Dither-free absolute frequency locking of a 1.3 mu m DFB laser on /sup 87/Rb

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

doi:10.1109/68.127202

Cited by 19 publications

(16 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We send part of the frequency modulated light employed on this lock to an independent rubidium glass cell, where this light overlaps with a small laser beam taken from the probe beam. We monitor the absorption of the 780 nm light as a function of the frequency of the 776 nm laser, and the intermodulation of the sidebands yields error-signal like features that we use to lock the frequency of the probe beam on resonance [18,19].…”

Section: Experimental Methods and Setupmentioning

confidence: 99%

Lifetime measurements of the5dstates of rubidium

2008

View full text Add to dashboard Cite

We present lifetime measurements of the 5D 3/2 and 5D 5/2 states of rubidium using the time correlated single photon counting method. We perform the experiment in a magneto-optical trap of 87 Rb atoms using a two-step excitation with the trap laser at 780 nm as the first step. We record the 761.9 nm fluorescence from the decay of the 5D 3/2 state to the 5P 1/2 state, and measure the lifetime of the 5D 3/2 state τ = 246.3(1.6) ns. We record the 420.2 nm fluorescence from the cascade decay of the 5D 5/2 state to the 5S 1/2 state through the 6P 3/2 state, and extract the lifetime of the 5D 5/2 state τ = 238.5(2.3) ns.

show abstract

Section: Experimental Methods and Setupmentioning

confidence: 99%

Lifetime measurements of the5dstates of rubidium

2008

View full text Add to dashboard Cite

show abstract

“…8. If we modulate the pump laser for frequency-locking, the velocity group of atoms being pumped is also modulated; the 1529 nm resonance is then slightly frequency-modulated, so the DFB laser can be locked without dithering its frequency [16,13]. Moreover, the modulation excursion is not the same in each case.…”

Section: Methodsmentioning

confidence: 99%

“…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

View full text Add to dashboard Cite

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.

show abstract

“…6, which has the same parameters as curve (a)]. Equation (2) indicates that the two-photon Doppler-free condition requires the probe and coupling beams to counter-propagate, then the small term (ω P − ω C )v/c can be approximately neglected. But for the CP configuration, the term (ω P + ω C )v/c cannot be ignored.…”

Section: A Effect Of Eit On Drop Spectrummentioning

confidence: 99%

“…The spectra between the excited states with the natural characteristic of being Doppler-free due to the velocity-selective mechanism have been used in high-resolution spectroscopy, laser frequency stabilization, frequency references in optical communication, and precision measurement [1][2][3][4]. The excited spectra can be usually acquired by the optical-optical double resonance (OODR) technique, but sometimes they have low signal-tonoise ratios (SNRs) [5].…”

Section: Introductionmentioning

confidence: 99%

Narrow-linewidth double-resonance optical pumping spectrum due to electromagnetically induced transparency in ladder-type inhomogeneously broadened media

Yang

Liang

et al. 2010

Phys. Rev. A

View full text Add to dashboard Cite

Based on the cesium 6S 1/2 -6P 3/2 -8S 1/2 ladder-type atomic system, double-resonance optical pumping (DROP) spectra including electromagnetically induced transparency (EIT) effects have been investigated with a roomtemperature cesium vapor cell. For both cases of the probe and the coupling laser beams passing through the cesium vapor cell with the counter-propagation (CTP) and co-propagation (CP) configurations, the DROP spectra measured in the experiment display explicitly different linewidths. Thanks to the EIT effect, the linewidth of the DROP spectrum is explicitly narrower for the CTP configuration than for the CP configuration. Experimental results agree with the theoretical analysis considering Doppler averaging. Furthermore, when the coupling laser has moderate power, the DROP spectrum for the CTP configuration clearly shows two components: the narrow part due to the EIT effect and the broad part caused by optical pumping (but these two different components are never seen in the CP configuration). Also, the effect of the intensity of the coupling and probe lasers on the DROP spectra is investigated.

show abstract

Dither-free absolute frequency locking of a 1.3 mu m DFB laser on /sup 87/Rb

Cited by 19 publications

References 9 publications

Lifetime measurements of the5dstates of rubidium

Lifetime measurements of the5dstates of rubidium

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

Narrow-linewidth double-resonance optical pumping spectrum due to electromagnetically induced transparency in ladder-type inhomogeneously broadened media

Contact Info

Product

Resources

About

Dither-free absolute frequency locking of a 1.3 mu m DFB laser on /sup 87/Rb

Cited by 19 publications

References 9 publications

Lifetime measurements of the5dstates of rubidium

Lifetime measurements of the5dstates of rubidium

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

Narrow-linewidth double-resonance optical pumping spectrum due to electromagnetically induced transparency in ladder-type inhomogeneously broadened media

Contact Info

Product

Resources

About

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