Nishikawa Tadashi, Ozawa Akira, Nishida Yoshiki, Asobe Masaki, Hong Feng-Lei, Hänsch Theodor W
NTT Basic Research Laboratories, NTT Corporation, 3-1 Morinosato Wakamiya, Atsugi-shi, Kanagawa 243-0198, Japan.
Opt Express. 2009 Sep 28;17(20):17792-800. doi: 10.1364/OE.17.017792.
A solid-state-laser based single-frequency 589 nm light source that can be easily used in the laboratory is needed for sodium spectroscopy studies and cold sodium atom experiments. This paper shows that by using a periodically poled Zn-doped LiNbO(3) ridge waveguide for sum-frequency generation, we can obtain a high conversion efficiency to 589 nm light from two sub-watt 1064 and 1319 nm Nd:YAG lasers via a simple single pass wavelength conversion process without employing an enhancement cavity. A 494 mW light at 589 nm is generated and achieves overall conversion efficiency from the laser power of 41%. Excellent long-term stability of output power is obtained and its standard deviation is characterized to be 0.09%.
钠光谱研究和冷钠原子实验需要一种易于在实验室中使用的基于固态激光器的单频589纳米光源。本文表明，通过使用周期性极化的掺锌铌酸锂脊形波导进行和频产生，我们可以通过简单的单程波长转换过程，从两个亚瓦级的1064纳米和1319纳米钕:钇铝石榴石激光器获得向589纳米光的高转换效率，而无需使用增强腔。产生了494毫瓦的589纳米光，实现了相对于激光功率41%的总转换效率。获得了出色的输出功率长期稳定性，其标准偏差为0.09%。
