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Rotational transition based clock, rotational spectroscopy cell, and method of making same

A clock, steam room technology, applied in the field of steam room, can solve the problems of high power consumption and extra cost and space

Active Publication Date: 2017-09-26
TEXAS INSTR INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Thus, electronic transition clocks suffer from relatively high power consumption and additional cost for the required circuitry including lasers, modulators, photodetectors, and other optical components such as collimators, isolators, polarizers, and lenses and space

Method used

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  • Rotational transition based clock, rotational spectroscopy cell, and method of making same
  • Rotational transition based clock, rotational spectroscopy cell, and method of making same
  • Rotational transition based clock, rotational spectroscopy cell, and method of making same

Examples

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Embodiment Construction

[0022] In the drawings, like reference numerals refer to like elements throughout, and the various features are not necessarily drawn to scale. Novel, compact, energy-efficient spin-transition clock systems and simple low-cost packaging and fabrication processes can be employed to facilitate the development of wafer-scale or chip-scale spinning spectral chambers or vapor chambers in silicon-based processes for atomic clocks and other applications implement. Dipolar gas molecules (such as water or H 2 O) Quantum spin state transitions have been defined and such molecules absorb energy with very reproducible frequencies when transitioning between spin states. For example, water absorbs energy based on quantum spin state transitions at 183.31 GHz. In at least one example, the clock device 100 includes a vapor chamber 101 fabricated in a silicon-based process that eliminates the need for lasers, modulators, photodetectors, and other optical components and associated temperature ...

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Abstract

Described examples include a millimeter wave atomic clock apparatus (100), chip scale vapor cell (101), and fabrication method in which a low pressure dipolar molecule gas is provided in a sealed cavity with a conductive interior surface (103b, 104) forming a waveguide. Non-conductive apertures (108a, 108b) provide electromagnetic entrance to, and exit from, the cavity. Conductive coupling structures (110a, 110b) formed on an outer surface of the vapor cell (101) near the respective non-conductive apertures (108a, 108b) couple an electromagnetic field to the interior of the cavity for interrogating the vapor cell (101) using a transceiver circuit (130) at a frequency that maximizes the rotational transition absorption of the dipolar molecule gas in the cavity (103) to provide a reference clock signal (REFCLK) for atomic clock or other applications.

Description

technical field [0001] The present invention relates generally to vapor chambers, and more particularly to rotational transition based clocks, vapor chambers and methods of manufacture thereof. Background technique [0002] Atomic clocks use the frequency of electron transitions in alkali metal vapor as a frequency reference. Alkali metal gases (such as cesium, rubidium, or other atoms with a single electron in an outer shell) undergo optical transitions at very high discrete frequencies of a few hundred GHz (optical wavelengths of about 800 to 900 nm). The atomic clock determines the frequency of electronic transitions of vaporized basic atoms by optically interrogating the gas over a bandwidth encompassing the transition frequency, where the detected absorption at the transition frequency identifies the clock's absolute frequency reference. Chip-scale alkaline vapor atomic clocks typically use optical transparency peaks (e.g., coherent quorum trapping) offset by absorptio...

Claims

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Application Information

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IPC IPC(8): G04F5/14
CPCG04F5/14G01N29/36G01N29/44G04F5/145H03L7/26
Inventor 胡安·亚力杭德罗·赫布佐默本杰明·S·库克菲利普·纳多西蒙·乔舒亚·雅各布斯蒂亚戈·厄尔·特朗布利
Owner TEXAS INSTR INC
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