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Journal Article

Weak-signal conversion from 1550nm to 532nm with 84% efficiency

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Samblowski,  Aiko
Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

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Schnabel,  Roman
Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

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1310.0712.pdf
(Preprint), 295KB

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Citation

Samblowski, A., Vollmer, C. E., Baune, C., Fiurasek, J., & Schnabel, R. (2014). Weak-signal conversion from 1550nm to 532nm with 84% efficiency. Optics Letters, 39(10), 2979-2981. doi:10.1364/OL.39.002979.


Cite as: http://hdl.handle.net/11858/00-001M-0000-001A-0E99-F
Abstract
We report on the experimental frequency conversion of a dim, coherent continuous-wave light field from 1550nm to 532nm with an external photon-number conversion efficiency of (84.4 +/- 1.5)%. We used sum-frequency generation, which was realized in a standing-wave cavity built around a periodically poled type I potassium titanyl phosphate (PPKTP) crystal, pumped by an intense field at 810 nm. Our result is in full agreement with a numerical model. For optimized cavity coupler reflectivities it predicts a conversion efficiency of up to 93% using the same PPKTP crystal.