Four-path incoherent Co-beam MOPA laser system

An incoherent and laser technology, applied in the direction of lasers, nonlinear optics, laser components, etc., can solve problems such as difficult output power, and achieve the effect of good beam quality and high laser output power

Inactive Publication Date: 2006-10-18
HARBIN INST OF TECH AT WEIHAI
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Problems solved by technology

[0002] We know that at present, incoherent beam combining MOPA systems based on the SBS principle mostly use two-way power amplification systems to obtain two beams of polarized light whose polarization directions are perpendicular to each other, and then superimpose and combine the two beams of incoherent

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  • Four-path incoherent Co-beam MOPA laser system
  • Four-path incoherent Co-beam MOPA laser system
  • Four-path incoherent Co-beam MOPA laser system

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[0014] from figure 1 It can be seen that a four-way incoherent beam combining MOPA laser system is composed of a main oscillation system, a PCM power amplification system with a phase conjugate mirror, and a reflective prism. The main oscillating system is composed of a main oscillator 10, three beam splitters 11, 12, 13, and a terminal total reflection plane mirror 14. The three beam splitters 11, 12, 13, and the terminal total reflection plane mirror 14 are sequentially distributed on are on the optical axis 1-1 and form an included angle of 45° with the optical axis 1-1. The PCM power amplification system is composed of four single-channel power amplification systems 2-1, 2-2, 2-3, and 2-4, and the single-channel power amplification system 2-1 is composed of a SBS phase conjugate mirror 211, a biconvex lens 221, amplifier 231, rotator 241, polarization beam splitter 251, the single optical axis optical system that end total reflection mirror 261 forms, single-channel power...

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Abstract

A MOPA laser system of four no coherent beams is composed of master oscillation unit formed by master oscillator, three beam splitters and one tail end total-reflection flat mirror; PCM power amplification unit including four single-channel power amplification units as each single-channel power amplification unit being formed by SBS phase conjugate mirror, biconvex lens, amplifier, rotator, polarization beam splitter and tail end total-reflection mirror; and reflection prism being used with two said units to form four beams of no coherent laser superposed beam.

Description

technical field [0001] The invention belongs to a laser output system, specifically a four-way incoherent beam combining MOPA (master oscillator) with high beam quality and high power laser output based on the SBS (stimulated Brillouin scattering) waveform distortion compensation principle - power amplification) laser system. Background technique [0002] We know that at present, incoherent beam combining MOPA systems based on the SBS principle mostly use two-way power amplification systems to obtain two beams of polarized light whose polarization directions are perpendicular to each other, and then superimpose and combine the two beams of incoherent light, but use polarizers There is a disadvantage of beam combining, that is, the maximum beam combining laser is two beams. At present, the reported MOPA polarization beam combining system using SBS has an average output laser power of 500W, but it is very difficult to continue to increase the output power. Contents of the i...

Claims

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Application Information

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IPC IPC(8): H01S3/00G02B26/00G02B27/00G02F1/00H01S3/10
Inventor 田兆硕孙正和曲士良
Owner HARBIN INST OF TECH AT WEIHAI
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