three-photon

基本解釋

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(zhì)中Er3+ 的上轉(zhuǎn)換發(fā)光機(jī)制 ,氟氧化物基質(zhì)中Er3+ 離子紅綠光發(fā)射均為雙光子過(guò)程 ,ZBLAN基質(zhì)中Er3+ 離子綠光發(fā)射為雙光子過(guò)程 ,而紅光發(fā)射為雙光子和三光子混合過(guò)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復(fù)合體與Si反Opal垂直(111)面入射時(shí),在較高的填充率下存在三個(gè)光學(xué)帶隙,分別位于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(huì)產(chǎn)生完全帶隙。
He trudge three hour in the snow to get back home.
他在雪中跋涉三個(gè)鐘點(diǎn)才回到家。
Our family reunions are always three ring circus.
我家合家團(tuán)聚的場(chǎng)面總是熱鬧非凡。