Ultraviolet light switch and laser scanning system formed by same
A laser scanning and ultraviolet light technology, applied in the application field of avionics technology, can solve the problems of slow switching speed, complex mechanical structure, large crosstalk, etc., to enhance the stability and reliability of work, reduce the volume of the scanning structure, simple and efficient The effect of laser scanning
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Embodiment 1
[0055] like Figure 1-2 As shown, an embodiment of the present invention provides an ultraviolet light switch, including an incident port 1, n electro-optic effect generating devices 3, n polarizing beam splitters 4, an exit port 2, and an electronically controlled driving system 5;
[0056] The incident laser A passes through the incident port 1, the electro-optic effect generating device 3, the polarizing beam splitter 4 and the exit port 2 in turn to form the outgoing laser B. The electro-optic effect generating device 3 and the polarizing beam splitting mirror 4 are alternately arranged, and each electro-optic effect generating device 3 The voltage control terminals of each are connected with the voltage output terminal of the electronically controlled drive system 5;
[0057] Among them, the reflection end of the 1st to n-1 polarizing beam splitters 4 is provided with the exit port 2, the reflection end and the transmission end of the nth polarizing beam splitter 4 are bo...
Embodiment 2
[0063] In the embodiment of the present invention, taking n as 3 as an example, in the case of figure 2 In the UV light switch structure shown, the voltage loading on the electrodes of the electro-optic effect generating device 3 is controlled by the electronic control drive system 5, so that a single Pockels cell can have the following two working modes:
[0064] (1) When a crystal half-wave voltage is applied to the electro-optic effect generating device 3, the polarization state of the outgoing light through the Pockels cell is rotated by 90° compared with the incident light;
[0065] (2) When no voltage is applied, the polarization states of the outgoing light and the incident light of the electro-optic effect generating device 3 remain unchanged.
[0066] In the embodiment of the present invention, based on the above two operating modes of the electro-optical effect generating device 3, the incident laser A passes through the electro-optical effect generating device 3 an...
Embodiment 3
[0076] In the embodiments of the present invention, in some application examples, the ultraviolet light switch provided by the present invention can achieve the effect of expanding the scanning optical path by means of cascading. Figure 4 In the cascaded UV switches shown, each output port 2 can work independently, and the output laser B of one of the output ports 2 of the previous UV switch is used as the incident laser A of the latter UV switch, that is, the previous UV switch. One outgoing port 2 of the ultraviolet light switch is coupled with the incoming port 1 of the latter ultraviolet light switch. exist Figure 4 In the cascaded structure of two UV switches shown in , the number of outgoing lasers increased to 7 channels after the incident laser A passes through the two UV switches, and the outgoing lasers B of each channel can be scanned in time sequence. In practical applications, the number of cascaded UV switches can be determined according to requirements. The r...
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