An ultrahigh-<i>Q</i> isotropically sensitive optical filter employing atomic resonance transitions

Marling, J.B.; Nilsen, Joseph; West, Lawrence C.; Wood, Lowell

doi:10.1063/1.326074

Cited by 49 publications

(4 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Several elements have been studied for use as atomic line filters, such as the alkali metals, 4,5 alkaline earths, 6,7 and thallium. 8 As previously recognized by Liu et al, 8 thallium is especially attractive since the 535.046 nm metastable transition overlaps with the second harmonic output of a Nd:La 2 Be 2 O 5 (BEL) laser (1070 nm).…”

Section: Introductionmentioning

confidence: 99%

Lifetime Measurements of Several S, P, and D States of Thallium in a Glow Discharge by Single-Step and Two-Step Laser-Excited Fluorescence

et al. 2008

View full text Add to dashboard Cite

The lifetimes of several states in a thallium see-through hollow cathode discharge, or galvatron, are obtained to characterize its potential as an atomic line filter. The lifetimes of the thallium 6(2)D(3/2), 6(2)D(5/2), and 7(2)S(1/2) states are measured by time-resolved single-step laser-excited fluorescence by use of a 276.787 nm laser pulse or a 535.046 nm laser pulse and measuring the resulting fluorescence waveform at the appropriate wavelength. Values of 6.4 +/- 0.1, 7.5 +/- 1.1, and 7.7 +/- 0.2 ns were obtained for the 6(2)D(3/2), 6(2)D(5/2), and 7(2)S(1/2) states, respectively, which agree with values obtained by previous authors, as well as calculated values. No current dependence was observed for each of these states. The lifetime of the long-lived thallium 6(2)P(3/2) degrees metastable state was measured by two-step laser-excited fluorescence at various applied currents. The metastable level was pumped by a 276.787 nm laser pulse, and a temporally delayed 535.046 nm laser pulse interrogated the population of the metastable state. Relating the fluorescence intensity to the population of the metastable state as a function of delay time yielded a decay curve for the 6(2)P(3/2) degrees metastable state. Values of 2.1 +/- 0.2, 2.8 +/- 0.1, 3.1 +/- 0.3, 3.8 +/- 0.4, and 4.8 +/- 0.6 micros were found for applied currents of 14.0, 12.0, 10.0, 8.0, and 6.0 mA, respectively. The resulting lifetimes for the 6(2)P(3/2) degrees metastable state clearly show a dependence on the applied current and are expected to be due to collisions with the wall of the cathode, as well as a contribution due to collisions with electrons.

show abstract

Section: Introductionmentioning

confidence: 99%

Lifetime Measurements of Several S, P, and D States of Thallium in a Glow Discharge by Single-Step and Two-Step Laser-Excited Fluorescence

et al. 2008

View full text Add to dashboard Cite

show abstract

“…Background light shifts can be reduced with optical bandpass filters centered at the magic wavelength. Various techniques have achieved passbands with <1 nm bandwidth, including complex prism geometries [33], atomic vapor filters [34], and various types of reflection gratings [35,36] (potentially in conjunction with Fabry-Perot etalons [37]). Due to their relative simplicity and compact size, we have chosen a volume Bragg grating.…”

Section: Spectral Filteringmentioning

confidence: 99%

Characterization and suppression of background light shifts in an optical lattice clock

Fasano

Chen

McGrew

et al. 2021

Preprint

View full text Add to dashboard Cite

Experiments involving optical traps often require careful control of the ac Stark shifts induced by strong confining light fields. By carefully balancing light shifts between two atomic states of interest, optical traps at the magic wavelength have been especially effective at suppressing deleterious effects stemming from such shifts. Highlighting the power of this technique, optical clocks today exploit Lamb-Dicke confinement in magic-wavelength optical traps, in some cases realizing shift cancellation at the ten parts per billion level. Theory and empirical measurements can be used at varying levels of precision to determine the magic wavelength where shift cancellation occurs. However, lasers exhibit background spectra from amplified spontaneous emission or other lasing modes which can easily contaminate measurement of the magic wavelength and its reproducibility in other experiments or conditions. Indeed, residual light shifts from laser background have plagued optical lattice clock measurements for years. In this work, we develop a simple theoretical model allowing prediction of light shifts from measured background spectra. We demonstrate good agreement between this model and measurements of the background light shift from an amplified diode laser in an Yb optical lattice clock. Additionally, we model and experimentally characterize the filtering effect of a volume Bragg grating bandpass filter, demonstrating that application of the filter can reduce background light shifts from amplified spontaneous emission well below the 10 −18 fractional clock frequency level. This demonstration is corroborated by direct clock comparisons between a filtered amplified diode laser and a filtered titanium:sapphire laser.

show abstract

“…буферного газа при достаточно высоких концентрациях атомов цезия (> 2 · 10 14 cm −3 ) достигает 95% [1]. При добавлении в рабочие кюветы буферного газа в спек-тре флуоресценции появляются дополнительные фотоны других длин волны, и квантовая эффективность может существенно (на десятки процентов) превышать 100%.…”

Section: рисunclassified

“…В работе [1] впервые было проведено исследова-ние основных параметров флуоресцентных фильтров на парах атомов щелочных металлов без буферного газа. В дальнейшем были выполнены работы [2,3] по исследованию флуоресцентных фильтров на парах ато-мов цезия в присутствии благородных буферных газов.…”

Section: Introductionunclassified

Экспериментальное Исследование Спектра Флуоресценции Атомов Цезия В Присутствии Буферного Газа

Давыдов¹,

Кулясов²

2018

Журнал Технической Физики

View full text Add to dashboard Cite

An ultrahigh-Q isotropically sensitive optical filter employing atomic resonance transitions

Cited by 49 publications

References 3 publications

Lifetime Measurements of Several S, P, and D States of Thallium in a Glow Discharge by Single-Step and Two-Step Laser-Excited Fluorescence

Lifetime Measurements of Several S, P, and D States of Thallium in a Glow Discharge by Single-Step and Two-Step Laser-Excited Fluorescence

Characterization and suppression of background light shifts in an optical lattice clock

Экспериментальное Исследование Спектра Флуоресценции Атомов Цезия В Присутствии Буферного Газа

Contact Info

Product

Resources

About