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Journal Article

CaF2 whispering-gallery-mode-resonator stabilized-narrow-linewidth laser

MPS-Authors
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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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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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Lu,  Z. H.
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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Wang,  L. J.
Max Planck Fellow Group, Max Planck Institute for the Science of Light, Max Planck Society;

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Citation

Sprenger, B., Schwefel, H. G. L., Lu, Z. H., Svitlov, S., & Wang, L. J. (2010). CaF2 whispering-gallery-mode-resonator stabilized-narrow-linewidth laser. OPTICS LETTERS, 35(17), 2870-2872.


Cite as: https://hdl.handle.net/11858/00-001M-0000-002D-6AB9-6
Abstract
A fiber laser is stabilized by introducing a calcium fluoride (CaF2) whispering-gallery-mode resonator as a filtering element in a ring cavity. It is set up using a semiconductor optical amplifier as a gain medium. The resonator is critically coupled through prisms, and used as a filtering element to suppress the laser linewidth. A three-cornered-hat method is used and shows a stability of 10(-11) after 10 mu s. Using the self-heterodyne beat technique, the linewidth is determined to be 13 kHz. This implies an enhancement factor of 10(3) with respect to the passive cavity linewidth. (C) 2010 Optical Society of America