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Efficient anti-Stokes generation via intermodal stimulated Raman scattering in gas-filled hollow-core PCF

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Trabold,  B. M.
Russell Division, Max Planck Institute for the Science of Light, Max Planck Society;

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Abdolvand,  A.
Russell Division, Max Planck Institute for the Science of Light, Max Planck Society;

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Euser,  T. G.
Russell Division, Max Planck Institute for the Science of Light, Max Planck Society;

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Russell,  P. St J.
Russell Division, Max Planck Institute for the Science of Light, Max Planck Society;

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Citation

Trabold, B. M., Abdolvand, A., Euser, T. G., & Russell, P. S. J. (2013). Efficient anti-Stokes generation via intermodal stimulated Raman scattering in gas-filled hollow-core PCF. OPTICS EXPRESS, 21(24), 29711-29718. doi:10.1364/OE.21.029711.


Cite as: https://hdl.handle.net/11858/00-001M-0000-002D-66D9-B
Abstract
A strong anti-Stokes Raman signal, from the vibrational Q(1) transition of hydrogen, is generated in gas-filled hollow-core photonic crystal fiber. To be efficient, this process requires phase-matching, which is not automatically provided since the group velocity dispersion is typically non-zero and-inside a fiber-cannot be compensated for using a crossedbeam geometry. Phase-matching can however be arranged by exploiting the different dispersion profiles of higher-order modes. We demonstrate the generation of first and second anti-Stokes signals in higher-order modes by pumping with an appropriate mixture of fundamental and a higher-order modes, synthesized using a spatial light modulator. Conversion efficiencies as high as 5.3% are achieved from the pump to the first anti-Stokes band. (C) 2013 Optical Society of America