Abstract
We demonstrate sum-frequency generation between a telecom wavelength and the Rb D2 line, achieved through natural phase matching in a nonlinear whispering gallery mode resonator. Due to the strong optical field confinement and ultra high Q of the cavity, the process saturates already at sub-mW pump peak power, at least two orders of magnitude lower than in existing waveguide-based devices. The experimental data are in agreement with the nonlinear dynamics and phase matching theory based on spherical geometry. Our experimental and theoretical results point toward a new platform for manipulating the color and quantum states of light waves for applications such as atomic memory based quantum networking and logic operations with optical signals.
Original language | English (US) |
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Article number | 053025 |
Journal | New Journal of Physics |
Volume | 16 |
DOIs | |
State | Published - May 2014 |
Keywords
- nonlinear optics
- sum-frequency generation
- whispering-gallerymode resonators
ASJC Scopus subject areas
- General Physics and Astronomy