High-beam-quality high-power output combining device of semiconductor laser
A semiconductor and high-beam technology, applied in the direction of semiconductor laser optical devices, semiconductor lasers, lasers, etc., can solve the problems that cannot be superimposed infinitely, generally no more than 50 layers, it is difficult to directly apply light sources, and the quality of output beams deteriorates, etc., to achieve Good beam quality level, achieve high power and high beam quality, and improve the effect of output power
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[0031] Example 1
[0032] Reference figure 1 In this embodiment, the semiconductor laser beam combining device with high beam quality and high power output includes two beam combining subsystems: beam combining subsystem I and beam combining subsystem II with the same structure. The output sub-beams of the two beam combining subsystems are directly incident. To the second grating 7. The sub-beams output by the output mirror 6 of the beam combining subsystem I and the sub-beams output by the output mirror 6 of the beam combining subsystem II are directly incident on the second grating 7 of the pair of gratings. In order to obtain a higher diffraction efficiency for the sub-beam, the incident angle of the sub-beam is as close as possible to the Littrow angle of the second grating 7 at the blaze wavelength. The second grating 7 and the third grating 8 are placed in parallel, and the third grating 8 will effectively compensate for the dispersion generated by the second grating 7. T...
Example Embodiment
[0034] Example 2
[0035] Reference figure 2 In this embodiment, the number N of the beam combining subsystems is greater than 2 (the structures of the N beam combining subsystems are all the same, and the same as in the above embodiment, as shown in the elliptical dotted line), and the semiconductor laser has high beam quality The high-power output beam combining device also includes N mirrors 11, and the N mirrors 11 correspond to the N beam combining subsystems one to one, and are used to reflect the output sub-beams 10 of each beam combining subsystem to the second grating 7 . That is, the sub-beams 10 output by each beam combining subsystem are reflected on the second grating 7 through a mirror 11, and the dispersion of the second grating 7 makes the first-order diffracted beams of the sub-beams 10 of different wavelengths enter the third grating with the same parameters. The same position of the grating 8 is overlapped, and after diffraction by the third grating 8, the co...
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