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Method for acquiring hyper-stable Stokes frequency shift light

A frequency-shifting and stable technology, applied in the field of nonlinear optics, can solve the problems of poor Stokes frequency-shifting light stability, and achieve the effects of wide application range, high stability, and controllable intensity

Inactive Publication Date: 2010-07-21
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of poor stability of the Stokes frequency shift light obtained by the existing stimulated Brillouin scattering method utilizing the focusing structure, thereby providing a method for obtaining ultra-stable Stokes frequency shift light

Method used

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  • Method for acquiring hyper-stable Stokes frequency shift light
  • Method for acquiring hyper-stable Stokes frequency shift light
  • Method for acquiring hyper-stable Stokes frequency shift light

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specific Embodiment approach 1

[0010] Embodiment 1: This embodiment is described in conjunction with FIG. 1, a method for obtaining ultra-stable Stokes frequency-shifted light, the method for obtaining ultra-stable Stokes frequency-shifted light includes a 1 / 2 wave plate 1, a first polarizer 2, the second polarizer 3, the first reflection mirror 5, the second reflection mirror 4, the first dielectric pool 6, the second dielectric pool 7, lens 8, attenuation plate 11 and 1 / 4 wave plate 12, obtain with this device The method of ultra-stable Stokes frequency-shifted light is as follows: the linearly polarized light input by the system is incident on the 1 / 2 wave plate 1, transmitted through the 1 / 2 wave plate 1 to the first polarizer 2, and divided into The transmitted light beam A and the reflected light beam C, the light beam A is incident on the first medium pool 6, and the initial part of the pulse front of the light beam A passes through the first medium pool 6 and is incident on the attenuation sheet 11, ...

specific Embodiment approach 2

[0012] Embodiment 2: The difference between this embodiment and the method for obtaining ultra-stable Stokes frequency-shifted light described in Embodiment 1 is that the linearly polarized light input by the system is the linearly polarized light in the P direction or the linearly polarized light in the S direction. Light.

[0013] In this embodiment, the linearly polarized light vibrating in the P or S direction passes through the 1 / 2 wave plate 1 to adjust the polarization direction, wherein the P component and the S component each account for 50%.

specific Embodiment approach 3

[0014] Embodiment 3: The difference between this embodiment and the method for obtaining ultra-stable Stokes frequency-shifted light described in Embodiment 2 lies in the Brillouin medium in the first dielectric pool 6 and the second dielectric pool 7 The medium in is the same Brillouin medium, and both are CS 2 , CCl 4 , FC-72, FC-75, acetone or ethanol.

[0015] The invention is applicable to incident laser light with different wavelengths, and it only needs that the Brillouin gain spectrum of the selected medium corresponds to the incident laser light.

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Abstract

The invention discloses a method for obtaining ultra-stable Stokes frequency shift light and relates to the technical field of nonlinear optics. The method solves the problem of poor stability of the Stokes frequency shift light obtained by the existing method. In the method, the linearly polarized lights injected by a system are divided into a transmitted light beam A and a reflected light beam C at the location of a first polaroid sheet; the head part of the pulse edge of the light beam A penetrates a first medium pool, passes through an attenuation sheet and a quarter wave plate, then is focused to a second medium pool by a lens, and generates a light beam B in the second medium pool; the light beam B reversely returns into the first medium pool along the optical path of the light beamA and generates interference when encountering the light beam C in the first medium pool; the interference thereof forms a beat frequency and generates a stable acoustic wave; the pulse body part of the light beam A is dispersed by the acoustic wave to form a light beam D, namely the frequency shift light. The method is suitable for various systems and occasions which need the ultra-stable Stokesfrequency shift light.

Description

technical field [0001] The invention relates to the technical field of nonlinear optics, in particular to a method capable of obtaining ultra-stable Stokes light. Background technique [0002] In many fields of nonlinear optical technology, especially in the design and implementation of various laser stimulated Brillouin amplification systems, stable and high-quality Stokes frequency-shifted seed light is required, such as Stokes phase-locking in Brillouin laser parallel beam systems Signal light; Stokes induced light in pulse shaping system; Brillouin seed light in Brillouin amplification experiment system, etc. These Stokes frequency-shifted lights play an important role in the system, and their stability directly determines the performance of the entire system. At present, in these application systems, the general method to obtain Stokes frequency-shifted light is to directly use the stimulated Brillouin scattering (SBS) of the focusing structure to generate Stokes light...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/35
Inventor 吕志伟朱成禹何伟明
Owner HARBIN INST OF TECH
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