Effect of intracavity perturbation on modes of virtual confocal resonators and Zernike aberration fit
-
1.
Department of Optoelectronic Technology, Chengdu University of Information Technology, Chengdu 610225, China
-
Received Date:
2008-07-28
Accepted Date:
2008-10-15
-
Abstract
In order to improve the output beam quality and energy for high power lasers,firstly,the influence of intracavity aberrated perturbation on the eigenmode of unstable resonators was analyzed.Then,the effect of intracavity phase-tilted perturbation on the mode intensity and phase distribution for passive positive-branch confocal unstable resonators was calculated by means of numeric iterative method.Finally,the phase property of the output beam was analyzed based on Zernike mode-reconstruction theory so that the front 35-order Zernike aberration coefficients,the point spread function (PSF) and the integrated relative far-field intensity were obtained.Now the laser beam quality was fully illustrated.The results illustrate that in a confocal unstable resonator with a small Fresnel number,small phase-tilted perturbation has not only a remarkable influence on the output beam intensity but also the phase structure,and it makes higher order Zernike aberration such as A3,A7 and A10 increase in the beam phase structure.The results are of some reference to further investigation on the intracavity aberration compensation for high power lasers.
-
-
References
|
[1]
|
ZHOU B K,GAO Y Zh,CHEN T R,et al.The principle of laser[M].5th ed.Beijing:National Defense Industry Press,2004:88-98(in Chinese). |
|
[2]
|
LUBEIGT W,VALENTINE G,BURNS D.Enhancement of laser per-formance using an intracavity deformable membrane mirror[J].Optics Express,2008,16(15):10943-10955. |
|
[3]
|
VDOVIN G,VADIM K.Intracavity control of a 200W continuous-wave Nd:YAG laser by a micromachined deformable mirror[J].Opt Lett,2001,26(11):798-800. |
|
[4]
|
ZHANG X,YANG W,XU B,et al.Experimental research for maladjustment properties of passive confocal unstable resonator[J].Opto-electronics Engineering,2006,33(5):48-52(in Chinese). |
|
[5]
|
LI B Ch.Experimental optimization of the output performance of a all-solid-state pulsed Nd:YAG laser[J].Laser Technology,2007,31(2):144-146(in Chinese). |
|
[6]
|
WANG N,LU Y T,KONG Y.Analysing the light intensity distribution of super-Gaussian mirror resonator by fast fourier-transform[J].Chinese Journal of Lasers,2004,31(11):1317-1322(in Chinese). |
|
[7]
|
DU Y Y.Stimulation of confocal unstable resonators using thin gain sheet[J].High Power Laser and Particle Beams,2000,12(3):301-305(in Chinese). |
|
[8]
|
LÜ B D.Solid-state laser[M].Beijing:Beijing University of Posts and Telecommunications Press,2002:113-138(in Chinese). |
|
[9]
|
SUJECKI S.Stability of steady-state high-power semiconductor lasermodels[J].J O S A,2007,B24(5):1053-1060. |
|
[10]
|
SIEGMAN A E,MILLER H Y.Unstable optical resonator loss calculations using the Prony method[J].Appl Opt,1970,9(12):2729-2736. |
|
[11]
|
OUGHSTUN K E.Intracavity adaptive optic compensation of phase aberrations.Ⅰ:analysis[J].J O S A,1981,71(7):862-872. |
|
[12]
|
CUBALCHINI R.Modal wave-front estimation from phase derivative measurements[J].J O S A,1979,69(7):972-977. |
|
[13]
|
ZOU W Y,ROLLAND J P.Iterative zonal wave-front estimation algorithm for optical testing with general-shaped pupils[J].J O S A,2005,A22(5):938-951. |
-
-
Proportional views
-
Map
DownLoad: