three-photon

基本解释

Both the red and green emissions of Er 3+ in oxyfluoride host are due to two photon process. The green emission in ZBLAN is due to two photon process, and the red emission is due to two and three photon processes.
分析了两种基质中Er3+ 的上转换发光机制 ,氟氧化物基质中Er3+ 离子红绿光发射均为双光子过程 ,ZBLAN基质中Er3+ 离子绿光发射为双光子过程 ,而红光发射为双光子和三光子混合过程。
three photon resonant ionization
三光子共振电离
The Si-SiO_2 composite and Si inverse opal have three photonic band gaps lying in band2-band3, band5-band6,band8-band9. The gap width between band5-band6 is relatively narrow.
Si-SiO2复合体与Si反Opal垂直(111)面入射时,在较高的填充率下存在三个光学带隙,分别位于band2-band3、band5-band6、band8-Band9,其中band2-band3之间的带隙较宽,band5-band6之间的带隙较窄,band8-band9之间的带隙会产生完全带隙。
He trudge three hour in the snow to get back home.
他在雪中跋涉三个钟点才回到家。
Our family reunions are always three ring circus.
我家合家团聚的场面总是热闹非凡。