Atomic frequency offset locking in a Λ type three-level Doppler broadened Cs system

Kale, Y. B.; Ray, Ayan; D’Souza, Richard; Lawande, Q. V.; Jagatap, B. N.

doi:10.1007/s00340-010-3944-7

Cited by 15 publications

(26 citation statements)

References 24 publications

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“…This is because in VS-BPS scheme, the probe laser is locked with a signal of larger slope than the slope of SAS signal for locking the control laser. An observation similar to this is reported earlier also where a probe locked with norrower EIT signal (with larger slope) showed better stability than the SAS locked pump laser [20]. We also note here that the experimental setup was not put under any enclosure to reduce the ambient temperature fluctuations in the laboratory.…”

Section: (B) Dependence Of Vs-bps Signal On Rf and Control Laser Powerssupporting

confidence: 87%

“…cooling laser for MOT). The techniques that can provide further steeper slope include EIT resonances [19] and generation of odd-derivatives of the signal using lock-in amplifier [20], can also be a substitite to BPS in our proposed scheme.…”

Section: (B) Dependence Of Vs-bps Signal On Rf and Control Laser Powersmentioning

confidence: 99%

“…The spectroscopic techniques those can provide the narrow spectral feature in their signals include PS spectroscopy, Autler-Townes (AT) splitting [18], Electromagnetically Induced Transparancy (EIT) [19] and generation of odd-derivatives of the signal using lock-in amplifier [20]. The signals obtained with these techniques are more suitable for frequency locking due to higher stability of the lock arising from the higher slope of the locking signal.…”

Section: Introductionmentioning

confidence: 99%

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Velocity selective bipolarization spectroscopy for laser cooling of metastable krypton atoms

et al. 2014

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We report a velocity selective bi-polarization spectroscopy (VS-BPS) technique to generate a background-free, dispersion-like reference signal which is tunable over a wide range of frequency. In this technique, a pair of linearly polarized weak probe beams passing through a gas cell of metastable Krypton (Kr*) atoms, overlaps with a pair of counter-propagating circularly polarized strong pump beams derived from an independently tunable control laser. The polarization spectroscopy signals from the two probe beams, after subtraction, result in VS-BPS signal. The spectral shifting in VS-BPS signal can be achieved by tuning the frequency of the control laser. The dependence of the amplitude and slope of the VS-BPS signal on the RF power used for excitation of Kr atoms in the gas cell and on the power of pump beams has been studied. The frequency stability of a diode laser locked with VS-BPS signal has been found to be better than the frequency stability of the laser locked with a saturated absorption spectroscopy (SAS) signal. The VS-BPS signal is finally used for stabilization and tuning of the cooling laser frequency for a magneto-optical trap (MOT) for Kr* atoms.

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Section: (B) Dependence Of Vs-bps Signal On Rf and Control Laser Powerssupporting

confidence: 87%

Section: (B) Dependence Of Vs-bps Signal On Rf and Control Laser Powersmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Velocity selective bipolarization spectroscopy for laser cooling of metastable krypton atoms

et al. 2014

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“…Ultra-narrow EIT signals have been obtained in paraffin coated vapor cells by reducing the ground state decoherences [15]. The narrow EIT spectra have expanded their horizon in various fields like slow light propagation [16], quantum storage [17], ultrasensitive magnetometery [18] and atomic frequency offset locking [19]. The atomic coherences generated by EIT also play crucial role in nonlinear optics [20] and quantum memory [21].…”

Section: Introductionmentioning

confidence: 99%

Resolution of hyperfine transitions in metastableKr83using electromagnetically induced transparency

et al. 2015

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“…With the narrow transparency window in the EIT, it has been used as a frequency reference to stabilize the laser frequency. Since this idea was first demonstrated in [1], many studies have been done to construct the frequency reference via the EIT signal [2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Cavity linewidth narrowing by optical pumping-assisted electromagnetically induced transparency in V-type rubidium at room temperature

Kang

Niu

Chen

et al. 2014

Journal of Modern Optics

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Abstract:A tunable high resolution frequency reference is constructed using the narrowed cavity-linewidth by the optical pumping-assisted V-type electromagnetically induced transparency (EIT). At room temperature, the optical pumping effect will increase the transparency for the V-type EIT and therefore the cavity-linewidth can be narrowed apparently. For the seven EITs observed in our previous study, cavity-linewidth narrowing is observed in all of them. More importantly, we find that the cavity-linewidth can keep at 1.2MHz in a wide frequency range of 100MHz by utilizing the central EIT. This property provides a novel way for constructing high resolution tunable frequency reference via the intracavity EIT.

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Atomic frequency offset locking in a Λ type three-level Doppler broadened Cs system

Cited by 15 publications

References 24 publications

Velocity selective bipolarization spectroscopy for laser cooling of metastable krypton atoms

Velocity selective bipolarization spectroscopy for laser cooling of metastable krypton atoms

Resolution of hyperfine transitions in metastableKr83using electromagnetically induced transparency

Cavity linewidth narrowing by optical pumping-assisted electromagnetically induced transparency in V-type rubidium at room temperature

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