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(PDF) Pre-excitation studies for rubidium-plasma ...

Photoassociation and coherent transient dynamics in the interaction of ultracold rubidium atoms with shaped femtosecond pulses. I. Experiment. By Magnus Albert. Creation of a coherent superposition of quantum states by a single frequency-chirped short laser pulse. By …

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A Comparison of Frequency Calibration Techniques for High ...

1.A rubidium oscillator is monitored by a reference that can resolve 10ns. Over a one-hour time, the monitor can see changes as little as 2.7x10-13. 2. In contrast, another monitor can only resolve down to one microsecond. If the oscillator is monitored for an entire day, (000001/86,400 ) it can only resolve 1.1x10-11. Test Setup Types

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OCXO + Rubidium – QRb Sync

Wenzel Associates' is proud to offer the QRb Sync Series products which includes a low noise OCXO coupled with a very stable disciplined rubidium oscillator and combined within a small ruggedized housing. This combination offers exceptional phase noise performance as well as excellent stability. There are many options to choose from, depending on the application, …

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IQRB-1 Rubidium Oscillators - IQD | DigiKey

The IQD Frequency Products IQRB-1 high-performance rubidium oscillator offers stability around 1,000 times more accurate than a typical oven controlled crystal oscillator (OCXO). Based around an atomic clock, the IQRB-1 delivers an accuracy of ±0.05 ppb regardless of temperature fluctuations. The rubidium is housed in a 5-pin 51 mm square ...

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Rubidium Frequency Standard - FS725

The FS725 integrates a rubidium oscillator (SRS model PRS10), a low noise universal AC power supply, and distribution amplifiers in a compact half-width …

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Rubidium Frequency Oscillators | AccuBeat

AccuBeat produces a range of Rubidium Frequency Oscillators and Standards that includes the compact AR133 family and the Nano Atomic Clock - NAC1, that provide a stable time and frequency reference for a variety of applications such as mobile and wired telecommunication infrastructure, broadcasting products, defense applications, calibration equipment and …

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Precision Rubidium Oscillator - Amtest-TM

The Microsemi innovative rubidium atomic oscillator, the SA.22c, is the culmination of significant advances in physics miniaturization and integration. The SA.22c's compact form factor, low power consumption, and full-spectrum temperature operation make rubidium performance accessible to a wide range of synchronization applications,

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Accurate frequency references for the hobbyist - KO4BB

Rubidium Oscillator. Rubidium oscillators are very stable and precise frequency references. Unlike the GPSDO, they have to be calibrated once in a while, but they are significantly more stable than crystal oscillators, and they achieve their stable frequency output relatively rapidly after power up (typically around 10 minutes).

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FS725 Rubidium Frequency Standard - Stanford Research ...

The FS725 integrates a rubidium oscillator (SRS model PRS10), a low noise universal AC power supply, and distribution amplifiers in a compact half-width 2U chassis. It provides stable and reliable performance, with an estimated 20 year aging of less than 5 × 10-9 and a demonstrated rubidium oscillator MTBF of over 200,000 hours. The FS725 is ...

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Test Equipment Solutions Datasheet

The FS725 integrates a rubidium oscillator (SRS model PRS10), a low-noise AC power supply, and distribution amplifiers in a compact, half-width 2U chassis. It provides stable and reliable performance with an estimated 20 year aging of less than 5× 10–9, and a demonstrated rubidium oscillator MTBF of over 200,000 hours. The FS725 is an

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Design and use of a gradiometer connected rubidium ...

mixing the Rubidium Oscillator output with a signal from a crystal oscillator. The natural frequency of a Rubidium Oscillator, at this latitude, is about 220 kHz, so that a crystal oscillator frequency of 219 kHz is used. A block diagram of the apparatus si shown in figure 2. R.F. MIXER. - The radiofrequency (220 kHz)

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Time and Frequency: Measurements and Applications

Rubidium Oscillator Spec Sheet Cesium Oscillators Cesium oscillators are the primary standard for time and frequency measurements and the basis for atomic time, because the second is defined with respect to energy transitions of the cesium atom. ... 10-3 s microsecond ( s), 10-6 s nanosecond (ns), 10-9 s picosecond (ps), 10-12 s femtosecond (fs ...

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Atomic Clocks and Oscillators - Orolia

Low SWaP-C Mini-Rubidium Oscillator. The Spectratime mRO-50 is a breakthrough low SWaP-C Miniaturized Rubidium Oscillator designed to meet the latest commercial, military and aerospace requirements where time stability and power consumption are critical. It provides a one day holdover below 1µs and a retrace below 1 x 10-10 in a form factor ...

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KA7OEI - 10 MHz Rubidium Reference

Figure 2: Top Left: Inside the enclosure containing the 10 MHz Rubidium frequency reference. The Efratom LPRO-101 unit is partially visible in the background, mounted to the lid. The LM2577-12 19 volt up-converter can be seen soldered to the circuit board mounted to the wall of the box.

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Oscillators - an overview | ScienceDirect Topics

They operate at 6 834 682 608 Hz, the resonance frequency of the rubidium atom (87 Rb), and use the rubidium frequency to control the frequency of a quartz oscillator. A microwave signal derived from the crystal oscillator is applied to the 87 Rb vapor within a cell, forcing the atoms into a particular energy state.

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GPS10R/RB - 10 MHz, GPS Disciplined, Rubidium Frequency ...

The GPS10R/RB is normally operated with the Rubidium oscillator's 10 MHz output, locked to the GPS satellite system. In the event of a failure of the GPS signal for any reason, the GPS10R/RB will automatically switch over to free run mode. In this mode, the GPS10R/RB's Rubidium Oscillator still achieves Stratum 1 performance over a 72 hour period.

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Rubidium Keeps the Signal Stable - Microsemi

solution is the Rubidium Atomic Reference. A rubidium oscillator will pro-vide better short-term stability and fre-quency accuracy, which becomes impor-tant for signal integrity and co-channel interference. Phase noise, that relates to jitter in the digital world, is much better than a standard GPS receiver. Rubidium also offers a low aging rate of

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FS725 — Benchtop rubidium frequency standard - Stanford ...

Frequency Standards FS725 — Benchtop rubidium frequency standard FS725 Rubidium Frequency Standard · 10 MHz and 5 MHz outputs · 1 pps input and output for GPS synchronization · 20 year aging less than 0.005 ppm · Ultra-low phase noise (<−130 dBc/Hz at 10 Hz) · Built-in distribution amplifiers (up to 22 outputs) · RS-232 computer interface ...

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Oscillator Options for Meinberg Receivers - Rubidium, OCXO ...

Oscillator List. Due to space restrictions not all oscillators are supported for all form factors. The accuracy in Hertz is based on the standard frequency of 10 MHz. For example: Accuracy of TCXO (free run one day) is ±1·10 -7 ·10MHz = ± 1 HZ. The given values for the accuracy of frequency and time (not short term accuracy) are only valid ...

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PRS10 - Rubidium Frequency Standard

The PRS10 uses a microcontroller, clocked at 10 MHz, to control all aspects of operation and to allow diagnostics, measurement, and closed case calibration via an RS-232 interface.The processor sweeps the RF synthesizer, synchronously detects the optical signal from the physics package, and servos the 10 MHz crystal oscillator to the rubidium transition via a 22-bit DAC …

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rubidium frequency standard - instrumentcenter.eu

The FS725 integrates a rubidium oscillator, a low-noise AC power supply, and distribution amplifiers in a compact, half-width 2U chassis. It provides stable and reliable performance with an estimated 20 year aging of less than 5 ´ 10-9, and a demonstrated rubidium oscillator MTBF of over 200,000 hours.

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Allan deviation and Averaging - LeapSecond

A total of 60,000 time interval measurements were taken at a 1 second rate. That is, the time (aka phase) of the oscillator was compared against the time (aka phase) of a reference standard once a second for about 16 hours. The reference standard (active H-maser) is much more stable than the rubidium oscillator being tested.

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A Rubidium Oscillator - Suntsu Electronics

Designed to withstand long operating periods without requiring maintenance, introducing our highest performing Rubidium Oscillator. It boasts a low profile and standard connector interface to make for easy integration. Time …

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Frequency Standards

All commercial rubidium frequency standards operate by disciplining a crystal oscillator to the hyperfine transition at 6.834,682,612 GHz in rubidium. The amount of light from a rubidium discharge lamp that reaches a photodetector through a resonance cell will drop by about 0.1 % when the rubidium vapor in the resonance cell is exposed to ...

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Rubidium atom oscillator generating a stable frequency ...

A rubidium atom oscillator is not influenced by a circumference noise or the like, and is excellent in the short-term stability and the phase noise characteristic. A crystal oscillator oscillates a fixed frequency as an atomic resonance frequency. A direct digital synthesizer inputs an output of the crystal oscillator as a system clock and also ...

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Rubidium Oscillators | Quartzlock

Rubidium Oscillators. Our range of precise low noise rubidium oscillators in a variety of sizes to suit all appliations. These acurate frequency references are used in telecoms, aviation, nautical and precision test and measurement enviroments. For a technical discussion of rubidium oscillators go here or select a product range below.

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Measurement, Instrumentation, and Sensors Handbook ...

femtoseconds (fs, 10−15 s) ... The three major types of commercial atomic oscillators are based on rubidium, cesium, and hydrogen atoms, respectively The least expensive and most common type is the rubidium oscillator, based on the

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Time and Frequency Metrology: Fundamental concepts in …

the time difference of a oscillator: • The frequency offset is 1,16E-11 Hz/Hz • If you had a frequency offset of 5E-07 Hz/Hz, and you want to know the time difference in a day: • The delay is 43 milliseconds per day ( ) 86400 0,0000001 f f − =− ∆ ∆t =−(5×10−07)⋅(86400)

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Stability and Noise Performance of Various Rubidium Standards

Among the well-known time and frequency standards from Hewlett Packard and other vendors, the HP 5065A rubidium vapor frequency standard offers the best medium-term frequency stability of any device that the casual (or even hardcore) "time nut" is likely to encounter. The Allan deviation of the best commercial cesium-beam standards like the HP 5071A tends to …

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Rubidium standard - Wikipedia

Commercial rubidium clocks are less accurate than caesium atomic clocks, which serve as primary frequency standards, so the rubidium clock is a secondary frequency standard. All commercial rubidium frequency standards operate by disciplining a crystal oscillator to the rubidium hyperfine transition of 6.8 GHz (6 834 682 610.904 Hz).

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Frequency Standards. Rubidium & OXCO

Rubidium Oscillator Modules. Rubidium oscillators can be used as frequency references in OEM applications. Low cost models are available as well as many options. SG1640 Crystal Based GPS Disciplined Frequency Standard . The SG1640 is a 10 µHz to 1640 MHz synthesizer with a GPS disciplined oven controlled crystal oscillator. This product is a ...

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Rubidium Oscillator - IQD

Rubidium oscillators are a type of atomic clock and are the most accurate time standards known and are used as time distribution services to control things such as telecommunications infrastructure, TV broadcasts and global navigation satellite systems (GPS). The part of the rubidium oscillator which is responsible for providing the output ...

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Long Term Experimental Results of a Rubidium Atomic Clock ...

rubidium based clock, via the RS232 interface. Fig. 4 shows the internal diagram of this last unit. The output frequency (10 MHz) of the free running rubidium oscillator (on the top, to the left) can be lightly changed by a control voltage. This voltage is generated using a reference zener, a …

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