A cavity-snom (scanning near-field optical microscopy) head using a laser diode

Kenchi Ito, Toshimichi Shintani, Sumio Hosaka, Masaru Muranishi

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

A cavity-SNOM (scanning near-field optical microscope) head using a laser diode is proposed and studied theoretically and experimentally. Theoretically, we study the optical properties using conventional rate equations. Several conditions to detect the SNOM signal with a photodiode are discussed. Experimentally, the dependence of output power of the laser diode on the injection current is measured. A sufficiently strong modulation signal is detected using a tapered fiber as the probe, but no modulation signal is detected using a tapered fiber with a small aperture (SNOM probe). The conditions for detecting a signal using a SNOM probe are also discussed, and we suggest that a laser diode with a SNOM probe fabricated on its facet is essential for realizing a practical cavity-SNOM head.

Original languageEnglish
Pages (from-to)3759-3763
Number of pages5
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume37
Issue number6 SUPPL. B
DOIs
Publication statusPublished - 1998 Jun

Keywords

  • Cavity
  • Laser diode
  • Optical recording
  • SNOM

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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