Achromatic anamorphic anastigmatic laser focusing

Lei Meng

doi:10.1364/AO.413477

Applied Optics
Vol. 60,
Issue 12,
pp. 3440-3445
(2021)
•https://doi.org/10.1364/AO.413477

Achromatic anamorphic anastigmatic laser focusing

Lei Meng

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Lei Meng, "Achromatic anamorphic anastigmatic laser focusing," Appl. Opt. 60, 3440-3445 (2021)

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Abstract

This paper presents a simple method to focus multi-wavelength circular laser beams to elliptical spots (anamorphic) at a common waist location (achromatic) on both major and minor axes of the ellipse (anastigmatic), provided that each wavelength can be pre-shaped to appropriate waist sizes and locations. All lenses in the system are low-cost dispersive singlets and can be made out of the same material. The characteristics of Gaussian beam transformation through lenses are used to analyze how it works.

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Data Availability

Data underlying the results presented in this paper are not publicly available at this time but may be obtained from the authors upon reasonable request.

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	$λ$ (nm)	$w_{0}$ (mm)	$z_{R}$ (m)	$s$ (mm)	$f$ (mm)	$s^{'}$ (mm)	$w_{0}^{'}$ (mm)
$λ_{1}$	355	1.09	10.5	48.15	48.15	48.15	0.005
$λ_{2}$	488	1.54	15.2	49.51	49.51	49.51	0.005
$λ_{3}$	640	2.04	20.5	50.19	50.19	50.19	0.005

	$λ$ (nm)	$w_{0}$ (mm)	$z_{R}$ (m)	$s$ (mm)	$f$ (mm)	$s^{'}$ (mm)	$w_{0}^{'}$ (mm)
$λ_{1}$	355	0.17	0.27	1706	48.15	49.51	0.005
$λ_{2}$	488	1.54	15.2	49.51	49.51	49.51	0.005
$λ_{3}$	640	0.37	0.66	−3576	50.19	49.51	0.005

	$λ$ (nm)	$w_{0 x}$ (mm)	$z_{R x}$ (m)	$s_{x}$ (mm)	$f_{F F L}$ (mm)	$s_{x}^{'}$ (mm)	$w_{0 x}^{'}$ (mm)
$λ_{1}$	355	0.17	0.25	91.3	48.15	49.66	0.0317
$λ_{2}$	488	0.26	0.42	49.5	49.51	49.51	0.030
$λ_{3}$	640	0.34	0.58	−18.5	50.19	49.68	0.0297

	$λ$ (nm)	$w_{0}$ (mm)	$z_{R}$ (m)	$s$ (mm)	$f$ (mm)	$s^{'}$ (mm)	$w_{0}^{'}$ (mm)
$λ_{1}$	355	1.09	10.5	48.15	48.15	48.15	0.005
$λ_{2}$	488	1.54	15.2	49.51	49.51	49.51	0.005
$λ_{3}$	640	2.04	20.5	50.19	50.19	50.19	0.005

	$λ$ (nm)	$w_{0}$ (mm)	$z_{R}$ (m)	$s$ (mm)	$f$ (mm)	$s^{'}$ (mm)	$w_{0}^{'}$ (mm)
$λ_{1}$	355	0.17	0.27	1706	48.15	49.51	0.005
$λ_{2}$	488	1.54	15.2	49.51	49.51	49.51	0.005
$λ_{3}$	640	0.37	0.66	−3576	50.19	49.51	0.005

Abstract

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Tables (3)

Equations (6)

Applied Optics