Laser frequency stabilization using Doppler-free bi-polarization spectroscopy

Tiwari, V. B.; Singh, Sunita; Mishra, S. R.; Rawat, H. S.; Mehendale, S. C.

doi:10.1016/j.optcom.2006.01.028

Cited by 38 publications

(27 citation statements)

References 11 publications

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“…In this sense, our modified MD signal appears to be superior to PS, giving a ∼ 2× greater slope. However, after preparing this manuscript, we became aware of a type of polarization spectroscopy using a split-beam configuration similar to that used in our MD experiments [21]. Such a modification might also increase the slope of our PS signal.…”

Section: Discussionmentioning

confidence: 99%

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

Pahwa¹,

Mudarikwa²,

Goldwin³

2012

Opt. Express

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Abstract:We study modulation-free methods for producing sub-Doppler, dispersive line shapes for laser stabilization near the potassium D 2 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 magneticallyinduced 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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Section: Discussionmentioning

confidence: 99%

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

Pahwa¹,

Mudarikwa²,

Goldwin³

2012

Opt. Express

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“…For a high precision spectroscopy a laser frequency stabilization is very important because it fluctuates due to unstable driving current temperature variation, mechanical vibrations and so on. There are various methods to stabilize a laser frequency, such as, using an atomic absorption line as an absolute frequency reference [7][8][9][10], judging a relative frequency of a laser by an etalon [11,12], detecting a phase difference between a reference and a control laser by mixing [13,14], transferring a stability of reference laser to the other lasers through an etalon [15,16].…”

Section: Introductionmentioning

confidence: 99%

Development of multiple laser frequency control system for Ca+ isotope ion cooling

2015

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We here developed and evaluated a laser frequency control system which synchronizes the laser frequency to the resonance of target Ca + isotope ion whose having more than 8 GHz of isotope shift based on the Fringe Offset Lock method for simple operation of ICPMS-ILECS (Inductively Coupled Plasma Mass Spectrometry -Ion trap Laser Cooling Spectroscopy) The system fulfilled the minimum requirements of four slave lasers stability for Doppler cooling of Ca + ions. A performance of the system was evaluated by cooling 40 Ca + ions with the stabilized slave lasers. All the stable even Ca + isotope ions were trapped and their fluorescence was observed by switching laser frequencies using the system. An odd calcium isotope 43 Ca + cooling was also succeeded by the control system.

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“…The development of models for describing the shape of the spectra obtained by means of the interaction between laser light and alkali atom vapors is motivated by the need of predicting both Doppler broadened and sub-Doppler spectra with high accuracy [1][2][3][4][5]. This understanding can be applied to the improvement and development of new laser stabilization techniques [6][7][8][9], laser cooling and trapping systems, chip-scale atomic clocks [10], magnetometry and inertial sensing systems [11,12], spectroscopic measurements of atomic energy levels [13], as well as in electromagnetically induced transparency (EIT) experiments [14].…”

Section: Introductionmentioning

confidence: 99%

“…Similarly, Hombo et al [22] recently reported the observation of electromagnetically induced polarization rotation in a Na vapor. Another application of the pump-probe techniques is the balanced bipolarimeter reported in [7,8], which produces a background-free dispersion signal ideal for laser frequency locking.…”

Section: Introductionmentioning

confidence: 99%

Probe-intensity dependence of velocity-selective polarization spectra at the rubidiumD2manifold and comparison with a rate-equation calculation

et al. 2014

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We present a detailed study of the effect of a strong and circularly polarized coupling beam on a probe beam locked to a hyperfine transition of the rubidium D 2 manifold. Experiments were carried out in the co-and counterpropagating configurations. Counterpropagating beams are used to study the effect of the probe beam intensity on absorption and polarization spectra. These data are compared with results of a rate-equation calculation. The absorption spectra show very clear indication of saturation, with different saturation intensities for each atomic line. The slope of the dispersionlike profile of the polarization signal increases with the intensity of the probe beam. These results are in very good agreement with the calculation. Experimental absorption and polarization spectra in the copropagating configuration are also well reproduced by the rate-equation calculation. The dispersion profiles in the polarization signal can be used to lock the coupling laser frequency at well defined frequencies.

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Laser frequency stabilization using Doppler-free bi-polarization spectroscopy

Cited by 38 publications

References 11 publications

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

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

Development of multiple laser frequency control system for Ca+ isotope ion cooling

Probe-intensity dependence of velocity-selective polarization spectra at the rubidiumD2manifold and comparison with a rate-equation calculation

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