Polarization spectroscopy and magnetically-induced dichroism of the potassium D_2 lines

K. Pahwa; L. Mudarikwa; J. Goldwin

doi:10.1364/OE.20.017456

Polarization spectroscopy and magnetically-induced dichroism of the potassium D_2 lines

K. Pahwa, L. Mudarikwa, J. Goldwin

Physics and Astronomy

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Abstract

We study modulation-free methods for producing sub-Doppler, dispersive line shapes for laser stabilization near the potassium D2 transitions at 767 nm. Polarization spectroscopy is performed and a comparison is made between the use of a mirror or beam splitter for aligning the counter-propagating pump and probe beams. Conventional magnetically-induced dichroism is found to suffer from a small dispersion and large background offset. We therefore introduce a modified scheme, using two spatially separated pump-probe beam pairs. Finally we compare our results to methods using phase modulation and heterodyne detection.

Original language	English
Pages (from-to)	17456
Journal	Optics Express
Volume	20
Issue number	16
DOIs	https://doi.org/10.1364/OE.20.017456
Publication status	Published - 30 Jul 2012

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10.1364/OE.20.017456

Mudarikwa_2012_Optics Express
Checked for eligibility: 30/07/2014. This paper was published in the above journal and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: [see above]. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.
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Cite this

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title = "Polarization spectroscopy and magnetically-induced dichroism of the potassium D_2 lines",

abstract = "We study modulation-free methods for producing sub-Doppler, dispersive line shapes for laser stabilization near the potassium D2 transitions at 767 nm. Polarization spectroscopy is performed and a comparison is made between the use of a mirror or beam splitter for aligning the counter-propagating pump and probe beams. Conventional magnetically-induced dichroism is found to suffer from a small dispersion and large background offset. We therefore introduce a modified scheme, using two spatially separated pump-probe beam pairs. Finally we compare our results to methods using phase modulation and heterodyne detection.",

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AU - Goldwin, J.

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AB - We study modulation-free methods for producing sub-Doppler, dispersive line shapes for laser stabilization near the potassium D2 transitions at 767 nm. Polarization spectroscopy is performed and a comparison is made between the use of a mirror or beam splitter for aligning the counter-propagating pump and probe beams. Conventional magnetically-induced dichroism is found to suffer from a small dispersion and large background offset. We therefore introduce a modified scheme, using two spatially separated pump-probe beam pairs. Finally we compare our results to methods using phase modulation and heterodyne detection.

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JO - Optics Express

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Polarization spectroscopy and magnetically-induced dichroism of the potassium D_2 lines

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