1) accumulated photon echo
累积光子回波
1.
Dephasing processes of coherent Frenkel excitons were studied using accumulated photon echo with double modulation and heterodyne detection technique.
用双调制外差检测的累积光子回波技术研究了相干弗兰克尔（Ｆｒｅｎｋｅｌ）激子失相过程。
2.
hase relaxation processes of one-dimension Frenkel excitons in organic nanostructure PIC-I and azaPIC-I mixed aggregates were investigated using heterodyne-detected accumulated photon echoes with double modulations(chopper and standing wave modulator).
用双调制（斩波器和驻波调制器）和外差检测累积光子回波技术，研究了ＰＩＣ－Ｉ和ａｚａＰＩＣ－Ｉ混合分子集体有机纳米材料中一维Ｆｒｅｎｋｅｌ激子的位相弛豫过程。
2) photon echo
光子回波
1.
When the pump beams have broadband linewidth, two photon four wave mixing(FWM)is related to sum frequency three level photon echo with relative time delay τ>0.
对四能级系统超快调制光谱学（ＵＭＳＦＳ）中的光子回波进行了研究。
2.
When the pump beams have broadband linewidth, one photon four wave mixing (FWM) is related to the three pulse stimulated photon echo with relative time delay τ>0.
利用相位共轭极化拍频光谱术对 V型三能级系统中的光子回波进行了研究。
3.
Free induction decay and photon echo in such a system were then derived.
由随机电报过程的性质出发，给出了频率受一个随机电报过程调制系统的Ｂｌｏｃｈ方程，得到了这种系统中的自由感应衰减和光子回波衰减。
3) returned photon numbers
回波光子数
1.
The goal of this thesis is to study a new technical method for increasing returned photon numbers for the lunar laser ranging, and to try to increase the successful probability of the lunar laser ranging.
本论文的目的是探索提高激光测月回波光子数的新方法 ,进而增加激光测月成功的几率。
4) photon echo
光量子回波
5) accumulation filtering
积累滤波
6) integral luminous flux
累积光通
补充资料：单次激发回波平面成像
单次激发回波平面成像
磁共振成像术语。磁共振快速成像的方法之一。仅使用一次射频(RF)脉冲激励来获得图像的回波平面成像(EPI)方式。在EPI数据采集过程中令读出梯度快速往返振荡，产生一个相位编码彼此独立的梯度回波链，最终形成一幅图像。单次激发EPI采集时间短，一般仅为50～100ms，但存在着信号强度低、空间分辨率低、视野受限、磁敏感性伪影明显等缺点，这些缺点随技术的进步正在不断地克服。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条