A Fabry-Perot Etalon with an Ultralow Expansion Ceramic Spacer

作者：Hosaka Kazumoto^*; Inaba Hajime; Akamatsu Daisuke; Yasuda Masami; Sugawara Jun; Onae Atsushi; Hong Feng Lei

来源：Japanese Journal of Applied Physics, 2013, 52(3): 032402.

DOI：10.7567/JJAP.52.032402

We have developed a Fabry-Perot etalon with an ultralow expansion ceramic spacer and investigated the thermal properties of the ceramic. We found that the ceramic cavity has a "zero crossing temperature" at room temperature where the thermal expansion coefficient crosses zero. The sensitivity of the thermal expansion coefficient of the ceramic to temperature change is about five times greater than that of ultralow expansion (ULE) glass at around the zero cross temperature. Nevertheless, owing to the high specific rigidity and relatively low thermal expansion at room temperature, the ceramic should be an attractive material for long optical cavities that can reduce the effect of the thermal noise relatively.

• 出版日期2013-3