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Non-colinear serial beam combination apparatus based on stimulated Brillouin scattering

A stimulated Brillouin and non-collinear technology, applied in nonlinear optics, lasers, phonon exciters, etc., can solve the problem of high polarization state requirements of seed light and pump light, high requirements of beam energy stability, The number of optical components and other issues can be reduced to reduce system loss, improve adaptability, and reduce complexity

Inactive Publication Date: 2008-12-10
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The problem in this scheme is: since the generation time of the acoustic wave field is controlled by controlling the energy level of the laser beam, the energy stability of the beam is required to be very high
[0008] A common problem in the above-mentioned structures is that there are a large number of optical elements, so that the light loss is large during the transmission process, and the polarization state of the seed light and the pump light is highly required.

Method used

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  • Non-colinear serial beam combination apparatus based on stimulated Brillouin scattering
  • Non-colinear serial beam combination apparatus based on stimulated Brillouin scattering
  • Non-colinear serial beam combination apparatus based on stimulated Brillouin scattering

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specific Embodiment approach 1

[0019] Specific embodiment 1: The present embodiment will be described below in conjunction with FIG. 1. This embodiment is composed of n non-collinear Brillouin amplifying structural units 1, and n non-collinear Brillouin amplifying structural units 1 are connected in series. Each The non-collinear Brillouin amplification structure unit 1 is composed of a dielectric pool 1-1 and an optical trap 1-2, the seed light 3 is incident into the dielectric pool 1-1 along the direction parallel to the dielectric pool 1-1, and the pumping light 4 is from The other side of the medium cell 1-1 is incident into the medium cell 1-1, and the angle between the pumping light 4 and the seed light 3 is α,

[0020] The remaining pumping light 4 after amplifying the seed light 3 in the medium pool 1-1 is incident on the optical trap 1-2, and the output of the seed light 3 amplified by the pumping light 4 in the medium pool 1-1 enters the next stage non- Collinear Brillouin amplification structural...

specific Embodiment approach 2

[0025] Specific embodiment two: the difference between this embodiment and embodiment one is that it also includes m total reflection mirrors 2, and n non-collinear Brillouin amplification structure units 1 are divided into k groups of non-collinear Brillouin amplification structures Unit group 5, k groups of non-collinear Brillouin amplification structure unit group 5 are connected in series through m total reflection mirrors 2,

[0026] Each non-collinear Brillouin amplification structure unit 1 is composed of a dielectric pool 1-1 and an optical trap 1-2, the seed light 3 is incident into the dielectric pool 1-1 along the direction parallel to the dielectric pool 1-1, and the pumping light 4 is incident into the medium cell 1-1 from the other side of the medium cell 1-1, the angle between the pumping light 4 and the seed light 3 is α,

[0027] The remaining pumping light 4 after amplifying the seed light 3 in the medium pool 1-1 is incident on the optical trap 1-2, and the ...

specific Embodiment approach 3

[0031] Embodiment 3: This embodiment differs from Embodiment 2 in that the number of non-collinear Brillouin amplifying structural units 1 in each non-collinear Brillouin amplifying structural unit group 5 is equal or unequal. Other compositions and connection structures are the same as those in Embodiment 2.

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Abstract

A noncollinear serial beam combination device based on the stimulated brillouin scattering relates to a laser serial beam combination device, and belongs to the optical field. The noncollinear serial beam combination device based on stimulated brillouin scattering aims at overcoming the defects that the system load of superposed and coupled parallel beam combinations and backward injection seed beam combinations is not high and the back-reflection rate of SBS is low, and simultaneously aims at solving the problems that the demand of the light beam energy stability of an independent medium pool SBS parallel beam combination is high and the number of optical elements is large. The present invention comprises noncollinear brillouin magnified structure units with the number of n; wherein, each of the noncollinear brillouin magnified structure unit is composed of medium pools and optical traps; the seed beams are incident in the medium pools in a direction parallel to the medium pools, and pump beams are incident in the medium pools from the other side of the medium pools. The included angle between the seed beams and the pump beams is alpha. After the seed beams in the medium pools are magnified, the residual pump beams are incident in the optical traps. The seed beams magnified by the pump beams in the medium pools are conveyed to the next noncollinear brillouin magnified structure unit.

Description

technical field [0001] The invention relates to a laser serial beam combining device, which belongs to the field of optics. Background technique [0002] Laser beam combination is a technical means to obtain high energy and high power laser output by combining multiple small energy and low power laser beams. At present, solid-state pulsed lasers are mostly used in high-energy and high-power lasers. Among the existing beam combining methods, the principle of nonlinear optical phase conjugation is mostly used in solid-state pulsed lasers. The principle of nonlinear optical phase conjugation The main one in parallel beam combination is stimulated Brillouin scattering (SBS), which is a nonlinear method that transfers the optical power of the forwardly transmitted optical signal to the backward scattered light and phonon field. Effect) Phase Conjugate Parallel Beaming. In terms of the application of solid-state pulsed lasers, SBS phase-conjugated parallel beams are mainly divid...

Claims

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Application Information

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IPC IPC(8): G02F1/35H01S3/00
Inventor 吕志伟王双义王雨雷
Owner HARBIN INST OF TECH
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