Simultaneous compensation for spatial and temporal dispersion of acousto-optical deflectors for two-dimensional scanning with a single prism
Simultaneous compensation for spatial and temporal dispersion of acousto-optical deflectors for two-dimensional scanning with a single prism
复制标题
DOI：
10.1364/ol.31.001091
复制
发表时间：
2006-04-15
期刊：
影响因子：
3.6
通讯作者：
Luo, QM
中科院分区：
文献类型：
--
作者：
Zeng, SQ;Lv, X;Luo, QM
声光偏转器(AOD)的色散特性对两个连续的正交声光偏转器(二维AOD)作为XY扫描器在多光子显微镜中的应用提出了挑战。在二维(2D)AOD之前引入棱镜允许同时补偿时间和空间色散。在没有补偿的情况下，激光脉冲被展宽到572ps，在补偿的情况下，脉冲展宽到143ps。出射激光光斑的长短轴之比，无补偿时为3.50，补偿后为1.14。插入损耗为37%。双光子荧光显微镜使用补偿的2D AOD扫描器对荧光微球成像，与未补偿的扫描器相比，信号强度提高了近15倍。(C)2006年美国光学学会。
The dispersive nature of the acousto-optical deflector (AOD) presents a challenge to applications of two sequential orthogonal AODs (a two-dimensional AOD) as XY scanners in multiphoton microscopy. Introducing a prism before the two-dimensional (2D) AOD allows both temporal and spatial dispersion to be compensated for simultaneously. A 90 fs laser pulse was broadened to 572 fs without compensation, and 143 fs with compensation. The ratio of long axis to short axis of the exiting laser beam spot was 3.50 without compensation and 1.14 with compensation. The insertion loss was 37%. Two-photon fluorescence microscopy used the compensated 2D AOD scanner to image a fluorescent microsphere, which improves signal intensity similar to 15-fold compared with the uncompensated scanner. (c) 2006 Optical Society of America.