Pages28-33
Number of pages6
Volume5380
DOIs
StatePublished - 2004
EventOptical Data Storage 2004 - Monterey, CA, United States
Duration: Apr 18 2004Apr 21 2004

Other

OtherOptical Data Storage 2004
CountryUnited States
CityMonterey, CA
Period4/18/044/21/04

Fingerprint

Magnetic recording
magnetic recording
Lenses
lenses
prototypes
heat
Waveguides
waveguides
recording heads
confining
Optical fibers
delivery
optical fibers
Hot Temperature
air
profiles
Air

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Zhou, L., Bain, J. A., Schlesinger, T. E., Lang, M., & Milster, T. D. (2004). Prototype mode index lens for heat assisted magnetic recording. In B. V. K. Vijaya Kumar, & H. Kobori (Eds.), Proceedings of SPIE - The International Society for Optical Engineering (Vol. 5380, pp. 28-33) https://doi.org/10.1117/12.556404

Prototype mode index lens for heat assisted magnetic recording. / Zhou, L.; Bain, J. A.; Schlesinger, T. E.; Lang, M.; Milster, Thomas D.

Proceedings of SPIE - The International Society for Optical Engineering. ed. / B.V.K. Vijaya Kumar; H. Kobori. Vol. 5380 2004. p. 28-33.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Zhou, L, Bain, JA, Schlesinger, TE, Lang, M & Milster, TD 2004, Prototype mode index lens for heat assisted magnetic recording. in BVK Vijaya Kumar & H Kobori (eds), Proceedings of SPIE - The International Society for Optical Engineering. vol. 5380, pp. 28-33, Optical Data Storage 2004, Monterey, CA, United States, 4/18/04. https://doi.org/10.1117/12.556404
Zhou L, Bain JA, Schlesinger TE, Lang M, Milster TD. Prototype mode index lens for heat assisted magnetic recording. In Vijaya Kumar BVK, Kobori H, editors, Proceedings of SPIE - The International Society for Optical Engineering. Vol. 5380. 2004. p. 28-33 https://doi.org/10.1117/12.556404
Zhou, L. ; Bain, J. A. ; Schlesinger, T. E. ; Lang, M. ; Milster, Thomas D. / Prototype mode index lens for heat assisted magnetic recording. Proceedings of SPIE - The International Society for Optical Engineering. editor / B.V.K. Vijaya Kumar ; H. Kobori. Vol. 5380 2004. pp. 28-33
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