摘要
We report on second harmonic generation(SHG) in on-chip high-Q(>105) lithium niobate(Li Nb O3, LN) microresonators fabricated by femtosecond laser micromachining. We examine the efficiency of SHG with either a continuous-wave(CW) or an ultrashort pulsed pump laser. The normalized conversion efficiencies of SHG obtained with the CW and pulsed pump lasers are measured to be 1.35×10?5 m W?1 and 2.30×10?6 m W?1, respectively.
We report on second harmonic generation （SHG） in on-chip high-Q （〉10^5） lithium niobate （LiNbO3, LN） microresonators fab- ricated by femtosecond laser micromachining. We examine the efficiency of SHG with either a continuous-wave （CW） or an ultrashort pulsed pump laser. The normalized conversion efficiencies of SHG obtained with the CW and pulsed pump lasers are measured to be 1.35×10-5 m W-1 and 2.30×10-6 m W-1, respectively.
基金
supported by the National Key Basic Research Program of China(Grant No.2014CB921300)
the National Natural Science Foundation of China(Grant Nos.61275205,11174305 and 61205209)
the Fundamental Research Funds for the Central Universities
关键词
科学学
科学知识
物理学
力学
天文学
second harmonic generation, femtosecond laser micromachining, lithium niobate microresonator
