A high transmission power stabilizer using brewster window for a UV pulsed laser in long-term drift

Hyungwoo Lee, Hoonchul Ryoo, Jae W. Hahn

Research output: Contribution to journalArticle

Abstract

In this study, we developed a high transmission power stabilizer equipped with a Brewster window incorporating a proportional-integral-derivative (PID) controller. We used a 248 nm KrF excimer laser signals collected by a photodiode detector (PD) to stabilize the power fluctuation of pulsed laser in long-term drift situation. The power fluctuation averaged 2.73% after 45 minutes of uninterrupted operation. However, with the power stabilizer, the power fluctuation averaged 0.97%. The power stabilizer exhibited a maximum transmission rate of 96.9% which is better than that of conventional one and the maximum attenuated optical transmission reached 65.6%.

Original languageEnglish
Pages (from-to)2121-2125
Number of pages5
JournalJournal of Mechanical Science and Technology
Volume25
Issue number8
DOIs
Publication statusPublished - 2011 Aug

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering

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