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Sub-kHz lasing of a CaF2 whispering gallery mode resonator stabilized fiber ring laser

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Collodo,  M. C.
Whispering Gallery Mode Resonator, Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society;

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Sedlmeir,  F.
Whispering Gallery Mode Resonator, Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society;

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Sprenger,  B.
International Max Planck Research School, Max Planck Institute for the Science of Light, Max Planck Society;
Max Planck Fellow Group, Max Planck Institute for the Science of Light, Max Planck Society;

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Svitlov,  S.
Max Planck Fellow Group, Max Planck Institute for the Science of Light, Max Planck Society;

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Schwefel,  H. G. L.
Whispering Gallery Mode Resonator, Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society;

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Citation

Collodo, M. C., Sedlmeir, F., Sprenger, B., Svitlov, S., Wang, L. J., & Schwefel, H. G. L. (2014). Sub-kHz lasing of a CaF2 whispering gallery mode resonator stabilized fiber ring laser. OPTICS EXPRESS, 22(16). doi:10.1364/OE.22.01914119277.


Cite as: http://hdl.handle.net/11858/00-001M-0000-002D-65C5-0
Abstract
We utilize a high quality calcium fluoride whispering-gallery-mode resonator to passively stabilize a simple erbium doped fiber ring laser with an emission frequency of 196 THz (wavelength 1530 nm) to an instantaneous linewidth below 650 Hz. This corresponds to a relative stability of 3.3 x 10(-12) over 16 mu s. In order to characterize the linewidth we use two identical self-built lasers and a commercial laser to determine the individual lasing linewidth via the three-cornered-hat method. We further show that the lasers are finely tunable throughout the erbium gain region. (C) 2014 Optical Society of America