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  • License: Freeware
  • Last update: 5 years ago
  • Total downloads: 361
  • Price: Free |
  • Operating system: Linux, Mac OS X, Win All, BSD, Solaris
  • Publisher: Steven Byrnes
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scripts default iconFrequency-resolved optical gating (FROG) (Scripts) Publisher's description

I started with Adam Wyatt's FROG program (on this website) but added to it and edited it beyond recognition.

I started with Adam Wyatt's FROG program (on this website) but added to it and edited it beyond recognition. I did, however, subtract one useful feature: This program, as written, is SHG-FROG and GRENOUILLE only!! (Adam Wyatt's program was more general.)

--> The program "prepFROG" takes a raw image from the CCD, smooths it, subtracts the background, and re-samples it to be ready for the FROG algorithm. Also helpful is the "mirror" program: Since SHG-FROG images are mirror-symmetric, this program can copy one half of the image onto the other half in case one half was cropped or corrupted.

--> The program "svdFROG" runs the "power method" (SVD-based) FROG algorithm, reconstructing a pulse from a FROG trace. (Uses subprograms "guesspulse" and "makeFROG".) Actually has many different choices for algorithms, which is useful for complex pulses that do not necessarily converge the first try: You can perform singular-value decomposition in either the time-domain or frequency-domain (or switch back and forth), and there are anti-aliasing options to avoid having to use an excessive number of datapoints (which slows down the algorithm). (If you don't need these fancy features, just ignore them. The program will run the "standard" power-method FROG algorithm by default.)

System Requirements:

No special requirements.
Program Release Status: New Release
Program Install Support: Install and Uninstall

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