Beam shaping and high-speed, cylinder-lens-free beam guiding using acousto-optical deflectors without additional compensation optics

被引：25
作者：
Bechtold, Peter [1 ,2 ]
Hohenstein, Ralph [1 ,2 ]
Schmidt, Michael [1 ,2 ,3 ]
机构：
[1] Univ Erlangen Nurnberg, Inst Photon Technol, D-91052 Erlangen, Germany
[2] Bayer Laserzentrum GmbH, D-91052 Erlangen, Germany
[3] Univ Erlangen Nurnberg, Erlangen Grad Sch Adv Opt Technol SAOT, D-91052 Erlangen, Germany
来源：
OPTICS EXPRESS | 2013年 / 21卷 / 12期
关键词：
NEURONAL-ACTIVITY; LASER-PULSES; MICROSCOPY; SYSTEM;
D O I：
10.1364/OE.21.014627
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Using acousto-optical deflectors at high deflection speeds via acoustical frequency chirping induces astigmatism, deforming the laser beam in an unfavorable way. Within the paper, we present a method to prevent this effect for an ultrashort pulsed laser beam via acoustical frequency jumps synchronized to the pulse-to-pulse pause. We also demonstrate and give a method to calculate beam shaping capability of acousto-optical deflectors via arbitrary spatial frequency developments during ultrashort laser pulse transit through the deflector. Cylinder-lens-free deflection at >2000 rad/s and beam shaping capability is demonstrated experimentally. In our experiments the switching time between two beam shapes is 1 mu s. (C)2013 Optical Society of America
引用
收藏
页码：14627 / 14635
页数：9
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