Near-field recording with high optical throughput aperture array

Phan Ngoc Minh, Takahito Ono, Shuji Tanaka, Kenya Goto, Masayoshi Esashi

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

To create and utilize a strong light source with sub-wavelength size has opened up a new frontier in optics, the near-field optics. One of the most attractive applications of the near-field optics is near-field optical data storage. The optical memory with high density and high data transfer rate is highly demanded to utilize an array of high throughput nano-scaled light sources for writing and reading bits on a medium. In this paper, we propose a hybrid structure of vertical cavity surface emitting laser (VCSEL) and aperture array for optical near-field memory head, namely VCSEL/NSOM. A technological solution for fabrication of the aperture array with Si micromachining technology is presented. An investigation of the optical performance of the near-field light at the apertures of the Si micromachined aperture array is presented. The primary result of writing and reading bits on a phase change (PC) medium using the fabricated structure is demonstrated.

Original languageEnglish
Pages (from-to)168-174
Number of pages7
JournalSensors and Actuators, A: Physical
Volume95
Issue number2-3
DOIs
Publication statusPublished - 2002 Jan 1

Keywords

  • AFM
  • Aperture array
  • Cantilever
  • Data storage
  • NSOM
  • Near-field optics

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electrical and Electronic Engineering

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