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High-precision optical frequency synthesizer

A frequency synthesis device and digital frequency synthesis technology, applied in optics, light demodulation, instruments, etc., can solve the problems of no pre-set optical frequency ratio, inconvenience, etc.

Pending Publication Date: 2022-01-11
EAST CHINA NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, optical frequency combs are often only used to transmit the coherence of light, or to measure the ratio of two laser frequencies, and the optical frequency ratio is not preset, which brings inconvenience to the realization of optical frequency synthesis.

Method used

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  • High-precision optical frequency synthesizer
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Embodiment

[0020] Example: such as figure 1 As shown, this embodiment specifically relates to a high-precision optical frequency synthesis device, which includes a multi-channel optical frequency divider and an atomic optical clock, and also involves a reference laser and an output laser; wherein:

[0021] Reference laser, used to generate laser with narrow line width and stable frequency, its frequency is recorded as n ref ; If the optical reference cavity frequency-stabilized laser is used, the short-term laser frequency stability can be better than 10 −15 (1 second averaging time), this type of laser can be used as a reference laser for high-precision optical frequency synthesis devices;

[0022] Multi-channel optical frequency divider, used to convert the frequency characteristics of the reference laser to other wavelengths with high fidelity, such as the output laser of the optical frequency synthesis device or the probe laser in the atomic optical clock; the frequency is n ref Th...

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Abstract

The invention discloses a high-precision optical frequency synthesizer which comprises a multi-channel optical frequency divider and an atomic optical clock; wherein the multi-channel optical frequency divider is used for converting the frequency characteristic of input reference laser to other wavelength positions in a high-fidelity manner and controlling the frequency of output laser; and the atomic optical clock is used for calibrating the optical frequency synthesis device, so that the optical frequency synthesis device obtains long-time frequency stability and high precision. The invention has the advantage that the optical wave with the same frequency characteristic as that of the frequency-stabilized laser or the optical clock can be output at any specified frequency in a wide wavelength range.

Description

technical field [0001] The invention belongs to the technical field of laser frequency precision control, and in particular relates to a high-precision optical frequency synthesis device. Background technique [0002] Electromagnetic waves with good coherence, stable frequency and high precision have always been the signals pursued by application research fields such as communication, radar, global positioning system, precision spectroscopy and precision measurement. Microwave frequency synthesizers have been widely used in the above-mentioned high-tech and scientific research fields. It can output electromagnetic waves with high-precision frequency characteristics comparable to microwave oscillators or microwave clocks at any specified microwave frequency. It is an important tool for microwave applications. At present, the electromagnetic waves generated by frequency-stabilized lasers or optical clocks are in the optical band, and their short-term frequency stability can re...

Claims

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Application Information

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IPC IPC(8): G02F2/00
CPCG02F2/00
Inventor 姚远蒋燕义马龙生
Owner EAST CHINA NORMAL UNIV