Experimental Setup
The expanded laser beam reaches the Diffractive grating (G) first, the first-order reflection is deflected to the Mirror (M) and then to the Curved Mirror (CM). The Curved Mirror reflects the laser to the Spatial Light Modulator (SLM). The phases are applied through the Spatial Light Modulator to each component of the frequency. The laser is then retro-reflected. By using a nonlinear medium, the nonlinear (SHG, THG, etc.) spectra vs. the phase scan can be recorded as a MIIPS trace for the characterization of the pulse. Once the pulse is characterized, a compensatory phase can be applied to the ultrashort pulse through the SLM.
Read more about this topic: Multiphoton Intrapulse Interference Phase Scan
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