Optical frequency comb generation system and generation method

Abstract

The embodiment of the invention discloses an optical frequency comb generation system and a generation method. The optical frequency comb generation system comprises a pumping source, a coupling structure and a light force micro-cavity, wherein the pumping source is used for providing pumping light; the coupling structure is used for coupling the pumping light into the light force micro-cavity; the light force micro-cavity comprises an optical mode and a mechanical mode; the pumping light excites an optical mode in the light force micro-cavity; the optical mode is coupled with the mechanical mode to generate dynamic reaction; the dynamic reaction drives the mechanical mode, generates an optical sideband and outputs an optical frequency comb; the pumping light and the light force micro-cavity are in a big blue detuning state, the coupling structure and the light force micro-cavity are in an over-coupling state, the big blue detuning state is that the difference between the pump light frequency and the optical mode resonance frequency is larger than ten times of the mechanical mode resonance frequency, and the over-coupling state is that the optical mode loss rate and the mechanical mode resonance frequency are in the same magnitude. According to the technical scheme, the high-performance, wide-bandwidth and low-repetition-frequency optical frequency comb for chip integration can be generated.

Description

technical field [0001] Embodiments of the present invention relate to micro-nano optical device technology, and in particular to an optical frequency comb generation system and method. Background technique [0002] Optical frequency combs have important applications in modern optical measurement, high-precision spectroscopy, optical atomic clocks, microwave photonics and other fields. [0003] Typically, optical frequency combs can be generated using mode-locked femtosecond lasers, electro-optic modulation, or Kerr nonlinearity. Compared with traditional mode-locked femtosecond lasers to realize optical frequency combs, although electro-optic modulation or Kerr nonlinearity can realize optical frequency combs in microcavities, thereby achieving miniaturization and even chip integration, these microcavity optical frequency combs are repetitive The high frequency (GHz to THz) greatly limits its applications in the fields of high-resolution spectroscopy, effective molecular ex...

AI Technical Summary

Problems solved by technology

So far, there is no suitable solution for producing microcavity optical frequency combs with < GHz repetitio

Images