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%.
Bibliographical noteFunding Information:
This research was supported by the Ministry of Knowledge Economy of Korea (Project number: 10030267-2008-21).
All Science Journal Classification (ASJC) codes
- Mechanics of Materials
- Mechanical Engineering