The deposition and characteristics of an external cavity semiconductor laser for the lensless optical memory system

Young-Joo Kim, Y. Hasegawa, K. Goto

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

1 Citation (Scopus)

Abstract

The present optical memory system has been improved to realize high memory density, fast data transfer rate, and small head size. Compared to the magnetic memory, however, it has still some shortages such as slow tacking access speed and high fabrication cost due to the complicated optical parts and the relatively heavy weight of head. To overcome these limitations, the simple and small optical heads have been proposed using a semiconductor laser having thin films on the emitting facet. New ideas were based on the fact that a laser diode with good antireflection (AR) coating can act as an external cavity laser and oscillate with the media surface if it is close to the disk within a few micrometer distance. This simple optical head is good for both the phase change disk and the magneto-optical disk though the latter needs a lot of thin films on the semiconductor laser such as AR coatings, the quarter wave film, and Faraday rotator. In the presentation, we report the film deposition and characteristics on the emitting facet of semiconductor lasers and show same properties and possibility of our lensless optical memory system prepared at the research level.

Original languageEnglish
Title of host publicationCLEO/Pacific Rim 1999 - Pacific Rim Conference on Lasers and Electro-Optics
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages559-560
Number of pages2
Volume2
ISBN (Electronic)0780356616, 9780780356610
DOIs
Publication statusPublished - 1999 Jan 1
Event1999 Pacific Rim Conference on Lasers and Electro-Optics, CLEO/Pacific Rim 1999 - Seoul, Korea, Republic of
Duration: 1999 Aug 301999 Sep 3

Other

Other1999 Pacific Rim Conference on Lasers and Electro-Optics, CLEO/Pacific Rim 1999
CountryKorea, Republic of
CitySeoul
Period99/8/3099/9/3

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All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Computer Networks and Communications
  • Physics and Astronomy(all)

Cite this

Kim, Y-J., Hasegawa, Y., & Goto, K. (1999). The deposition and characteristics of an external cavity semiconductor laser for the lensless optical memory system. In CLEO/Pacific Rim 1999 - Pacific Rim Conference on Lasers and Electro-Optics (Vol. 2, pp. 559-560). [811569] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/CLEOPR.1999.811569