SAMOP 2023 – scientific programme
Parts | Days | Selection | Search | Updates | Downloads | Help
Q: Fachverband Quantenoptik und Photonik
Q 42: Poster III
Q 42.15: Poster
Wednesday, March 8, 2023, 16:30–19:00, Empore Lichthof
Sum-frequency generation in diced ridge waveguides in periodically poled LiNbO3 — •Noel Heinen, Christian Kießler, Michelle Kirsch, Harald Herrmann, and Christine Silberhorn — Paderborn University, Integrated Quantum Optics, Institute of Photonic Quantum Systems (PhoQS), Warburger Str. 100, 33098 Paderborn
In order to make quantum technology commercially usable, it must be integrated into the existing optical C-band fiber network. However, there are devices based on nitrogen vacancies in diamonds with an operating wavelength of 639 nm, which therefore require a frequency converter interface. Here, we demonstrate a SFG process in titanium indiffused diced ridge waveguides in periodically poled LiNbO3 for a conversion of 1550 nm and 1064 nm pump wavelengths to 630 nm. We performed simulations and mode field measurements to analyse the light guiding conditions of the waveguides and to find optimum fabrication parameters, since dicing of waveguides with a dicing saw is a new fabrication method in our group. We measure transmission losses below 0.8 dB/cm and a normalized SFG conversion efficiency of ηnorm = 7.4 %/W · cm2 at pump powers of a few milliwatts.