What is the equation for calculating crystal length using index of refraction?

AI Thread Summary
To calculate the length of a crystal based on the index of refraction and pulse broadening, the relevant equation involves the relationship between pulse duration, crystal length, and the index of refraction. In this case, a 100 fs pulse becomes 200 ps after passing through a CaF2 crystal with an index of refraction of 1.4419 at 400 nm. The discussion highlights the importance of considering dispersion in the calculation, as it affects how the pulse spreads within the crystal. Participants are encouraged to provide the specific equation needed for this calculation. Understanding these parameters is crucial for accurate crystal length determination.
Leggit9
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Hey,

The question sounds like this: I have 100 fs 400 nm pulse passing through the CaF2 crystal. After passing, it gets twice wider (200 ps). What is the length of the crystal?

Can anyone share the equation which would help me to calculate this?

Thank you in advance!
 
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The dispersion?
 
DrDu said:
The dispersion?

n = 1.4419 @ 400nm
 
That's the index of refraction, not it's dispersion.
 
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