Generation method of high-precision optical wavelength standard based on femtosecond optical comb

Abstract

The invention provides a generation method of a high-precision optical wavelength standard based on a femtosecond optical comb. The method comprises the following steps that 1, the pulse repeated frequency fr and the system frequency shift f0 of the femtosecond optical comb are locked into the microwave frequency standard; correction is performed to obtain the wavelength value corresponding to each comb tooth in the optical comb; 2, the wavelength signal of a certain comb tooth in the femtosecond optical comb and the optical signal output by a semiconductor laser are subjected to frequency beating processing and regulation to obtain the high-precision optical wavelength signal output used as an optical wave length standard source. By using the technical scheme, the femtosecond optical comb can output a series of standard optical wave lengths in a range from near infrared light to visible light spectrums; the semiconductor laser with the corresponding wavelength is matched; the optical wavelength standard covering the near infrared light to visible light spectrums can be built.

Description

technical field [0001] The invention belongs to the technical field of optical wavelength standards, and in particular relates to a method for generating a high-precision optical wavelength standard based on a femtosecond optical comb. Background technique [0002] The measurement of optical wavelength has important applications in the fields of laser ranging, navigation and positioning, optical fiber communication and optical fiber sensing. At present, the existing optical wavelength standard uses specific gas absorption lines to stabilize the frequency of lasers to achieve stable optical wavelength output. However, there are few available gas absorption lines, and the frequency-stabilized laser output can only be achieved at several wavelength points, and it is impossible to achieve high-precision optical wavelength signal output in a wide spectral range. [0003] Therefore, there are defects in the prior art and need to be improved. Contents of the invention [0004] ...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that the existing optical wavelength standards have few standard wavelength points in a wide spectral range, the present invention provides a method for generating high-precision optical wavelength standards based on femtosecond optical combs, which realizes spectral range from near-infrared to visible light Standard optical wavelength output within the

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