Optical circuit device and adjustment method for ion microwave clock

Abstract

The present invention discloses a light path device and adjustment method for a mercury ion microwave clock. The device of the present invention includes a mercury lamp, a spherical lens, a diffraction grating, and a mercury ion trap chamber. The present invention also provides an adjustment method. The method includes the following steps that: light emitted by the mercury lamp is collimated through the spherical lens; light of a wavelength of 194 nm and light of a wavelength of 253 nm are separated from the collimated light through the diffraction grating; and the mercury ion trap chamber isutilized to pump the light of the wavelength of 194 nm. With the light path device and adjustment method for the mercury ion microwave clock of the invention, the problem of high system noise of an existing mercury ion microwave clock can be solved. According to the light path device and adjustment method for the ion microwave clock of the invention, spatial separation is performed on the stray spectra of the light of the wavelength of 194 nm and the light of the wavelength of 253 nm, and therefore, the suppression ratio of pump light to stray light is greatly increased, system noises can be decreased, and the signal-to-noise ratio of detection signals can be improved.

Description

technical field [0001] The present application relates to the field of laser technology, in particular to an optical circuit device and method for a mercury ion microwave clock. Background technique [0002] The mercury ion microwave clock has the advantages of small volume and high stability index. It has a wide range of applications in satellite navigation, space exploration, punctual timing, measurement and other fields. At present, the stability of the mercury ion clock developed by JPL (Jet Propulsion Laboratory) in the United States has reached 4E-14 / τ 1 / 2 The level is already higher than the level of the current active hydrogen atomic clock. [0003] The optical path system with a wavelength of 194nm is an important part of the mercury ion microwave clock. At present, radio frequency mercury lamps are mostly used to generate spectra with a wavelength of 194nm, but the spectra generated by mercury lamps are relatively complicated. There are not only spectral lines wi...

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Problems solved by technology

[0004] This application proposes an optical path device and adjustment method for a mercury ion microwave clock, which solves the problem of high system noise in the existing mercury ion microwave clock

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