The impact of MgO-doped near-stoichiometric lithium niobate crystals on the THz wave output characteristics
The control experimental study on the THz wave parametric oscillator (TPO) output characteristics based on the congruent LiNbO3 crystal (CLN) and stoichiometric MgO-doped lithium niobate (SLN) crystal is performed. As a nonlinear medium, in the aspect of the THz wave output, experiments show that the congruent LiNbO3 crystal is more stable than the SLN crystal. Compared with the CLN crystal, SLN showed significant photorefractive effect, which adversely the stability of the THz wave output. Experiments indicated that different molar concentration of MgO doped, can significantly change the photorefractive properties of SLN crystal. The results showed that with the increase of MgO doping concentration, die photorefractive of SLN gradually become weaker, and THz wave output stability has the significantly increase. The output stability of mol 5.0％ MgO droped SLN crystal, has not significantly different with the CLN. hi the contrast experiment of TPO with the 160mm cavity length and 65mm crystal length, the pump laser threshold of the 5％ mol MgO: SLN crystal decreased by 23％ than the CLN crystal, while the peak THz energy output increased 28％.
Zhang Xianbin Li Yunfeng Ma lijuan Yuan ke Shi Wei
Department of Applied Physics, Xian university of technology, Xian 710048, China
国际会议
3rd International Photonics & OptoElectronics Meetings(第三届国际光子与光电子学会议 POEM 2010)
武汉
英文
1-5
2010-11-03（万方平台首次上网日期，不代表论文的发表时间）