A supercontinuum frequency conversion laser based on ppln crystal
A supercontinuum and laser technology, applied in the field of supercontinuum frequency conversion laser systems, can solve the problems of difficult to achieve visible light beam combining output, large loss of soft glass fiber, difficulty in melting taper, etc., to achieve compact structure, easy productization, Effect of increasing interaction distance
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Embodiment 1
[0041] Example 1, the near-infrared supercontinuum pump source 1 is a non-polarization-maintaining near-infrared supercontinuum pump source, with a spectral range of 800-2400nm, a peak power P of 10kW, and an output spot diameter d of 20μm. The first lens 21 and the second lens 22 all adopt the achromatic doublet lens with a focal length of 15mm (making A=1) to form a focusing and collimating system, so that the diameter of the light spot incident on the front surface of the PPLN crystal 3 is 20 μm, and the peak power density p 0.032kW / μm 2 . The 800-2400nm wide-spectrum near-infrared laser generated by the near-infrared supercontinuum pump source 1 is collimated by the first lens 21 and focused by the second lens 22 , and then enters the front face of the PPLN crystal 3 . PPLN crystal 3 is MgO:PPLN crystal doped with 5mol% MgO. The PPLN crystal 3 has a length of 50 mm, a thickness of 2 mm, a width of 3 mm, and a polarization period of 6.84 μm. The reflectance of the incide...
Embodiment 2
[0042] Example 2, the near-infrared supercontinuum pump source 1 is a non-polarization-maintaining near-infrared supercontinuum pump source with a spectral range of 800-2400 nm, a peak power P of 20 kW, and an output spot diameter d of about 10 μm. The first lens 21 adopts an aspheric lens with a focal length of 15 mm, and the second lens 22 adopts an aspheric lens with a focal length of 50 mm to form a focusing and collimating system, so that the diameter of the light spot incident on the front surface of the PPLN crystal 3 is 33.3 μm, and the peak power density p 0.023kW / μm 2 . The 800-2400nm wide-spectrum near-infrared laser generated by the near-infrared supercontinuum pump source 1 is collimated by the first lens 21 and focused by the second lens 22 , and then enters the front face of the PPLN crystal 3 . PPLN crystal 3 is MgO:PPLN crystal doped with 5mol% MgO. The PPLN crystal 3 has a length of 50 mm, a thickness of 2 mm, a width of 3 mm, and a polarization period of 6...
Embodiment 3
[0043] Example 3, the near-infrared supercontinuum pump source 1 is a non-polarization-maintaining near-infrared supercontinuum pump source with a spectral range of 800-2400 nm, a peak power P of 10 kW, and an output spot diameter d of about 20 μm. The first lens 21 and the second lens 22 all adopt the achromatic doublet lens with a focal length of 15mm (making A=1) to form a focusing and collimating system, so that the diameter of the light spot incident on the front surface of the PPLN crystal 3 is 20 μm, and the peak power density p 0.032kW / μm 2 . The 800-2400nm wide-spectrum near-infrared laser generated by the near-infrared supercontinuum pump source 1 is collimated by the first lens 21 and focused by the second lens 22 , and then enters the front face of the PPLN crystal 3 . PPLN crystal 3 is MgO:PPLN crystal doped with 5mol% MgO. The PPLN crystal 3 has a length of 50 mm, a thickness of 2 mm, a width of 3 mm, and a polarization period of 29.5 μm. The reflectance of th...
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