Laser display light source and laser display system
A laser display and light source technology, which is applied in lasers, laser parts, optics, etc., can solve the problems of complex internal structure of lasers and many steps of laser light frequency change, and achieve the effects of compact structure, reduced energy consumption, and volume saving
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Embodiment 1
[0027] figure 1 A schematic diagram of a laser display light source provided by Embodiment 1 of the present invention is shown, as shown in figure 1 As shown, the laser display light source includes a pump source 1 and a resonant cavity 7 jointly defined by cavity mirrors 4 and 5, and a laser crystal and a periodically polarized crystal comprising at least one periodically polarized crystal are arranged in the resonant cavity 7 combination 3.
[0028] Wherein, the pump light generated by the pump source 1 is input into the laser crystal 4 as excitation, and the laser crystal 4 outputs laser light under the excitation of the pump light. exist figure 1 In particular, the pump light generated by the pump source 1 is incident on the laser crystal 2 from the cavity mirror 4 as an example. Those skilled in the art should be able to understand that the pumping of the laser crystal 4 can be carried out by using small and medium power end pumping or large Power side pumped, e.g. fi...
Embodiment 2
[0054] In this embodiment, the desired white balance requires that the light intensity ratio of the red, green and blue lights be 3:6:1. Such as image 3 As shown, the pump source 1 in the laser display light source in this embodiment adopts a laser diode with an output light wavelength of 808nm, the laser crystal 2 adopts Nb:YVO4 crystal, and the periodically polarized crystal combination 3 includes two periodic poles The polarization crystals are all PPLN crystals, and the polarization periods of the two PPLN crystals are 4.277 microns and 2.137 microns respectively. During the working process of the laser display light source, the laser crystal 2 generates infrared lasers with wavelengths of 1064nm and 1342nm respectively. When the infrared lasers of these two wavelengths pass through the periodically polarized crystal combination 3, the infrared laser with a wavelength of 1064nm passes through PPLN crystal with a polarization period of 4.277 microns achieves quasi-phase m...
Embodiment 3
[0060] In this embodiment, the required white balance still requires that the light intensity ratio of the red, green and blue lights be 3:6:1. Figure 4 A schematic diagram of the laser display light source provided in this embodiment is shown. The difference between this embodiment and Embodiment 2 lies in that the periodic polarization duty cycle of the two PPLN crystals forming the periodically poled crystal combination 3 is different.
[0061] The polarization periods of the two PPLN crystals used in this embodiment are still 2.137 μm and 4.277 μm, but the periodic polarization duty cycles are 22% and 46% respectively.
[0062] Through theoretical calculation, it can be concluded that when the infrared laser with a wavelength of 1342nm is input to a PPLN crystal with a polarization period of 2.137 microns and a periodic polarization duty cycle of 22%, the first-order frequency-doubled light (wavelength of 610nm, Belonging to the red light range), the second-order frequenc...
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