简介:Frequency-doubledantireflectioncoatingssimultaneouslyeffectiveat1064nmand532nmweredepositedonthelithiumtriborate(LiB3O5orLBO)crystalsusingtheelectronbeamevaporationmethod.Comparingwiththesamplewithoutbufferlayer,itisfoundthattheadhesionofthesamplewithbufferlayerofSiO2betweencoatingandLBOsubstrateisimprovedsignificantlyfrom137.4mNtogreaterthan200mN.Andthelaser-induceddamagethresholdisincreasedby20%from15.1J/cm2to18.6J/cm2.ThestrengtheningmechanismofadhesionofthebufferlayerofSiO2isdiscussedbyconsideringfullplasticindentationandsheartheory.
简介:在腔内倍频激光器中,非线性晶体的温度梯度造成的相位失配是影响谐波转化效率的关键。用半解析热分析方法得出了非线性晶体U如在不同基频光参量条件下的温度分布,分析了不同参量对晶体温度分布的影响。分析了温度梯度引起的相位失配对谐波转化总效率的影响,并在不同参量情况下对谐波相对转化效率进行了计算。对腔内倍频激光系统的设计有指导作用。