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

被引：27

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

页码：14627 / 14635

页数：9

共 18 条

[1] Ultrafast Scan Techniques for 3D-μm Structuring of Metal Surfaces with high repetitive ps-laser pulses [J].