Beam transformation device using total internal reflection

Jiyoung Chu; Minhwan Seo; Sunghwi Cho; Woocheol Jeong; Hunyong Park; Sangwoo Bae; Wondon Joo

doi:10.1117/12.2567965

20 August 2020 Beam transformation device using total internal reflection

Jiyoung Chu, Minhwan Seo, Sunghwi Cho, Woocheol Jeong, Hunyong Park, Sangwoo Bae, Wondon Joo

Proceedings Volume 11486, Laser Beam Shaping XX; 114860K (2020) https://doi.org/10.1117/12.2567965
Event: SPIE Optical Engineering + Applications, 2020, Online Only

Conference Poster

Abstract

We present a novel optical device which interchanges two orthogonal directions in the cross-section of a beam. The optical prism is composed of six flat faces and has particular edge angles. The beam passing through the component is totally reflected at right angles inside the prism and flipped diagonally at the exit with respect to the entrance. When a line beam is incident to the device, the beam is segmented step by step at the first side face and combined on the other side. The overall shape of the line beam is maintained at the exit, but the segments of the line beam are flipped. The narrow axis of the line beam at the exit has the divergence angle corresponding to the long axis at the entrance. The component is also useful to focus beams from linear laser diode array with asymmetric divergence angles. Compared to the other beam transformation systems, the suggested device has advantages of easy fabrication, coating-free and no energy loss on reflective surfaces.

Citation Download Citation

Jiyoung Chu, Minhwan Seo, Sunghwi Cho, Woocheol Jeong, Hunyong Park, Sangwoo Bae, and Wondon Joo "Beam transformation device using total internal reflection", Proc. SPIE 11486, Laser Beam Shaping XX, 114860K (20 August 2020); https://doi.org/10.1117/12.2567965

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