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Optica Publishing Group
  • Current Optics and Photonics
  • Vol. 4,
  • Issue 5,
  • pp. 441-445
  • (2020)

Design of a Fresnel Lens for a Solar End-pumped Solid-state Laser

Open Access Open Access

Abstract

A novel design for a Fresnel lens for a solar end-pumped laser is demonstrated in this paper. The new hybrid Fresnel lens includes two parts, inner and outer. The inner part is a twice-total-internal-reflection and vertical-transmission lens. The outer part is a once-total-reflection and vertical-transmission lens. The radius of the Fresnel lens is 600 mm, and its focal length is 750 mm. The concentrating performance of the Fresnel lens is examined using TracePro. The results show that the concentration efficiency has been greatly improved. The total concentration efficiency of the hybrid Fresnel lens reaches 73.2% when the radius of the laser rod is 3 mm. This design can simplify the concentration system of a solar endpumped solid-state laser.

© 2020 Optical Society of Korea

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