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Strong-laser phase-conjugate mirror

A phase conjugation and strong laser technology, applied in the field of optics, can solve the problems of poor applicability and achieve the effects of fast response, good stability and high energy conversion efficiency

Inactive Publication Date: 2010-06-02
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of poor applicability of existing strong laser phase conjugation means simply using SBS technology, and to provide a strong laser phase conjugation mirror

Method used

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  • Strong-laser phase-conjugate mirror

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Experimental program
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specific Embodiment approach 1

[0015] Specific implementation mode one: the following combination figure 1 with figure 2 Describe this embodiment, this embodiment is a high-quality phase conjugate light acquisition method of strong laser, the main laser beam E is incident along one side of the main medium pool 7 3 and P polarization state of the first reference light E 1P , the second reference light E of S polarization state is incident along the other side of the main medium cell 7 2S ,

[0016] Incident main laser light E 3 Including the P polarization state component E 3P and the S polarization state component E 3S , where the S polarization state component E 3S The intensity of the first reference light E 1P 0.8 to 1.2 times the strength,

[0017] Simultaneously incident first reference light E 1P and the second reference light E 2S Coaxial counterpropagation, main laser E 3 The incident time of the first reference light E 1P The incident time is delayed by 0.3 pulse width at half maximum ...

specific Embodiment approach 2

[0022] Specific Embodiment 2: The difference between this embodiment and Embodiment 1 is that the main laser E 3 The S polarization state component E 3S Intensity is the first reference light E 1P 1 times the intensity of the method, other steps and technical parameters are the same as those of Embodiment 1.

specific Embodiment approach 3

[0023] Specific Embodiment 3: The difference between this embodiment and Embodiment 1 is that the main laser E 3 The incident time of the first reference light E 1P The incident time is delayed by 0.5 pulse half-width time, and other steps and technical parameters are the same as those in Embodiment 1.

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Abstract

The invention discloses a strong-laser high-quality phase position conjugate light obtaining method and a phase position conjugate lens thereof. The invention belongs to the field of optics and aims at solving the problem of pool applicability of the existing strong-laser conjugate means by simply adopting the stimulated Brillouin scattering (SBS) technology. The invention provides a compound phase position conjugate method which combines BEFWM and SBS mechanisms as well as a phase position conjugate lens which applies the design of the method; wherein, high quality phase position conjugate light seeds are generated by the BEFWM; then high efficient amplifying is finished by BSBS amplifying, thus leading a device to have the advantages of non-threshold, high fidelity, stability and good transient state and steady state adaptability as well as high conversion efficiency, realizes to mutually complement the advantages of the two phase position conjugate technologies of BEFWM and SBS, andhave high laser loading capacity. The compound effects of BEFWM and SBS are realized by controlling the polarization of each light beam and delaying the effect of each light beam. The invention is suitable for a high-power high-energy short-pulse strong-laser system in particular.

Description

technical field [0001] The invention relates to a phase conjugate mirror, which belongs to the field of optics. Background technique [0002] The use of phase conjugate mirror (PCM) in high-intensity (referring to high pulse energy, high power) laser devices is of great significance for improving beam quality and reducing system cost. For a long time, people have been trying to explore ways to improve PCM fidelity, stability, load capacity, and steady-state and transient adaptability to meet the application requirements of strong laser systems, so as to realize its real practicality. [0003] Stimulated Brillouin Scattering (SBS) and Brillouin Enhanced Four-wave Mixing (BEFWM) are the two most promising approaches to realize phase conjugation. Among them, SBS has a simple structure and high conversion efficiency (up to 95%), and is currently the mainstream technology used in intense laser PCM. However, its conjugate phonon mode originates from the acoustic noise in the med...

Claims

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Application Information

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