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An Assessment of Precision Time and Time Interval Science and Technology (2002) / Chapter Skim
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4. Research Opportunities in PTTI
Pages 34-38

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From page 34...
... or far detuned light fields to allow confinement of neutral atoms is essential for the isolation of atoms from the perturbing collisions that are encountered with cell confinement. This reduces Doppler broadening of atomic transitions by significant amounts, reducing first- and second-order Doppler shifts to nearly negligible values.
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From page 35...
... This area of research is still quite young and will require much work before applications might be realized. MATERIALS SCIENCE Materials science plays a key and often underappreciated role in the development of PTTI devices.
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From page 36...
... The feasibility of growing dislocation-free, ultrahigh-purity quartz has been demonstrated in the United Kingdom, but there is still no method for producing amounts sufficient to meet DOD needs. Developing such a capability could pay off by enabling the production and fielding of low-power, lowcost, high-performance quartz clocks that would make frequency-hopping systems virtually invulnerable to smart jammers and improve the ability to locate radio emitters.
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From page 37...
... Research programs at universities are needed to realize the required CAD models and simulation capabilities. Improvements in resonator design can lead to devices for improved missile accuracy, better surveillance systems, more accurate onboard radar systems for missile guidance, superior IFF systems, and the ability to effectively conduct radar spoofing.
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From page 38...
... Photonics Technology Many realizations of the laser-cooled or laser-excited atomic clocks rely on low-cost and low-power semiconductor lasers. These devices are needed at specific wavelengths corresponding to cesium and rubidium transitions.
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Key Terms

  • amo physics
  • local oscillators
  • atomic clock
  • power consumption
  • accurate onboard

  • missile accuracy
  • onboard radar
  • atomic transitions
  • laser cooling
  • radio emitters

  • ptti devices
  • fundamental quantum
  • radar spoofing
  • neutral atoms
  • quantum noise

  • smart jammers
  • missile guidance
  • acoustic wave
  • hydrogen masers
  • locate radio

  • semiconductor microfabrication
  • circuit designs
  • demonstrate piezoelectricity
  • resonator design
  • bulk devices

  • alkali metal
  • mems technology
  • narrow transitions
  • precise signals
  • closely associated


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