Ultra-short laser pulse multi-channel delay synchronization test method
A multi-channel delay and synchronization test technology, applied in the direction of instruments, etc., can solve the problem of low synchronization accuracy
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Embodiment 1
[0082] Such as image 3 As shown, the schematic diagram of Embodiment 1 of the ultrashort pulse delay synchronous detection and control device of the present invention, in the figure, a 50:50 polarization maintaining beam combiner 1, an online polarizer 2, a spectrometer 3, a data processing PC4, and a 50:50 polarization maintaining beam splitter 5, calibration delayer 6.1, calibration fiber 6.2, mode-locked laser 14. 50:50 polarization maintaining beam combiner 1, 50:50 polarization maintaining beam splitter 5, and the pigtail length of calibration delayer 6.1 are about 1m. The entire setup uses polarization maintaining fiber. The central wavelength of the mode-locked laser 14 is about 1563 nm, and the spectral half-maximum width is about 6 nm. The length of the calibration optical fiber 6.2 is about 2m, so that the delay difference between the two paths is small, which is in line with the use of the present invention. The delay adjustment range of calibration delayer 6.1 ...
Embodiment 2
[0087] Such as Figure 6 As shown, without connecting the synchronous delayers 7.1, 7.2, 7.3, 7.4 first, the 14 pulses of the mode-locked laser pass through the beam splitter 5 and enter the calibration delayers 6.1, 6.2, 6.3, 6.4, calibration delayers 6.1, 6.2, 6.3, 6.4 Connect the beam combiner 1, the ultra-short laser beams pass through the polarizer 2 and then enter the spectrometer 3. The data accuracy is 0.13nm, and the number of points after expansion is 2 18 . Control the calibration delays 6.1, 6.2, 6.3, 6.4 and adjust the delays from small to large, and the delay difference between the calibration delay 6.1 and the calibration delay 6.4 is greater than that of the calibration delay 6.1 and the calibration delay 6.3 Twice of the delay difference; the spectrometer 3 image data is imported into PC4, and the data is processed as in step 2, the result is as shown in Figure 7 (a), the delay between calibration delayer 6.1 and calibration delayer 6.2,6.3,6.4 The time dif...
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