Experimental explorations of the high-order Gaussian mode transformation based on blind-optimization adaptive optics

被引:6
作者
Zhao, Hai-Chuan [1 ]
Wang, Xiao-Lin [1 ]
Zhou, Pu [1 ]
Ma, Hao-Tong [1 ]
Ma, Yan-Xing [1 ]
Wang, San-Hong [1 ]
Xu, Xiao-Jun [1 ]
Zhao, Yi-Jun [1 ]
机构
[1] Natl Univ Def Technol, Coll Optoelect Sci & Engn, Changsha 410073, Hunan, Peoples R China
关键词
PHASE ELEMENTS; BEAM; CONVERSION; SELECTION;
D O I
10.1016/j.optcom.2011.04.055
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We present research on high-order Gaussian laser beam transformation by using adaptive optics (AO) technique. Numerical simulation for a mode transformation system based on stochastic parallel gradient descent (SPGD) algorithm was accomplished, along with experimental results obtained for a transformation of TEM20 mode with 37 control channels. The far-field energy centrality of TEM20 mode was advanced and the evaluation function increased more than a factor of 6 after transformation. The experiments results indicate the feasibility of blind-optimization AO in mode transformation system. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码:4654 / 4657
页数:4
相关论文
共 20 条
[1]   Laser beam quality, entropy and the limits of beam shaping [J].
Graf, T ;
Balmer, JE .
OPTICS COMMUNICATIONS, 1996, 131 (1-3) :77-83
[2]   Conversion of a high-order mode beam into a nearly Gaussian beam by use of a single interferometric element [J].
Ishaaya, AA ;
Machavariani, G ;
Davidson, N ;
Friesem, AA ;
Hasman, E .
OPTICS LETTERS, 2003, 28 (07) :504-506
[3]  
Ishaaya AA, 2002, OPT PHOTONICS NEWS, V13, P43, DOI 10.1364/OPN.13.12.000043
[4]  
ISHAAYA AA, 2001, OPTICS PHOTONICS NEW, P55
[5]   Spatially variable retardation plate for beam brightness enhancement in a high-power laser [J].
Machavariani, G. ;
Jackel, S. ;
Lumer, Y. ;
Moshe, I. ;
Meir, A. .
OPTICS LETTERS, 2007, 32 (17) :2626-2628
[6]   Efficient conversion of a radially polarized beam to a nearly Gaussian beam [J].
Machavariani, G. ;
Lumer, Y. ;
Moshe, I. ;
Jackel, S. ;
Davidson, N. .
OPTICS LETTERS, 2007, 32 (08) :924-926
[7]   Efficient mode transformations of degenerate Laguerre-Gaussian beams [J].
Machavariani, G ;
Ishaaya, AA ;
Shimshi, L ;
Davidson, N ;
Friesem, AA ;
Hasman, E .
APPLIED OPTICS, 2004, 43 (12) :2561-2567
[8]   MODE AND FREQUENCY CONTROL OF COMPACT CO2 SLAB LASERS THROUGH INTRACAVITY COHERENT IMAGING [J].
MORLEY, RJ ;
YELDEN, EF ;
BAKER, HJ ;
HALL, DR .
APPLIED OPTICS, 1995, 34 (03) :418-425
[9]   ZERNIKE POLYNOMIALS AND ATMOSPHERIC-TURBULENCE [J].
NOLL, RJ .
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA, 1976, 66 (03) :207-211
[10]   Discontinuous phase elements for transverse mode selection in laser resonators [J].
Oron, R ;
Danziger, Y ;
Davidson, N ;
Friesem, AA ;
Hasman, E .
APPLIED PHYSICS LETTERS, 1999, 74 (10) :1373-1375