Resonator using polarization beam splitter prism for microlithography KrF excimer laser

Keiichiro Yamanaka, Yuji Hashidate, Hidemi Takahashi, Nobuaki Furuya

研究成果: Conference article査読


We discuss a new resonator design for sub-pm bandwidth (FWHM) KrF excimer laser using an etalon, a grating and prisms. This resonator uses a polarization beam splitter prism (PBSP) which has both functions of splitting polarized beam and beam expansion to reduce the resonator length. In our experiments, the output power is improved 29.4% by using PBSP in comparison with the conventional method, while the bandwidth (FWHM) is reduced from less than 0.9pm to less than 0.6pm at the same time. A calculation has been done to confirm the output power dependence on the resonator length and the loss of optics. Its result explains our experimental results approximately. We demonstrated that PBSP has a significant effect to improve the output power of the narrow bandwidth KrF excimer laser that would result in the extension of chamber lifetime. Furthermore, this technique will help the development of the band narrowing excimer laser for microlithography.

ジャーナルProceedings of SPIE - The International Society for Optical Engineering
出版ステータスPublished - 1998
イベントLaser Resonators - San Jose, CA, United States
継続期間: 1998 1月 261998 1月 27

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • コンピュータ サイエンスの応用
  • 応用数学
  • 電子工学および電気工学


「Resonator using polarization beam splitter prism for microlithography KrF excimer laser」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。