Chinese Optics Letters, Vol. 6, Issue 5, 317 (2008)
Second harmonic 423-nm laser generated by BIBO crystal for calcium optical frequency standard
Zhenhui Chen, Bo Lu, Zhixue Xu, Wei Zhuang, Chuang Yu, Deshui Yu, Kaikai Huang, Xuzong Chen, and Jinbiao Chen*
- School of Electronics Engineering and Computer Science, Peking University, Beijing 1008712 Beijing Uni-Quanta Co. Ltd, Beijing 100871
Calcium is one prospective element for the modern optical frequency standard. The 423-nm transition line of calcium atoms has been widely used in laser slowing and laser cooling, the precise spectrum measurement, and the magnetic optical trapping (MOT). However, there is no any available commercial diode laser working at this wavelength. We built a 423-nm laser based on extra bow-tie cavity and by using a Brewster-cut uncoated BIBO (BiB3O6) crystal, which worked at room temperature, with conversion efficiency of 3.75%, and a potential up to 20%.