Adaptive aberration correction of a 5 J/6.6 ns/200 Hz solid-state Nd:YAG laser

Xin Yu; Lizhi Dong; Boheng Lai; Ping Yang; Shanqiu Chen; Wenjin Liu; Shuai Wang; Guomao Tang; Jisi Qiu; Zhijun Kang; Yueliang Liu; Hao Liu; Yong Liu; Zhongwei Fan; Bing Xu

doi:10.1364/OL.42.002730

Optics Letters
Vol. 42,
Issue 14,
pp. 2730-2733
(2017)
•https://doi.org/10.1364/OL.42.002730

Adaptive aberration correction of a 5 J/6.6 ns/200 Hz solid-state Nd:YAG laser

Xin Yu, Lizhi Dong, Boheng Lai, Ping Yang, Shanqiu Chen, Wenjin Liu, Shuai Wang, Guomao Tang, Jisi Qiu, Zhijun Kang, Yueliang Liu, Hao Liu, Yong Liu, Zhongwei Fan, and Bing Xu

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Xin Yu, Lizhi Dong, Boheng Lai, Ping Yang, Shanqiu Chen, Wenjin Liu, Shuai Wang, Guomao Tang, Jisi Qiu, Zhijun Kang, Yueliang Liu, Hao Liu, Yong Liu, Zhongwei Fan, and Bing Xu, "Adaptive aberration correction of a 5 J/6.6 ns/200 Hz solid-state Nd:YAG laser," Opt. Lett. 42, 2730-2733 (2017)

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Abstract

In this Letter, we present an adaptive aberration correction system to simultaneously compensate for aberrations and reshaping the beams. A low-order aberration corrector is adapted. In this corrector, four lenses are mounted on a motorized rail, whose positions can be obtained using a ray tracing method based on the beam parameters detected by a wavefront sensor. After automatic correction, the PV value of the wavefront is reduced from 26.47 to 1.91 μm, and the beam quality $β$ is improved from 18.42 to 2.86 times that of the diffraction limit. After further correction with a deformable mirror, the PV value of the wavefront is less than 0.45 μm, and the beam quality is 1.64 times that of the diffraction limit. To the best of our knowledge, this is the highest performance from such a high-power, high-pulse repetition rate Nd:YAG solid-state laser ever built.

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Element	Type	Curvature Radius	Thickness
$L_{x 1}$	X direction	$R_{x 1} = - 33.79$	$a_{1} = 5.00$
	Plano-concave	$R = Infinity$
	Cylindrical lens	$R = Infinity$
$L_{r 1}$	Plane-concave	$R = Infinity$	$a_{2} = 7.00$
	Spherical lens	$R_{1} = 91.69$	$a_{2} = 7.00$
$L_{r 2}$	Plano-convex	$R_{2} = 114.62$	$a_{3} = 8.00$
	Spherical lens	$R = Infinity$	$a_{3} = 8.00$
$L_{x 2}$	X direction	$R_{x 2} = 260.00$	$a_{4} = 8.00$
	Plano-convex	$R = Infinity$
	Cylindrical lens	$R = Infinity$

Size (mm)	Angle (mrad)	PV (μm)	RMS (μm)	$β$
$x = 3.50 y = 17.50$	$θ_{x} = 0.94 θ_{y} = 3.40$	26.47	6.12	18.42

Optical Layout (mm)				Correction Result
$d_{0}$	$d_{1}$	$d_{2}$	$d_{3}$	PV(um)	RMS(um)	$β$
54.7	32.8	53.7	309.1	1.91	0.29	2.86

Element	Type	Curvature Radius	Thickness
$L_{x 1}$	X direction	$R_{x 1} = - 33.79$	$a_{1} = 5.00$
	Plano-concave	$R = Infinity$
	Cylindrical lens	$R = Infinity$
$L_{r 1}$	Plane-concave	$R = Infinity$	$a_{2} = 7.00$
	Spherical lens	$R_{1} = 91.69$	$a_{2} = 7.00$
$L_{r 2}$	Plano-convex	$R_{2} = 114.62$	$a_{3} = 8.00$
	Spherical lens	$R = Infinity$	$a_{3} = 8.00$
$L_{x 2}$	X direction	$R_{x 2} = 260.00$	$a_{4} = 8.00$
	Plano-convex	$R = Infinity$
	Cylindrical lens	$R = Infinity$

Size (mm)	Angle (mrad)	PV (μm)	RMS (μm)	$β$
$x = 3.50 y = 17.50$	$θ_{x} = 0.94 θ_{y} = 3.40$	26.47	6.12	18.42

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