Changes in the Beam Parameters of Partially Coherent Sinh-Gaussian Beams after Passage through an Astigmatic Lens

Abstract:

Based on the propagation law of partially coherent beams, the analytical expression of the beam width, waist positions and the far-field divergence angle of partially coherent sinh-Gaussian (ShG) beams through an astigmatic lens were derived. The effect of astigmatism and spatial coherence parameter on the beam parameters was mainly analyzed. It is found that the beam width depends on the astigmatic coefficient, spatial coherence parameter, decentered parameter, fresnel number and propagation distance in general. The astigmatism results in a difference between the beam widths, waist positions and far-field divergence angles in the x and y directions.

• Periodical: Applied Mechanics and Materials (Volumes 738-739)
• Pages: 434-439
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.738-739.434
• Online since: March 2015
• Authors: Chang Wei Li*, Xiao Ping Kang, Zhong He
• Keywords: Astigmatic Lens, Beam Parameters, Partially Coherent Sinh-Gaussian (ShG) Beams

References

[1] Mandel L, Wolf E. Cambridge: University Press, (1995).

[2] Goodman J W. New York: Wiley & Sons, (1985).

[3] Friberg A T, Visser T D, Wolf E. Opt. Lett, 2000, 25 (6): 366-368.

[4] Ponomarenko S A, Wolf E. Opt. Lett. 2000, 25(9): 663 -665.

[5] Alda J, Alonso J, Bernabeu E, J Opt Soc Am A, 1997, 14(10): 2737-2747.

[6] B. Lü, B. Zhang, B. Cai. Optik. 1995, 101: 42-46.

[7] B. Lü, B. Zhang, B. Cai. J. Mod. Opt. 1995, 42: 523-540.

[8] J. Pu, S. Nemoto, W. Zhang. J. Mod. Opt. 2000, 47: 605-612.

[9] C. W. Li, B.D. LÜ. Optik , 2009, 120(8): 374-378.

[10] Casperson L W, Hall D G, Tovar A A. J Opt Soc Am A, 1997, 14(12): 3341-3348.

[11] Siegman A E. S P I E, 1990, 1224: 2-14.