Fiber-coupled balanced optical cross-correlator using PPKTP waveguides

Callahan, Patrick T.; Şafak, Kemal; Battle, Philip; Roberts, Tony D.; Kärtner, Franz X.

doi:10.1364/OE.22.009749

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Fiber-coupled balanced optical cross-correlator using PPKTP waveguides

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Şafak, Kemal
International Max Planck Research School for Ultrafast Imaging & Structural Dynamics (IMPRS-UFAST), Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Center for Free Electron Laser Science, Deutsches Elektronen-Synchrotron, Luruper Chaussee 149, Hamburg 22761, Germany ;
Department of Physics, University of Hamburg, Notkestraße 85, Hamburg 22607, Germany;

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http://dx.doi.org/10.1364/OE.22.009749
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Citation

Callahan, P. T., Şafak, K., Battle, P., Roberts, T. D., & Kärtner, F. X. (2014). Fiber-coupled balanced optical cross-correlator using PPKTP waveguides. Optics Express, 22(8), 9749-9758. doi:10.1364/OE.22.009749.

Cite as: https://hdl.handle.net/11858/00-001M-0000-002B-240C-1

Abstract

We present a fiber-coupled balanced optical cross-correlator using waveguides in periodically-poled KTiOPO₄ (PPKTP). The normalized conversion efficiency of the waveguide device is measured to be η₀ = 1.02% / [W·cm²], which agrees well with theory and simulation. This result represents an expected improvement of a factor of 20 over previous bulk-optic devices. The sensitivity of the cross-correlator is characterized and shown to be comparable to the free-space bulk-optic version, with the potential for significant performance enhancements in the future.