Frequency locking of a 1324 nm DFB laser to an optically pumped rubidium vapor

Breton, M.; Cyr, N.; Tremblay, Pierre; Têtu, M.; Boucher, R.

doi:10.1109/19.278541

Cited by 23 publications

(10 citation statements)

References 9 publications

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“…Spectroscopy of excited state transitions is of growing interest for a variety of applications including the search for stable frequency references [1,2], state lifetime measurement [3], optical filtering [4], frequency up-conversion [5], multiphoton laser cooling [6], as well as Rydberg gases [7,8] and their application to electro-optics [9][10][11] and nonlinear optics [12]. Twophoton excited state spectroscopy can be achieved without significant transfer of population out of the ground state using electromagnetically induced transparency (EIT) [13] in the ladder configuration [14].…”

Section: Introductionmentioning

confidence: 99%

Subnatural linewidths in two-photon excited-state spectroscopy

et al. 2012

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Publisher's copyright statement:Additional information: Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-pro t purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. We investigate, theoretically and experimentally, absorption on an excited-state atomic transition in a thermal vapor where the lower state is coherently pumped. We find that the transition linewidth can be subnatural, that is, less than the combined linewidth of the lower and upper state. For the specific case of the 6P 3/2 → 7S 1/2 transition in room temperature cesium vapor, we measure a minimum linewidth of 6.6 MHz compared with the natural width of 8.5 MHz. Using perturbation techniques, an expression for the complex susceptibility is obtained which provides excellent agreement with the measured spectra.

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Section: Introductionmentioning

confidence: 99%

Subnatural linewidths in two-photon excited-state spectroscopy

et al. 2012

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“…On the same figure, we see that if the rubidium atoms are pumped at 795.0 nm (D1 line at 377.1 THz) to the state 5P112, there is a transition allowed toward the state 6S112 at 1323.9 nm (226.45 THz). We already locked a DFB laser in such a way [13,14].…”

Section: Hyperfine Structure Of the 87rb Involved Levelsmentioning

confidence: 99%

Observation and characterization of⁸⁷Rb resonances for frequency-locking purpose of a 1.53-μm DFB laser

et al. 1993

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We report the progress of our work on the observation and the characterization of 87Rb vapor resonances in order to frequency-lock a 1529 nm DFB semiconductor laser. We present energy levels diagrams corresponding to the 5P312 -4D512 and 4D312 transitions of rubidium atoms, respectively at 1529.4 and 1529.3 nm (196.02 and 196.04 THz). Basic emission characteristics of our DFB laser are also given. We then show the absorption profiles of a probe laser emitting around 1529 nm while the 871tb vapor is optically pumped at 780.2 nm (D2 line at 384.2 THz) using a 30 mW A1GaAs laser. We finally present, for this experiment, the dependence of the probe laser absorption resonance depth and linewidth on the pump power.

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“…Stimulated two-photon transition can be used to measure spectral features at sub-Doppler resolution, without the need for cooling or molecular jets [4]. The inherent subDoppler resolution has been utilized, for example, in probing minute spectral features, such as hyperfine transitions and Zeeman splitting [5,6], and in laser stabilization [7]. For typical laser sources, the measurement resolution may become limited by the linewidths of the exciting lasers.…”

Section: Introductionmentioning

confidence: 99%

Frequency comb assisted two-photon vibrational spectroscopy

et al. 2017

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We report a setup for high-resolution two-photon spectroscopy using a mid-infrared continuous wave optical parametric oscillator (CW-OPO) and a near-infrared diode laser as the excitation sources, both of which are locked to fully stabilized optical frequency combs. The diode laser is directly locked to a commercial near-infrared optical frequency comb using an optical phaselocked loop. The near-infrared frequency comb is also used to synchronously pump a degenerate femtosecond optical parametric oscillator to produce a fully stabilized mid-infrared frequency comb. The beat frequency between the mid-infrared comb and the CW-OPO is then stabilized through frequency locking. We used the setup to measure a double resonant twophoton transition to a symmetric vibrational state of acetylene with a sub-Doppler resolution and high signal-to-noise ratio.© 2017 Optical Society of America. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modifications of the content of this paper are prohibited. Bartalini, and P. De Natale, "Subkilohertz linewidth room-temperature mid-infrared quantum cascade laser using a molecular sub-Doppler reference," Opt. Lett. 37(23), 4811-4813 (2012). 9.

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Frequency locking of a 1324 nm DFB laser to an optically pumped rubidium vapor

Cited by 23 publications

References 9 publications

Subnatural linewidths in two-photon excited-state spectroscopy

Subnatural linewidths in two-photon excited-state spectroscopy

Observation and characterization of⁸⁷Rb resonances for frequency-locking purpose of a 1.53-μm DFB laser

Frequency comb assisted two-photon vibrational spectroscopy

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Frequency locking of a 1324 nm DFB laser to an optically pumped rubidium vapor

Cited by 23 publications

References 9 publications

Subnatural linewidths in two-photon excited-state spectroscopy

Subnatural linewidths in two-photon excited-state spectroscopy

Observation and characterization of87Rb resonances for frequency-locking purpose of a 1.53-μm DFB laser

Frequency comb assisted two-photon vibrational spectroscopy

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Product

Resources

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Observation and characterization of⁸⁷Rb resonances for frequency-locking purpose of a 1.53-μm DFB laser