[14a-B3-1~10] CS.1 3.5&3.14 Code-sharing session

[14a-B3-1] Development of Crystal Quartz Waveplates for a 57-μm CH₃OD Laser

〇Kazuya Nakayama¹, Shigeki Okajima¹, Tsuyoshi Akiyama², Kenji Tanaka², Kazuo Kawahata² (1.Chubu Univ., 2.NIFS)

Keywords:far infrared laser, waveplate

True zero-order waveplates for a 9R(8) CO₂ laser pumped 57-μm CH₃OD laser have been developed. The substrate is crystal quartz of 0.2635 mm in thickness. Commercial food wraps were used as an anti-reflection film. The film is about 10 μm thick. The quarter waveplate for the 57-μm CH₃OD laser has a transmittance of 90 % and a phase shift of 89 degrees.