Common optical path ultra-short laser pulse beam splitting method and beam splitting device capable of adjusting pulse intervals
An ultra-short laser, pulse interval technology, applied in optics, optical components, instruments, etc., can solve the problems of many adjustment steps and complex structure, and achieve the effect of simple adjustment
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Embodiment 1
[0032] Such as figure 2 As shown, the embodiment of the present invention provides a synchronously adjustable pulse interval ultrashort laser pulse beam splitting device, which includes: eleven reflectors, two beam splitters and three precision translation stages, of which eight The mirrors are four mirror pairs respectively forming four delay line structures;
[0033] 1 is the first spectroscopic flat film (BS 1 ), for splitting a single ultrashort laser pulse into two sub-pulses with ultrashort pulse width and pulse interval;
[0034] 2 is the second delay line structure DL 2 : It is located on the reflected light path of the first beam-splitting flat plate, composed of a pair of mirrors, used to turn the light path and adjust the beam-splitting plate BS 1 The pulse delay of the split double pulse;
[0035] 4 is the first component DL of the third delay line structure 3 -1: It is located on the transmitted light path of the first beam splitter, composed of a pair of mi...
Embodiment 2
[0043] figure 1 It is a schematic flow chart of an ultrashort laser pulse beam splitting method with synchronously adjustable pulse interval of the present invention, as shown in figure 1 As shown, the method includes:
[0044] Step 101, pass the ultrashort laser single pulse through the first spectroscopic flat film (BS 1 ) After beam splitting, two sub-pulses with ultra-short pulse width and pulse interval are obtained;
[0045] Specifically, beam splitting is performed through a beam splitter. Further, in addition to the beam splitter, it also includes other commonly used beam splitting devices such as thin film beam splitters.
[0046] Step 102, the two sub-pulses obtained in the first step respectively enter the delay line structure DL 2 (second delay line structure) and delay line structure DL 3 -1 (the first component of the third delay line structure), and then through the second beam splitter (BS 2 ) to split the beam again to obtain four sub-pulses;
[0047]...
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