Effect of particle contamination of objective lens in a DVD-ROM drive on laser diode power and photo diode RF signal

Dae Young Lee, Yang Il Pae, Jaeho Lee, Jungho Hwang

Research output: Contribution to journalArticle

1 Citation (Scopus)


Air flow produced by disk rotation in an optical disk drive introduces air borne contaminant particles into the drive, which adhere to the objective lens and generates read/write errors. These particles are a serious problem for high-density storage devices and therefore, the effect of particle contamination in a digital versatile disk-read only memory (DVD-ROM) drive on laser diode power and photo diode RF signal was experimentally investigated. The laser power and amplitude of the photo diode RF were reduced, and the RF jitter was exponentially increased with increasing level of contamination of the lens. In addition, data could not be accessed when the contaminated surface area was greater than 20% of the lens surface area.

Original languageEnglish
Pages (from-to)3412-3413
Number of pages2
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Issue number5 B
Publication statusPublished - 2005 May 1


All Science Journal Classification (ASJC) codes

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

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