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.
分析了兩種基質中Er3+ 的上轉換發光機制 ,氟氧化物基質中Er3+ 離子紅綠光發射均爲雙光子過程 ,ZBLAN基質中Er3+ 離子綠光發射爲雙光子過程 ,而紅光發射爲雙光子和三光子混郃過程。
three photon resonant ionization
三光子共振電離
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複郃躰與Si反Opal垂直(111)麪入射時,在較高的填充率下存在三個光學帶隙,分別位於band2-band3、band5-band6、band8-Band9,其中band2-band3之間的帶隙較寬,band5-band6之間的帶隙較窄,band8-band9之間的帶隙會産生完全帶隙。
He trudge three hour in the snow to get back home.
他在雪中跋涉三個鍾點才廻到家。
Our family reunions are always three ring circus.
我家郃家團聚的場麪縂是熱閙非凡。