A portable rubidium-vapor frequency standard
Three portable optically-pumped rubidium-vapor. frequency standards have been constructed. Output frequencies of 5.,MHz and 100 kHz with a stability of better than 1:10 …
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Compact Quantum Frequency Standard Using A Rubidium Vapor …
The main advantage of frequency standards on a vapor cell with POP is determined by the fact that atoms complete the clock microwave transition in the absence of optical radiation in a cell, and this results in the essential suppression of the light shift. In addition, the technique of microwave excitation using the Ramsey scheme allows ...
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(PDF) Pulsed vapor cell frequency standard with differential …
vapor-cell clocks with optical detection," in Pr oceedings of IEEE Conference on the Eur opean Frequency and T ime Forum and IEEE International F requency Control Symposium, (IEEE, 2017), pp ...
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Rubidium Vapour-cell Frequency Standards
This thesis concerns the development, study, and optimisation of compact and high-performance frequency references based on rubidium (Rb) vapour cells1. More specially, two Rb vapour-cell frequency references are studied: an optical-frequency reference at 1.5 μm and a double-resonance pulsed optically pumped (POP) atomic clock. The use of …
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Study of pulsed optically pumped Rb frequency standard
This paper presents new results obtained with a laboratory prototype of a pulsed optically pumped frequency standard based on a vapor cell containing 87Rb diluted in a buffer gas. A ...
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[PDF] THEORETICAL AND EXPERIMENTAL STUDY CELL FREQUENCY STANDARD …
One of the important subjects in coherent-population-trapping-based (CPT-based) vapor cell frequency standards is the light shift (ac Stark shift. We calculate the light shift using a numerical method and perturbation approximation. Experimentally, we measure light shift using a pair of phase-locked diode lasers as well as a frequency-modulated diode laser. …
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High-performance, compact optical standard
We describe a high-performance, compact optical frequency standard based on a microfabricated Rb vapor cell and a low-noise, external cavity diode laser operating on the Rb two-photon transition at 778 nm.
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High performance vapour-cell frequency standards
High performance vapour-cell frequency standards. M Gharavipour, C Affolderbach, S Kang, T Bandi, F Gruet, M Pellaton and. G Mileti. Laboratoire Temps-Fréquence, Institut de Physique, Université ...
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Theoretical and Experimental Study of Light Shift in a CPT …
A method of controlling light shift in CPT-based frequency standards is proposed and implemented in Agilent Laboratories. The short-term stability of our CPT-based rubidium vapor cell frequency standard is measured as 1.3 x 10^-I2 T^-1/2, which is limited by the phase noise of the reference local oscillator used.
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Pulsed optically pumped $^{87}mat{Rb}
We present a multilevel theoretical approach to describe the behavior of a pulsed optically pumped (POP) $^{87}mat{Rb}$ frequency standard based on a …
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RELIABILITY STUDIES OF LAMP CELLS FOR USE IN RUBIDIUM VAPOR FREQUENCY …
Atomic vapor frequency standards, and in particular rubidium vapor frequency standards utilize electrode-less discharge lamps in order to measure the atomic hyperfine frequency. These lamps have been isolated as a reliability problem in commercially available frequency standards, and have been associated with failures of rubidium …
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High-performance, compact optical standard
frequency standard based on a microfabricated Rb vapor cell and a low-noise, external cavity diode laser operating on the Rb two-photon transition at 778nm. The optical …
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High-performing vapor-cell frequency standards
In the current scenario of atomic frequency standards, vapor-cell clocks are particularly suited to be employed in those activities that demand good frequency stability performances joined to compactness, reliability and low power consumption. Recently, due to better-performing laser sources and to innovative techniques to prepare and detect ...
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Optical frequency standard by using a 1560 nm diode laser …
A robust, compact, highly accurate rubidium optical frequency standard module was developed to overcome the delicate performance of conventional frequency stabilized lasers. A frequency doubled 1560 nm distributed feedback diode laser locked to a rubidium D2 saturated absorption line without using an optical amplifier was demonstrated, and …
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Theoretical and Experimental Study of Light Shift in a
The short-term stability of our CPT-based rubidium vapor cell frequency standard is measured as 1.3 x 10(-12) tau (-1/2), which is limited by the phase noise of the reference local oscillator used.
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Pulsed optically pumped Rb87 vapor cell frequency …
32.30.Bv; Level crossing and optical pumping; Time and frequency; Radio-frequency microwave and infrared spectra. We present a multilevel theoretical approach to describe …
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Frequency stability performance of a laser pumped rubidium vapor …
The AC Stark shift (the light shift) is very important in the performance of laser-pumped vapor cell atomic frequency standards. The frequency stability of a compact rubidium vapor cell atomic frequency standard with an AC Stark shift suppression laser pumping method was evaluated. The applications of such a device include serving as primary …
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GNSS-grade space atomic frequency standards: Current status …
Primary frequency standards directly interrogate the unperturbed Cesium ... Cs vapor-cell and commercial Cs hot beams (Microsemi, 2020). For many space and ground (Akiyama et al., 2019) applications, such AFSs with good long-term frequency stability are sufficient and accuracy of the frequency output is generally not required. ...
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Compact Quantum Frequency Standard Using A …
The main advantage of frequency standards on a vapor cell with POP is determined by the fact that atoms complete the clock microwave transition in the …
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Realization of a pulsed optically pumped Rb clock with a frequency …
The white frequency noise region extends up to (4times 10^4) s (drift removed), allowing to reach the value (6times 10^{-16}), a record result for a vapor-cell standard. The clock prototype ...
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Frequency Standards | Wiley Online Books
Of all measurement units, frequency is the one that may be determined with the highest degree of accuracy. It equally allows precise measurements of other physical and technical quantities, whenever they can be measured in terms of frequency. This volume covers the central methods and techniques relevant for frequency standards …
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The Quantum Physics of Atomic Frequency Standards: …
Yue Chang Jie Qin. Physics. Physical Review A. 2024. In atomic vapor cells, atoms collide with the inner surface, causing their spin to randomize on the walls. This wall-depolarizing effect is diffusive, and it becomes more pronounced in …
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THEORETICAL AND EXPERIMENTAL STUDY OF LIGHT …
CELL FREQUENCY STANDARD OF LIGHT SHIFT IN A CPT-BASED RB VAPOR M. Zhu and L. S. Cutler Agilent Laboratories 3500 Deer Creek Rd., Palo Alto, CA 94304, USA Abstract One of the important subjects in coherent-population-trapping-based (CPT-based) vapor cell frequency standards is the light shift (ac Stark shift. We calculate the light …
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High-performance, compact optical standard.
We describe a high-performance, compact optical frequency standard based on a microfabricated Rb vapor cell and a low-noise, external cavity diode laser operating on the Rb two-photon transition at 778 nm. The optical standard achieves an instability of 1.8×10-13τ-1/2 for times less than 100 s and a flicker noise floor of 1×10-14 out to 6000 s.
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Optical frequency standard by using a 1560 nm diode laser …
@article{osti_20929767, title = {Optical frequency standard by using a 1560 nm diode laser locked to saturated absorption lines of rubidium vapor}, author = {Masuda, Shin and Seki, Atsushi and Niki, Shoji}, abstractNote = {A robust, compact, highly accurate rubidium optical frequency standard module was developed to overcome the delicate …
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High performance vapour-cell frequency standards
Reference Standards. Article PDF Available. High performance vapour-cell frequency standards. June 2016. Journal of Physics Conference Series 723 (1):012006. DOI:...
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Optical Quantum Technologies for Compact Rubidium Vapor-cell Frequency
Frequency standards based on the two-photon transition of Rb benefit from high component technology readiness level, allow for vapor cell micro-integration and physics package miniaturization, and ...
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A portable rubidium-vapor frequency standard
Three portable optically-pumped rubidium-vapor. frequency standards have been constructed. Output frequencies of 5.,MHz and 100 kHz with a stability of better than 1:10 have been realized. The weight without power supply is IS kg and the power required, exclusive of temperature control, is about 11 watts.
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Efforts towards a low-temperature-sensitive physics package for vapor
Some vapor cell clocks require a microwave cavity to select the resonant mode of the microwave field. A standard cylindrical microwave cavity with TE 011 mode is employed in a POP Rb clock (Godone et al. 2011), which has a typical volume of 100 mL.For such a cavity, the vapor cell is held in the core of the cylindrical cavity by long …
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A Wide-Frequency-Tuning Micro-Loop-Gap Resonator for …
Abstract: To miniaturize the double-resonance (DR) rubidium (Rb) vapor-cell atomic clocks, a new type of micro-loop-gap microwave resonator ( $mu $ -LGR) is proposed for TE011-like mode where the magnetic field inside the cavity is homogeneous and oriented along its longitudinal axis over a large volume.It provides more design …
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