Romboy A, Döring M, Cvecek K, Schmidt M (2026)
Publication Type: Conference contribution
Publication year: 2026
Publisher: Elsevier B.V.
Book Volume: 143
Pages Range: 17-20
Conference Proceedings Title: Procedia CIRP
Event location: Heinrich-Lades-Halle, DEU
DOI: 10.1016/j.procir.2026.07.005
We present a method for overcoming the wavelength limitation of LCoS-SLM by using Second Hamonic Generation while preserving the beam shape. This was achieved by placing a Type-1 Phase-matched BBO-crystal in the Fourier-plane after the SLM. This method is able to frequency convert the hologram while preserving fine details and without being limited by the angular acceptance of the crystal. Additionally, by removing the necessity of having to work on-axis (like with previously shown Type-2 PM methods), the 0-order beam can be removed. We also found that the quality of the frequency converted hologram degrades, if the length of the crystal is longer than the hologram’s depth of focus due to interangular mixing.
APA:
Romboy, A., Döring, M., Cvecek, K., & Schmidt, M. (2026). Dynamic Arbitrary Non-Linear Beam Shaping using Collinear Fourier-Space Type-1 Phase-Matched Second Harmonic Generation. In Procedia CIRP (pp. 17-20). Heinrich-Lades-Halle, DEU: Elsevier B.V..
MLA:
Romboy, Alexander, et al. "Dynamic Arbitrary Non-Linear Beam Shaping using Collinear Fourier-Space Type-1 Phase-Matched Second Harmonic Generation." Proceedings of the 14th CIRP Conference on Photonic Technologies, LANE 2026, Heinrich-Lades-Halle, DEU Elsevier B.V., 2026. 17-20.
BibTeX: Download