For more info, please go to A. P. E. website
Step 1. Alignment Mode: Open the LX Spider software on the Laptop. You should see two green lights on "spectrometer found" and "motors initialized" in the upper right corner (Fig. 1). Then click the alignment button to set LX Spider in alignment mode. The incoming beam passes through a series of optics to reach the splitting mirror. This splits the beam spatially into two separate beings. These beams are then tilted downward to pass through the non-linear crystal. In alignment mode, a steering mirror reflects both beams into the alignment window (Fig.2). On the alignment window, you can check the two half-moons of equal size and brightness one on each side of the crosshair (Fig. 3). When that’s complete, clamp LX Spider to the table. As a final step optimize the two spots in the alignment window by aligning the near mirror. When you’re finished unclick the alignment button. This will switch LX Spider out of alignment mode. So it will deliver the two upconverted beams to the spectrometer.
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| Figure 1. open Spider software, make sure the green lights on | Figure 2. click "alignment mode" | Figure 3. two half beams on the alignment window |
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Step 2, Spectrum measurement: Finally make sure the input aperture of LX Spider is fully open. You also need to ensure the beam is correctly pre-aligned. It should run at a constant height above the table – equal to the height of the input aperture. An additional alignment aperture can help you do this.After alignment is complete. LX Spider automatically moves the alignment mirror out of the way. This allows the two beams to strike the focusing mirror. Then merge the entrance of the spectrometer for sensitive phase measurement.check the measure spectrum box, then use the exposure slider on the left to increase or decrease the signal level (Fig 4), or press the auto-exposure button(Fig. 5). When you’re ready press the safe spectrum button followed by"Yes" (Fig. 6). Then uncheck the measure spectrum box. And the interferogram of the fundamental signal should be visible.
| Figure 4. check measure spectrum adjust signal level manually | Figure 5. or press auto-exposure | Figure 6. save spectrum uncheck measure spectrum |
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Step 3, Phase measurement: First make sure that auto exposure mode is switched off to start set the spectral range to second harmonic. Then tune the crystal to the correct wavelength by checking the tune to center of gravity box as an alternative. You can manually enter the center wavelength and press the tune button. Be sure to reset the exposure time if needed. If you need to further optimize the signal you can adjust the focus mirror by using the hex key provided with your LX spider.
- Pulse spectrum
- Pulse spectral phase
- Instant analysis of spectral phase
- instant evaluation of temporal pulse shape
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